Справочные данные LE - Этикетки Аверьянова Л. В.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Apocynaceae
Rauvolfia sp. ?

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Small treelet or shrub with succulent, swelling stems among open rocks on mountain top. Occasional.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 938.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Fabaceae (Caesalpiniaceae)
Bauhinia acuminata L.

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Woody vine to 15 m long among open rocks on mountain top. Common.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 937.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Euphorbiaceae
Phyllanthus mirabilis Müll.Arg.

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Treelet 2-3 m tall among open rocks on mountain top. Common.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 936.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Apocynaceae
Wrightia laevis Hook.f.

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Treelet 4-6 m tall o among open rocks on mountain top. Flowers yellow. Occasional.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 935.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Euphorbiaceae
Phyllanthus mirabilis Müll.Arg.

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Tuberiferous or caudex undershrub to 1 m tall among open rocks on mountain top. Leaves dark green with pink nerves above, dull pink below. Not common.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 934.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Apocynaceae ??

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Tree 10 m tall on rocky mountain top. Very common. Usual co-dominant of dwarf forest on rocky mountain tops.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 933.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Rubiaceae
Gardenia coronaria Buch.-Ham.

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Tree 8-10 m tall on shady rocky slope. Flowers yellow-orange. Not common.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 932.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Polypodiaceae s.l. (Pteridaceae)
Adiantum flabellulatum L.

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Terrestrial fern on shady rocky slope. Occasional.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 931.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Dendrobium lindleyi Steud.

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Epiphyte on tall trees. Occasional.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 930.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Panisea uniflora Lindl.

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Lithophytic herb on shady vertical cliff near mountain top. Flowers dull pinkish. Not rare.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 929.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Dendrobium aphyllum (Roxb.) C.E.C. Fisch. ?

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Epiphyte on tall trees. Occasional.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 928.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Rubiaceae
Catunaregam tomentosa (Blume ex DC.) Tirveng. ( = Randia dasycarpa (Kurz) Bakh.f.)

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Scandent shrub to 3 m tall in open place at hill base along river valley. Fruits green. Very common.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 927.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Sapindaceae
Harpullia cupanioides Roxb.

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Tree 5-7 m tall in open place at hill base along river valley. Fruits bright red. Not common.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 926.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Aspleniaceae
Asplenium protractum Tardieu & C.Chr. ?

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Lithophytic fern on shady rocky slope. Occasional.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 925.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Euphorbiaceae
Trigonostemon pachyphyllus Airy Shaw

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Undershrub 1.5 m tall in open place in open place at hill base. Flowers dark red-purple. Not common.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 924.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Flacourtiaceae
Hydnocarpus kurzii (King) Warb.

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Tree 10-15 m tall on rocky slope. Very common.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 923.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Arecaceae
Arenga westerhoutii Griff.

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Palm (male plant) with stem to 2 m tall and leaves 4-5(6) m long on very steep rocky slope near mountain top. Very common. Flowers pale yellow, very fragrant.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 922.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Arecaceae
Rhapis vidalii Aver., T.H. Nguyen & P.K. Loc

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Miniature palm to 1.5 tall on rocky slope. Very common.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 921.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Oberonia vesiculifera Aver., sp. nov. Paratype

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Lithophytic herb on vertical shady cliff near mountain top. Flowers dull yellow-orange. Occasional.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 920.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Convallariaceae
Peliosanthes argenteostriata Aver. & N. Tanaka

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Terrestrial herb on very steep rocky slope near mountain top. Leaves dark green with white median stripe. Common.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 919.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Tropidia curculigoides Lindl.

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Terrestrial herb to 1 m tall on very steep rocky slope near mountain top. Not rare.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 918.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Polypodiaceae s.l. (Pteridaceae)
Calciphilopteris ludens (Hook.) Yesilyurt & H. Schneid.
( = Doryopteris ludens (Hook.) J. Sm.)

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Terrestrial and lithophytic fern on very steep rocky slope near mountain top. Not rare.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 917.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Gesneriaceae
Chirita sp.

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Lithophytic herb on shady vertical cliff at middle part of mountain slope. Leaves velvety dark green to almost black with silvery-white nerves. Not common.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 916a (photo only).

