Справочные данные LE - Этикетки Аверьянова Л. В.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Theaceae
Camellia sp.

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34′13.3″N, 105°47′57.5″E.

Primary evergreen broad-leaved dry forest at elev. 300-600 m a.s.l.

Tree 6-8 m tall on rocky slope. Common.

6 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 698.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Opiliaceae
Melientha suavis Pierre

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34′13.3″N, 105°47′57.5″E.

Primary evergreen broad-leaved dry forest at elev. 300-600 m a.s.l.

Treelet 2-3 m tall on rocky slope. Common. Young leaves edible.

6 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 697.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Arecaceae
Caryota sympetala Gagnep. ?

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34′13.3″N, 105°47′57.5″E.

Primary evergreen broad-leaved dry forest at elev. 300-600 m a.s.l.

Palm with stem to 1 m tall and leaves 2-2.5 m long on shady rocky slope. Very common.

6 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 696.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Euphorbiaceae
Antidesma sp.

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34′13.3″N, 105°47′57.5″E.

Primary evergreen broad-leaved dry forest at elev. 300-600 m a.s.l.

Shrub 2-3 m tall on open rocky slope. Fruits green. Occasional.

6 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 695.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Pholidota imbricata Lindl.

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34′13.3″N, 105°47′57.5″E.

Primary evergreen broad-leaved dry forest at elev. 300-600 m a.s.l.

Lithophyte and epiphyte on open stream rocks. Occasional.

6 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 694.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Fabaceae
Gleditsia fera (Lour.) Merr.

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34′13.3″N, 105°47′57.5″E.

Primary evergreen broad-leaved dry forest at elev. 300-600 m a.s.l.

Tree 12-16 m tall with spiny stem on rocky stream slope. Not common.

6 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 693b (photo only).

FLORA OF LAOS
Hin Nam No Nature Protected Area

Euphorbiaceae
Baccaurea annamensis Gagnep. ( = B. harmandii Gagnep.)

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34′13.3″N, 105°47′57.5″E.

Primary evergreen broad-leaved dry forest at elev. 300-600 m a.s.l.

Evergreen Caulifloric tree 12-15 m tall on steep rocky stream slope. Fruits dull dirty-violet. Not common.

6 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 693a (photo only).

FLORA OF LAOS
Hin Nam No Nature Protected Area

Asclepiadaceae
Hoya fungii Merr.?

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34′13.3″N, 105°47′57.5″E.

Primary evergreen broad-leaved dry forest at elev. 300-600 m a.s.l.

Simi-woody creeping epiphytic wine to 6 m long on open stream rocks. Flowers white. Not common.

6 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 693.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Fagaceae
Quercus helferiana A.DC. ?

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34′13.3″N, 105°47′57.5″E.

Primary evergreen broad-leaved dry forest at elev. 300-600 m a.s.l.

Tree 10 (and more) m tall on shady rocky slope. Occasional.

6 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 692.

FLORA OF LAOS
Hin Nam No Nature Protected Area

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

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34′13.3″N, 105°47′57.5″E.

Primary evergreen broad-leaved dry forest at elev. 300-600 m a.s.l.

Terrestrial herb on shady rocky slope. Very common.

6 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 691.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Polypodiaceae
Loxogramme scolopendrioides (Gaudich.) C.V.Morton

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34′13.3″N, 105°47′57.5″E.

Primary evergreen broad-leaved dry forest at elev. 300-600 m a.s.l.

Lithophytic fern on shady mossy rocks. Common.

6 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 690.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Polypodiaceae s.l. (Aspleniaceae)
Asplenium prolongatum Hook. ?

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34′13.3″N, 105°47′57.5″E.

Primary evergreen broad-leaved dry forest at elev. 300-600 m a.s.l.

Lithophytic fern on shady mossy rocks. Common.

6 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 689.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Polypodiaceae s.l. (Aspleniaceae)
Hymenasplenium excisum (C.Presl) S.Linds. ( = Asplenium unilaterale Lam.)

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34′13.3″N, 105°47′57.5″E.

Primary evergreen broad-leaved dry forest at elev. 300-600 m a.s.l.

