Herbarium LE - Specimens

Convallariaceae

Polygonatum punctatum Royle?

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Primary and old secondary broad-leaved evergreen humid forest on very steep rocky slopes on solid, marble-like highly eroded limestone at elevation 900–1200 m a.s.l. on steep rocky slope.

Terrestrial and lithophytic herb to 1.2 m tall on rocky slope. Stem green, dull purple marked. Not common.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3035.

Gesneriaceae

Paraboea sp.?

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Primary and old secondary broad-leaved evergreen humid forest on very steep rocky slopes on solid, marble-like highly eroded limestone at elevation 900–1200 m a.s.l. on steep rocky slope.

Terrestrial and lithophytic herb to 1 m tall on rocky slope. Occasional.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3034.

Taccaceae

Tacca chantrieri Andre

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Primary and old secondary broad-leaved evergreen humid forest on very steep rocky slopes on solid, marble-like highly eroded limestone at elevation 900–1200 m a.s.l. on steep rocky slope.

Terrestrial rosulate herb on shady rocky slope. Flowers black. Common.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3033.

Myrsinaceae

Ardisia sp.

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Primary and old secondary broad-leaved evergreen humid forest on very steep rocky slopes on solid, marble-like highly eroded limestone at elevation 900–1200 m a.s.l. on steep rocky slope.

Terrestrial and lithophytic herb to 0.5 m tall on shady rocky slope. Flower buds pinkish. Not rare.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3032.

Rubiaceae

Ophiorrhiza sp.

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Primary and old secondary broad-leaved evergreen humid forest on very steep rocky slopes on solid, marble-like highly eroded limestone at elevation 900–1200 m a.s.l. on steep rocky slope.

Terrestrial and lithophytic herb to 0.5 m tall on shady rocky place along stream canyon. Flowers white. Not rare.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3031.

Acanthaceae

Justicia sp.

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Primary and old secondary broad-leaved evergreen humid forest on very steep rocky slopes on solid, marble-like highly eroded limestone at elevation 900–1200 m a.s.l. on steep rocky slope.

Lithophytic and terrestrial undershrub about 1 tall on open mossy, rocky mountain top. Occasional.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3030.

Ericaceae

Rhododendron sp.

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Primary and old secondary broad-leaved evergreen humid forest on very steep rocky slopes on solid, marble-like highly eroded limestone at elevation 900–1200 m a.s.l. on steep rocky slope.

Lithophytic and terrestrial shrub 1.5 tall on open mossy, rocky mountain top. Flowers white with pink tint. Occasional.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3029.

Convallariaceae

Disporum cantoniense (Lour.) Merr.

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Primary and old secondary broad-leaved evergreen humid forest on very steep rocky slopes on solid, marble-like highly eroded limestone at elevation 900–1200 m a.s.l. on steep rocky slope.

Terrestrial herb to 1 m tall in shady rocky place. Flowers dark brown purple. Occasional.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3028.

Zingiberaceae

Amomum sp.?

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Primary and old secondary broad-leaved evergreen humid forest on very steep rocky slopes on solid, marble-like highly eroded limestone at elevation 900–1200 m a.s.l. on steep rocky slope.

Terrestrial herb to 1.2 m tall in shady rocky place. Occasional.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3027.

Primulaceae

Lysimachia insignis Hemsl.?

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Primary and old secondary broad-leaved evergreen humid forest on very steep rocky slopes on solid, marble-like highly eroded limestone at elevation 900–1200 m a.s.l. on steep rocky slope.

Lithophytic and terrestrial herb to 0.6 m tall in shady rocky place. Flowers yellow. Occasional.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3026.

Anthericaceae

Chlorophytum malayense Ridl.

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Primary and old secondary broad-leaved evergreen humid forest on very steep rocky slopes on solid, marble-like highly eroded limestone at elevation 900–1200 m a.s.l. on steep rocky slope.

Lithophytic and terrestrial rosulate herb in shady place. Flowers white. Occasional.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3025.

Orobanchaceae

Christisonia siamensis Craib

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Old secondary broad-leaved evergreen humid forest on wet very steep alluvial slopes based on solid, marble-like highly eroded limestone at elevation of 600–800 m a.s.l.