FLORA OF LAOS
Hin Nam No Nature Protected Area

Cyperaceae
Scleria oblata J. Kern ?

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Terrestrial sedge on very steep rocky slope near mountain top. Common.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 916.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Arecaceae
Arenga westerhoutii Griff.

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Palm (female plant) with stem to 2 m tall and leaves 4-5(6) m long on very steep rocky slope near mountain top. Very common. Fruits dark glossy green.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 915.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Annonaceae
Mitrephora keithii Ridl. ?

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Treelet 5-6 m tall on rocky mountain top. Flowers yellowish-brown. Common.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 914.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Polypodiaceae s.l. (Pteridaceae)
Antrophyum coriaceum (D. Don) T. Moore

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Epiphyte on shady rocky slope. Not common.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 913.

FLORA OF LAOS
Hin Nam No Nature Protected Area
Orchidaceae
Kingidium deliciosum (Rchb.f.) H.R.Sweet

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Eiphyte on tall trees. Common.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 912.

Herbarium and photos prepared in 15 August 2020, tepals white finely specjled with light purple, lip light purple, L. Averyanov, T. Maisak, AL 912.3

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Habenaria ciliolaris Kraenzl.

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Lithophytic tuberiferous ephemeroid herb.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 912.2.

Flowered in cult. In 11 07 2019. Flowers light green, odorless. Averyanov L.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Bulbophyllum orientale Seidenf.

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Creeping epiphyte on tall trees. Common.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 912.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Magnoliaceae
Magnolia coco (Lour.) DC.

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Treelet 4-5 m tall on steep shady rocky slope. Flowers white. Not common.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 911.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Cheirostylis chinensis Rolfe ?

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Lithophytic herb in crevices of open rocks near mountain top. Leaves velvety green with median white stripe. Not common.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 910a.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Meliaceae
Munronia lancifolia sp. nov. ? (M. unifoliolata Oliv. & M. petelotii Merr. aff.)

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Terrestrial herb or undershrub to 0.5 m tall on steep shady rocky slope. Flowers white. Very common.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 910.

This is closest to M. unifoliolata, but different from the staminal tube (with 10 long teeth). This genus until now recorded only 4 species (2014). Ii is also closed to M. longipetiola described from Vietnam (2014) in Quang Ninh province, all other species of M. the staminal tube divided 2 o 3. This species not divided.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Convallariaceae
Peliosanthes cupuliformis sp.nov.?

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Miniature terrestrial and lithophytic herb on steep shady rocky slope. Occasional. Seeds collected only.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 909a.

Herbarium prepared from plant grown from seeds in 27.03 2020. Flowers entirely green, anthers pale yellowish to almost white. L. Averyanov, AL 909a.1 (Garden Number 18176).

FLORA OF LAOS
Hin Nam No Nature Protected Area

Convallariaceae
Peliosanthes cryptogamica sp. nov. ? (P. inaperta Aver. & N. Tanaka aff.)

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Terrestrial and lithophytic herb on steep shady rocky slope. Very common to abundant. Usual co-dominant of forest herbaceous stratum. Flowers dark green, cleistogamous (?).

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 909.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Menispermaceae
Stephania sp.

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Herbaceous vine to 2 m long in open place. Not common.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 908.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Zingiberaceae
Meistera chinensis (T.L.Wu) Škorničk. & M.F. Newman ( = Amomum chinense T.L.Wu)

Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31′02.7″N, 105°47′17.2″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l.

Terrestrial herb to 2 m talon steep shady rocky slope. Flowers white, median tepal with yellow center, finely speckled with red. Not rare.

11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 907.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Bulbophyllum rufinum Rchb.f. ?

Laos, Khammoune prov., Boualapha distr., Ban Dou village, around Khuay cave, at 17°30′35.1″N, 105°51′28.7″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 250-390 m a.s.l.

Creeping epiphyte on tall trees. Very common.

10 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 906.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Aerides falcata Lindl. & Paxton

Laos, Khammoune prov., Boualapha distr., Ban Dou village, around Khuay cave, at 17°30′35.1″N, 105°51′28.7″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 250-390 m a.s.l.

