Справочные данные LE - Этикетки Аверьянова Л. В.

FLORA OF VIETNAM
Urticaceae
Elatostema myrtillus (H. Lév.) Hand.-Mazz.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Lithophytic herb to 1 m tall on mossy rocks. Flowers dull greenish. Common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 742 (HN, LE01050138, LE01050143).

FLORA OF VIETNAM
Araceae
Arisaema lidaense J. Murata & S.K. Wu

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Terrestrial herb on shady rocky slope. Scape and petiole uniform light green to pinkish. Spathe light green. Not rare. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 741 (HN, LE01050098).

FLORA OF VIETNAM
Piperaceae
Peperomia tetraphylla Hook. & Arn.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Epiphyte on mossy tree. Not common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 740 (HN, LE01050182).

FLORA OF VIETNAM
Polypodiaceae s.l. (Thelypteridaceae)
Cyclosorus erubescens (Wall. ex Hook.) C.M. Kuo

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Terrestrial fern with fronds to 1.5 m long in shady flattened place. Common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 739 (HN, LE01050142).

FLORA OF VIETNAM
Apocynaceae
Marsdenia sp.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Semi-woody vine 8-10 m long in open rocky slope. Flowers pale yellow. Not common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 738 (HN, LE01050103). Det.: M. Rodda 11.10.2019.

FLORA OF VIETNAM
Gesneriaceae
Didymocarpus sp. 2

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Lithophytic herb on shady mossy cliff. Not common. Terrestrial herb in shady slope. Common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 737 (HN, LE01050102).

FLORA OF VIETNAM
Polypodiaceae s.l. Dryopteridaceae
Dryopteris herbacea Alderw.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Terrestrial fern in shady flattened place. Common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 736 (HN, LE01050177).

FLORA OF VIETNAM
Polypodiaceae
Leptochilus ellipticus (Thunb.) Noot.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Creeping lithophyte on mossy rocks. Common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 735 (HN, LE01050137).

FLORA OF VIETNAM
Orchidaceae
Liparis viridiflora (Blume) Lindl.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Clustering epiphyte and lithophyte. Not common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 734 (HN, LE01054198).

FLORA OF VIETNAM
Polypodiaceae s.str.
Polypodiodes amoena (Wall. ex Mett.) Ching

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Creeping epiphyte on mossy tree. Common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 733 (HN, LE01050097).

FLORA OF VIETNAM
Araceae
Amorphophallus tonkinensis Engl. & Gehrm.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Terrestrial tuberiferous herb among shady rocks. Scape pale brownish with whitish spots, spathe olive-green, white spotted. Not common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 732 (HN, LE01050181).

FLORA OF VIETNAM
Urticaceae
Elatostema petelotii Gagnep.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Terrestrial and lithophytic herb in open mossy ground. Flowers greenish. Not rare. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 731 (HN, LE01050141).

FLORA OF VIETNAM
Polypodiaceae s.l. Dryopteridaceae
Peranema aspidioides (Blume) Mett.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Terrestrial fern in shady flattened place. Common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 730 (HN, LE01050101).

FLORA OF VIETNAM
Moraceae
Ficus variegata Bl. var. variegata

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Caulifloric tree 6-8 m tall in open place. Syconia dirty purple, white spotted. Occasional. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 729 (HN, LE01050172).

FLORA OF VIETNAM
Polypodiaceae s.l. Dryopteridaceae
Peranema aspidioides (Blume) Mett.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Terrestrial fern in shady flattened place. Common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 728 (HN, LE01050132).

FLORA OF VIETNAM
Polypodiaceae s.l.
Alsophila sp.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Woody fern to 10 m tall and fronds to 4 m long on steep rocky slope. Very common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 727 (HN, LE01050092).

FLORA OF VIETNAM
Polypodiaceae s.l.
Cornopteris opaca D. Don

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Terrestrial fern in open flattened place. Common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 726 (HN, LE01050176).

FLORA OF VIETNAM
Vitaceae
Tetrastigma macrocorymbum Gagnep. ex J.Wen & Boggan & Turland

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Herbaceous vine 4-6 m long in open place, flowers greenish. Common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 725 (HN, LE01050136).

FLORA OF VIETNAM
Polypodiaceae s.l.
Sphaeropteris brunoniana (Hook.) R.M. Tryon

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Woody fern to 6 m tall with fronds 3-4 m long on steep rocky slope. Very common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 724 (HN, LE01050096).

FLORA OF VIETNAM
Oleaceae
Jasminum scandens (Retz.) Vahl?

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Scandent shrub to 2.5 m tall in open place. Flowers white. Common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 723 (HN, LE01050171).

FLORA OF VIETNAM
Polypodiaceae s.l.
Davallia solida (G. Forst.) Sw.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Creeping epiphyte on mossy tree. Common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 722 (HN, LE01050131).