Terrestrial root parasite on bamboo in rocky place near hill top. Flowers white, tepal tips violet. Very rare.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3014.

Lemnaceae

Spirodela polyrhiza (L.) Schleid

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Old secondary broad-leaved evergreen humid forest on wet very steep alluvial slopes based on solid, marble-like highly eroded limestone at elevation about 600 m a.s.l.

Floating herb in water of rice fields. Locally very common.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3013.

Lemnaceae

Spirodela polyrhiza (L.) Schleid

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Old secondary broad-leaved evergreen humid forest on wet very steep alluvial slopes based on solid, marble-like highly eroded limestone at elevation about 600 m a.s.l.

Floating herb in water of rice fields. Locally very common.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3013.

Zingiberaceae

Amomum sp.?

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Old secondary broad-leaved evergreen humid forest on wet very steep alluvial slopes based on solid, marble-like highly eroded limestone at elevation of 600–800 m a.s.l.

Erect terrestrial herb to 1.2 m tall. Flowers white. Common, but rare with flowers.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3012.

Marattiaceae

Archangiopteris tonkinensis (Hayata) Ching

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Old secondary broad-leaved evergreen humid forest on wet very steep alluvial slopes based on solid, marble-like highly eroded limestone at elevation of 600–800 m a.s.l.

Terrestrial fern with fronds to 0.6 m long on very steep wet shady alluvial slope along trail. Locally common.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3011.

Euphorbiaceae

Croton sp.

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Old secondary broad-leaved evergreen humid forest on wet very steep alluvial slopes based on solid, marble-like highly eroded limestone at elevation of 600–800 m a.s.l. Treelet or shrub to 3 m tall in shady rocky places. Flowers yellow. Very common.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3009.

Opiliaceae

Melientha suavis Pierre

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Old secondary broad-leaved evergreen humid forest on wet very steep alluvial slopes based on solid, marble-like highly eroded limestone at elevation of 600–800 m a.s.l.

Treelet about 2 m tall in shady rocky places. Flowers light yellow. Common.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3008.

Euphorbiaceae

Trigonostemon philippinensis Stapf

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Old secondary broad-leaved evergreen humid forest on wet very steep alluvial slopes based on solid, marble-like highly eroded limestone at elevation of 600–800 m a.s.l.

Tree 4-6 m tall and to 30 cm in diameter near mountain top. Flowers yellow to yellow orange. Occasional.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3005.

Convallariaceae

Peliosanthes sp.

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Old secondary broad-leaved evergreen humid forest on wet very steep alluvial slopes based on solid, marble-like highly eroded limestone at elevation of 600–800 m a.s.l.

Terrestrial herb in shady rocky places. Not rare.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3004.

Myrsinaceae

Ardisia sp.

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Old secondary broad-leaved evergreen humid forest on wet very steep alluvial slopes based on solid, marble-like highly eroded limestone at elevation of 600–800 m a.s.l.

Treelet 1.5 m tall in shady places. Flowers pink purple. Not common.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3003.

Zingiberaceae

Siliquamomum tonkinense Baill.?

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Old secondary broad-leaved evergreen humid forest on wet very steep alluvial slopes based on solid, marble-like highly eroded limestone at elevation of 600–800 m a.s.l.

Erect terrestrial herb to 1.8 m tall on wet alluvial soil in shady valley between limestone hills. Occasional.

04 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3001.

Orchidaceae

Peristylus monticola (Ridl.) Seidenf.?

Lam Dong Province, Lac Duong District, Bidoup Nui Ba National Par, southern slopes of Bidoup Mountain about 5 km to the south from Bidoup peak around point 12º04.076’N 108º38.927E. Open grassy Pinus kesiya forest and woodlands at elevation about 1900 m a.s.l. Small terrestrial tuberiferous ephemeroid herb. Not rare.

08 November 2023, L. Averyanov, Nguyen Van Canh, Truong Ba Vuong, T. Maisak, AL2494 (BD 001).

Fl. in culture 04 June 2024, flowers green, L. Averyanov, AL1651.

Orchidaceae

Tropidia curculigoides Lindl.