Lithophytic fern on vertical shady mossy cliff. Common.

6 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 688.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Meliaceae
Munronia lancifolia Aver. & S.K. Nguyen, sp. nov. ? (M. unifoliolata Oliv. & M. petelotii Merr. aff.)

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34′13.3″N, 105°47′57.5″E.

Primary evergreen broad-leaved dry forest at elev. 300-600 m a.s.l.

Terrestrial herb or undershrub 10-15 cm tall on open rocky slope. Flowers white. Occasional.

6 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 687.

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

Cycadaceae
Cycas pectinata Buch.-Ham.?

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Palm-like tree about 5 m (up to 10 m) tall on rocky slope near mountain top. Occasional.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 686.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Rutaceae
Melicope petrophila Aver., sp. nov.

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Shrub 1-2 m tall on mountain top. Flowers yellowish. Very common.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 685.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Gnetaceae
Gnetum latifolium Blume ?

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Large woody vine on shady slope. Common.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 684.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Polygonaceae
Persicaria pulchra (Blume) Sojak

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Terrestrial herb in open wet mossy place on mountain top. Common.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 683.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Trilliaceae
Paris polyphylla Sm.

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Terrestrial herb in shady place on mountain top. Flowers green. Not common.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 682a.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Ceratostylis siamensis Downie

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′00.3″N, 105°47′35.6″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Epiphyte on mossy tree on mountain top. Not common.

4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 682.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Rubiaceae
Argostemma laeve Benn.

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Terrestrial and lithophytic herb in wet shady place on mountain top. Flowers white, anthers yellow. Not common.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 681a.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Bulbophyllum retusiusculum Rchb.f.

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′00.3″N, 105°47′35.6″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Epiphyte on mossy tree on mountain top. Common.

4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 681.
Flowered in November 2019, L. Averyanov, AL 681.1

FLORA OF LAOS
Hin Nam No Nature Protected Area

Rosaceae
Eriobotrya capitata Aver., sp. nov. (insertae sedis)

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Treelet 3-5 m tall on mountain top. Flowers light greenish to yellowish. Common.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 680a.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Eria pusilla (Griff.) Lindl. ( = Conchidium pusillum Griff.)

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′00.3″N, 105°47′35.6″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Creeping epiphyte and lithophyte in shady place on mountain top. Common.

4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 680.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Podocarpaceae
Dacrycarpus imbricatus (Blume) de Laub.

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Tree to 20 m tall. Not common.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 679a.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Tainia penangiana Hook.f. ?

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′00.3″N, 105°47′35.6″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Terrestrial herb in shady place on mountain top. Not common.

4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 679.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Polypodiaceae s.l. (Aspleniaceae)
Asplenium normale D.Don

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Lithophyte on shady mossy cliff. Common.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 678a.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Luisia morsei Rolfe ?

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′00.3″N, 105°47′35.6″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Epiphyte on mossy tree on mountain top. Not common.

4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 678.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Pentaphylacaceae
Pentaphylax euryoides Gardner & Champ.

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Tree to 10 m tall on mountain top. Flowers white to light yellowish. Common.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 677a.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Paphiopedilum gratrixianum Rolfe

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′00.3″N, 105°47′35.6″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Lithophytic rosulate herb on vertical mossy cliffs. Leaves uniform green. Locally common, particularly at elevations 1200-1400 m.

4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 677.

Flowered in 10 Sept 2018. Median sepal white, heavily purple spotted in apical part, dark purple in basal half, lateral sepals light brown with darker nerves, lip yellow-brownish, staminode yellow and synsepalum pale yellow. Photos L. Averyanov.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Ericaceae
Rhododendron sp.

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Tree to 6 m tall on mountain top. Very common.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 676a.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Liparis caudata Aver. & K.S.Nguyen

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′00.3″N, 105°47′35.6″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Epiphyte on mossy trees on mountain top. Not common.

4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 676.

Fl. in cult in 10 October 2018. Tepals dull pale yellowish, lip light brownish. Photos. L. Averyanov.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Begoniaceae
Begonia handelii Irmsch.

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Terrestrial herb on rocky slope. Common.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 675b (photo oly).