FLORA OF VIETNAM
Polypodiaceae s.l. Tectariaceae
Tectaria yunnanensis (Bak.) Ching

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Terrestrial fern with fronds to 1.5 m long in shady flattened place. Common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 721 (HN, LE01050091).

FLORA OF VIETNAM
Orchidaceae
Eria boniana (Gagnep.) Tang & F.T. Wang

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Creeping epiphyte and lithophyte in shady places. Not common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 720 (HN, LE01054197).

FLORA OF VIETNAM
Polypodiaceae s.l. Dryopteridaceae
Dryopteris hasseltii (Blume) C.Chr.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Terrestrial fern on shady flattened place. Common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 719 (HN, LE01050175).

FLORA OF VIETNAM
Styracaceae
Rehderodendron macrocarpum Hu

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Deciduous tree to 25 m tall. Flowers white. Not rare. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 718 (HN, LE01050135).

FLORA OF VIETNAM
Piperaceae
Peperomia parcicilia C.DC.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Epiphyte on mossy tree. Not common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 717 (HN, LE01050095).

FLORA OF VIETNAM
Polypodiaceae s.l.
Asplenium unilaterale Lam.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Lithophytic fern on moss rocks. Common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 716 (HN, LE01050170).

FLORA OF VIETNAM
Polypodiaceae s.strl.
Microsorum carinatum (W.M.Chu & Z.R.He) S.G.Lu

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Lithophytic fern on moss rocks. Common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 715 (HN, LE01050130).

FLORA OF VIETNAM
Polypodiaceae s.l.
Asplenium scortechinii Bedd.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Lithophytic fern on shady vertical cliff. Common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 714 (HN, LE01050090).

FLORA OF VIETNAM
Urticaceae
Elatostema retrohirtum Dunn

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Lithophytic herb on wet mossy rocks. Flowers white. Occasional. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 713 (HN, LE01050174).

FLORA OF VIETNAM
Orchidaceae
Cremastra appendiculata (D.Don) Makino

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Terrestrial and lithophyte tuberiferous herb in wet mossy place. Rare. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 712b. Flowered in 23 March 2020, tepals light brown-pinkish, lip white with purple ape[ and white median kallus, column and anther white. Photos, L. Averyanov VR 712b.1 (LE 01073037).

FLORA OF VIETNAM
Orchidaceae
Liparis robustior Aver., sp. nov. Epitype

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Clustering epiphyte on mossy tree (an occasionally lithophyte). Rare. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 712a. Flowered in 20 September 2019, Photos, L. Averyanov VR 712a.1. (LE01058798).

FLORA OF VIETNAM
Orchidaceae
Liparis robustior Aver., sp. nov.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Clustering epiphyte on mossy tree (an occasionally lithophyte). Rare. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 712a (holotype – LE01048903). Flowered in 15 November 2018. Flowers uniform olive-green to olive-brown, column white or light greenish with yellow apex, anther green, ovary/pedicel and floral bract grassy green. L. Averyanov.

FLORA OF VIETNAM
Orchidaceae
Bulbophyllum penicillium E.C. Parish & Rchb.f.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Creeping epiphyte on mossy tree. Flowers brownish. Rare. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 712 (HN, LE01054196).

FLORA OF VIETNAM
Polypodiaceae s.l.
Dryopteris sp. 2

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Terrestrial fern in shady flattened place. Common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 711 (HN, LE01050134).

FLORA OF VIETNAM
Cephalotaxaceae
Cephalotaxus mannii Hook.f.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Treelet 2 m tall on shady rocky slope. Rare. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 710 (HN, LE01050094, LE01050169).

FLORA OF VIETNAM
Taxaceae
Amentotaxus yunnanensis H.L. Li

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Tree 12-14 m tall on very steep rocky slope. Occasional. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 709 (HN, LE01050129).

FLORA OF VIETNAM
Polypodiaceae s.l. Dryopteridaceae
Cyrtomium hemionitis Christ

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Lithophytic fern on shady mossy cliff. Common. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 708 (HN, LE01050089).

FLORA OF VIETNAM
Polypodiaceae
Polypodium bourretti C. Chr. & Tardieu?

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Creeping epiphyte on mossy tree. Not rare. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 707 (HN, LE01050173).

FLORA OF VIETNAM
Orchidaceae
Bulbophyllum arcuatilabium Aver.?

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, steep rocky slopes of stream valley composed with eroded stratified highly eroded limestone at elevation 1000-1200 m a.s.l. Primary evergreen broad-leaved very humid forest. Miniature epiphyte on mossy tree. Not rare. 23 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 706a (HN, LE01054195).