Epiphyte on tall trees. Occasional.

10 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 905.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Aspleniaceae
Asplenium polyodon G. Forst. ( = Asplenium falcatum Lam.)

Laos, Khammoune prov., Boualapha distr., Ban Dou village, around Khuay cave, at 17°30′35.1″N, 105°51′28.7″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 250-390 m a.s.l.

Lithophytic on shady rocky slope. Occasional.

10 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 904.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Sterculiaceae
Sterculia pexa Pierre ?

Laos, Khammoune prov., Boualapha distr., Ban Dou village, around Khuay cave, at 17°30′35.1″N, 105°51′28.7″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 250-390 m a.s.l.

Deciduous tree about 4 m tall among open rocks near mountain top. Fruits bright red, spiny. Occasional.

10 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 903.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Araceae
Aglaonema sp.

Laos, Khammoune prov., Boualapha distr., Ban Dou village, around Khuay cave, at 17°30′35.1″N, 105°51′28.7″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 250-390 m a.s.l.

Erect terrestrial herb to 0.5 m tall on shady rocky slope. Common.

10 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 902.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Polypodiaceae
Drynaria quercifolia (L.) J. Sm.

Laos, Khammoune prov., Boualapha distr., Ban Dou village, around Khuay cave, at 17°30′35.1″N, 105°51′28.7″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 250-390 m a.s.l.

Epiphyte and lithophyte on rocky slope near mountain top. Occasional.

10 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 901.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Irvingiaceae
Irvingia malayana A.W.Benn.

Laos, Khammoune prov., Boualapha distr., Ban Dou village, around Khuay cave, at 17°30′35.1″N, 105°51′28.7″E.

Primary dry evergreen and semideciduous broad-leaved forest on sandy alluvial terrace and slopes of river valley between karstic limestone hills at 180-220 m a.s.l.

Big tree to 30 m tall along alluvial flat river valley. Very common. Usual co-dominant of lowland gallery forest.

10 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 900.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Apocynaceae
Streptocaulon juventas (Lour.) Merr.

Laos, Khammoune prov., Boualapha distr., Ban Dou village, around Khuay cave, at 17°30′35.1″N, 105°51′28.7″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 250-390 m a.s.l.

Woody vine 6-8 m long in open place. Flowers pale yellow-green. Not common.

10 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 899.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Polypodiaceae
Pyrrosia lanceolata (L.) Farw.

Laos, Khammoune prov., Boualapha distr., Ban Dou village, around Khuay cave, at 17°30′35.1″N, 105°51′28.7″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 250-390 m a.s.l.

Creeping epiphytic and lithophytic vine on rocky slope near mountain top. Very common.

10 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 898.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Begoniaceae
Begonia khammouanensis Souvann. & Lamxay ?

Laos, Khammoune prov., Boualapha distr., Ban Dou village, around Khuay cave, at 17°30′35.1″N, 105°51′28.7″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 250-390 m a.s.l.

Lithophytic herb on shady cliff near mountain top. Leaves uniform green above, light pink below. Not rare.

10 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 897.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Cycadceae
Cycas sp.

Laos, Khammoune prov., Boualapha distr., Ban Dou village, around Khuay cave, at 17°30′35.1″N, 105°51′28.7″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 250-390 m a.s.l.

Palm-like treelet to 2 m tall on rocky slope near mountain top. Not common.

10 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 896.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Commelinaceae
Streptolirion volubile Edgew.?

Laos, Khammoune prov., Boualapha distr., Ban Dou village, around Khuay cave, at 17°30′35.1″N, 105°51′28.7″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 250-390 m a.s.l.

Terrestrial and lithophytic herb or vine on rocky mountain top. Leaves below purple-violet. Not common.

10 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 895.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Menispermaceae
Stephania japonica (Thunb.) Miers

Laos, Khammoune prov., Boualapha distr., Ban Dou village, around Khuay cave, at 17°30′35.1″N, 105°51′28.7″E.

Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 250-390 m a.s.l.

Herbaceous vine 3-4 m long in open place at the base of mountain. Common.

10 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 894.