FLORA OF LAOS
Hin Nam No Nature Protected Area

Polypodiaceae s.l. (Davalliaceae)
Davallia griffithiana Hook.

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Creeping epiphyte and lithophyte on mountain top. Common.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 675a.

FLORA OF LAOS
Hin Nam No Nature Protected Area
Orchidaceae

Uncifera dalatensis (Guillaumin) Seidenf. & Smitinand

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′00.3″N, 105°47′35.6″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Epiphyte on tall trees on mountain top. Common.

4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 675.2

Herbarium specimen prepared in 07 09 2019, L. Averyanov, T. Maisak, AL 675.2. Flowers white, apical half of all tepals purple. Photos.

Herbarium specimen and photos prepared in 08 09 2020, L. Averyanov, T. Maisak, AL 675.2. Flowers white, apical half of all tepals purple. Photos.

FLORA OF LAOS
Hin Nam No Nature Protected Area
Orchidaceae
Diploprora championii (Lindl.) Hook.f.

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′00.3″N, 105°47′35.6″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Epiphyte on tall trees on mountain top. Common.

4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 675.1

Flowered in 15.05.2019. Flowers yellow, lip white, disk concave with brownish-orande marks, column white with violet tint, anther white. L. Averyanov. Photos.

FLORA OF LAOS
Hin Nam No Nature Protected Area
Orchidaceae
Uncifera dalatensis (Guillaumin) Seidenf. & Smitinand

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′00.3″N, 105°47′35.6″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Epiphyte on tall trees on mountain top. Common.

4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 675.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Asclepiadaceae
Dischidia acuminata Costantin

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Small herbaceous creeping epiphytic vine on mountain top. Flowers white to light yellowish. Common.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 674a.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Dendrobium thyrsiflorum B.S. Williams

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′00.3″N, 105°47′35.6″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Epiphyte on tall trees on mountain top. Very common.

4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 674.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Melastomataceae
Melastoma sanguineum Sims

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Prostrate undershrub on open rocks on mountain top. Flowers pink-purple. Locally common.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 673c (photo only).

FLORA OF LAOS
Hin Nam No Nature Protected Area

Oleandraceae
Oleandra neriiformis Cav. ( = Oleandra pistillaris (Sw.) C. Chr.)

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Creeping lithophytic fern on open rocks on mountain top. Locally common.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 673b (photo only).

FLORA OF LAOS
Hin Nam No Nature Protected Area

Podocarpaceae
Podocarpus annamiensis N.E. Gray

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Tree to 10 m tall on mountain top. Rare.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 673a.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Thrixspermum calceolus (Lindl.) Rchb.f.

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′00.3″N, 105°47′35.6″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Epiphyte on tall trees on mountain top. Flowers yellowish. Not common.

4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 673.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Rhamnaceae
Frangula crenata (Siebold & Zucc.) Miq. ( = Rhamnus crenata Siebold & Zucc.)

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Shrub to 3 m tall on mountain top. Flower buds light greenish. Not common.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 672a.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Flickingeria angustifolia (Blume) A.D. Hawkes

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′00.3″N, 105°47′35.6″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Epiphyte on tall trees on mountain top. Not common.

4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 672.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Oleaceae
Chionanthus ramiflorus Roxb. ?

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Tree to 20 m tall on mountain top. Very common.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 671a.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Leeaceae
Leea indica (Burm. f.) Merr.

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Shrub about 2 m tall on mountain top. Flowers pale greenish. Occasional.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 670b (photo only).

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Pholidota articulata Lindl.

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′00.3″N, 105°47′35.6″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Epiphyte on tall trees on mountain top. Common.

4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 671.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Annonaceae
Goniothalamus macrophyllus (Blume) Hook.f. & Thomson ?

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′18.1″N, 105°47′47.5″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Shrub about 2 m tall on mountain top. Flowers dull yellowish-orange. Common.

5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 670a.

FLORA OF LAOS
Hin Nam No Nature Protected Area

Orchidaceae
Cymbidium lancifolium Hook.

Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35′00.3″N, 105°47′35.6″E.

Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l.

Terrestrial herb in shady place on mountain top. Very common.

4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 670.