FLORA OF VIETNAM
Polypodiaceae s.l. (Dryopteridaceae)
Bolbitis deltigera (Bedd.) C.Chr.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ41.5ʺN 104°50ʹ41.6ʺE, steep rocky slopes near mountain top composed with eroded stratified highly eroded limestone at elevation 1200-1400 m a.s.l. Primary evergreen broad-leaved very humid forest. Creeping lithophyte on mossy rocks. Rare. 22 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 706 (HN, LE01050133).

FLORA OF VIETNAM
Annonaceae
Miliusa sinensis Finet & Gagnep.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ41.5ʺN 104°50ʹ41.6ʺE, steep rocky slopes near mountain top composed with eroded stratified highly eroded limestone at elevation 1200-1400 m a.s.l. Primary evergreen broad-leaved very humid forest. Treelet 3-5 m tall on steep rocky slope. Flowers dull brown-reddish. Not rare. 22 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 705 (HN, LE01050093).

FLORA OF VIETNAM
Polypodiaceae s.l.
Asplenium prolongatum Hook.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ41.5ʺN 104°50ʹ41.6ʺE, steep rocky slopes near mountain top composed with eroded stratified highly eroded limestone at elevation 1200-1400 m a.s.l. Primary evergreen broad-leaved very humid forest. Epiphyte on mossy tree in shady place. Very common. 22 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 704 (HN, LE01050164).

FLORA OF VIETNAM
Moraceae
Ficus laevỉs Bl. var. laevis

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ41.5ʺN 104°50ʹ41.6ʺE, steep rocky slopes near mountain top composed with eroded stratified highly eroded limestone at elevation 1200-1400 m a.s.l. Primary evergreen broad-leaved very humid forest. Woody creeping vine to 10 (or more) m long. Syconia dark green. Not common. 22 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 703 (HN, LE01050124).

FLORA OF VIETNAM
Orchidaceae
Tropidia angulosa Blume

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ41.5ʺN 104°50ʹ41.6ʺE, steep rocky slopes near mountain top composed with eroded stratified highly eroded limestone at elevation 1200-1400 m a.s.l. Primary evergreen broad-leaved very humid forest. Terrestrial herb among shady rocks. Not common. 22 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 702 (HN, LE01054194).

FLORA OF VIETNAM
Annonaceae
Uvaria grandisepala Aver., sp. nov.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ41.5ʺN 104°50ʹ41.6ʺE, steep rocky slopes near mountain top composed with eroded stratified highly eroded limestone at elevation 1200-1400 m a.s.l. Primary evergreen broad-leaved very humid forest. Tree about 12 m tall on rocky slope. Flowers light green. Not common. 22 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 701 (holotype – LE01050168, isotypes – HN, LE LE01050084).
New species may be close to U. boniana Finet & Gagnep. and U. tonkinensis Finet & Gagnep. but differs in cuneate leaf base (vs. leaf base rounded to slightly cordate), large sepals 1–1.5 cm long (vs. sepals 3–4 mm long) and large subsimilar green petals 3–4 cm long (vs. sepals purple, 1.5–1.9 cm long, inner petal distinstly smaller than outher).

FLORA OF VIETNAM
Orchidaceae
Holcoglossum wangii Christenson

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ41.5ʺN 104°50ʹ41.6ʺE, steep rocky slopes near mountain top composed with eroded stratified highly eroded limestone at elevation 1200-1400 m a.s.l. Primary evergreen broad-leaved very humid forest. Epiphyte on tall mossy tree. Rare. 22 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 700 (HN, LE01054193).

FLORA OF VIETNAM
Convallariaceae
Ophiopogon chingii F.T. Wang & Tang

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ41.5ʺN 104°50ʹ41.6ʺE, steep rocky slopes near mountain top composed with eroded stratified highly eroded limestone at elevation 1200-1400 m a.s.l. Primary evergreen broad-leaved very humid forest. Terrestrial herb to 0.5 m tall on shady rocky slope. Common. 22 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 699 (HN, LE01049701).

FLORA OF VIETNAM
Lycopodiaceae
Phlegmariurus hamiltonii (Spreng.) Á.Löve & D.Löve

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ41.5ʺN 104°50ʹ41.6ʺE, steep rocky slopes near mountain top composed with eroded stratified highly eroded limestone at elevation 1200-1400 m a.s.l. Primary evergreen broad-leaved very humid forest. Epiphyte on mossy tall tree. Occasional. 22 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 698 (HN, LE01049661).

FLORA OF VIETNAM
Orchidaceae
Liparis sootenzanensis Fukuy.?

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ41.5ʺN 104°50ʹ41.6ʺE, steep rocky slopes near mountain top composed with eroded stratified highly eroded limestone at elevation 1200-1400 m a.s.l. Primary evergreen broad-leaved very humid forest. Terrestrial herb among shady mossy rocks. Sepals and petals dull brown-purplish, lip pure light yellow-green. Rare. 22 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 697 (HN, LE01054192).