Bac Kan Province, Ba Be District, Cao Thuong Community, Ba Be National Park. Old secondary evergreen broad-leaved forest and scrub on very steep rocky slope composed by white crystalline marble-like highly eroded limestone above tall cliff around point 22º27’36’’N 105º39’18’E at elevation of about 300 m a.s.l. Terrestrial herb to 0.5 m tall in shady valley between limestone hills. Not common.

25 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2912.

Orchidaceae

Cypripedium lentiginosum P.J.Cribb & S.C.Chen

Northwest Vietnam, Ha Giang Province, 23 June 2023, Hoang Duc Minh, Nguyen Sinh Khang, AL2218.

Orchidaceae

Cypripedium lentiginosum P.J.Cribb & S.C.Chen

Northwest Vietnam, Ha Giang Province, 23 June 2023, Hoang Duc Minh, Nguyen Sinh Khang, AL2218.

Meliaceae

Chukrasia tabularis Wight & Arn.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on steep rocky slope composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º25’46’’N 105º36’58’E at elev. of about 200 m a.s.l. Tree to 25 m tall. Flowers yellowish green, very fragrant.

28 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2956.

Zingiberaceae

Amomum sp.?

Bac Kan Province, Ba Be District, Cao Thuong Community, Ba Be National Park. Secondary evergreen broad-leaved forest on steep rocky slope composed by white crystalline marble-like highly eroded limestone around point 22º27’36’’N 105º39’18’E at elevation of about 250 m a.s.l. Terrestrial herb to 1.5 m tall in shady slope. Flowers white, lip with yellow spot. Locally common.

26 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2916.

Convallariaceae

Aspidistra opaca Tillich

Khanh Hoa Province, Khanh Vĩnh District, eastern slopes of Chu Mu Mountains at elevation 350­450 m a.s.l. Dry secondary evergreen broad-leaved forest on very steep granite and shale slopes. Terrestrial herb with thick hypogeous rhizome on sandy slope along small rocky stream. Old flowers dark violet to almost black, stigma yellowish, fruits dirty green, spiny in apical half. Locally common. 26 February 2023, L. Averyanov, Nguyen Van Canh, AL 2159. Living plants and herbarium.

Asclepiadaceae

Hoya graveolens Kerr

Dak Lak Province, Ea’Hleo District, evergreen broad-leaved forest at elevation of about 300 m a.s.l., lithophytic vine, obtained from local collectors in 2014.

10 May 2024, Nguyen Van Canh garden, AL3139.

Solanaceae

Solanum sp.

Dak Lak Province, Lak District, around Lieng Bok Sak Waterfall at elevation about 400 m a.s.l. Dry evergreen broad-leaved forest along rocky stream on granite. Erect terrestrial herb to 1.5 m tall in open place along road. Flowers white, not ripe fruits pale green. Common.

11 May 2024, L. Averyanov, Nguyen Van Canh, T. Maisak, AL3145.

Araceae

Typhonium sp.?

Plant cultivated in Ly Ngoc Quan private garden, Lam Dong Province, Lam Ha District, Phi To Village as a weed. Photo and herbarium prepared in 11 May 2024, L. Averyanov, Nguyen Van Canh, T. Maisak, AL3153.

Gesneriaceae

Petrocodon sp.

Plant obtained from local collector in the north of VN. Cultivated in Loc Bao Sang private garden, Lam Dong Province, Di Linh District. Flowers dark blue.

Photo prepared in 12 May 2024, L. Averyanov, Nguyen Van Canh, T. Maisak, AL3159.

Gesneriaceae

Primulina sp.

Plant obtained from local collector in the north of VN. Cultivated in Loc Bao Sang private garden, Lam Dong Province, Di Linh District. Flowers large, white, outside with light purple markings.

Photo prepared in 12 May 2024, L. Averyanov, Nguyen Van Canh, T. Maisak, AL3160.

Myrsinaceae

Ardisia sp. nov.?

Plant obtained from local collector in Lam Dong Province, Di Linh District area. Cultivated in Loc Bao Sang private garden, Lam Dong Province, Di Linh District.

Herbarium and photo prepared in 12 May 2024, L. Averyanov, Nguyen Van Canh, T. Maisak, AL3165.

Convallariaceae

Aspidistra sp.

Dak Lak Province, Lak District, Krong No Municipality, around point 12.1408 N 108.1325 E. Dry evergreen broad-leaved secondary forest on hill slopes composed with granite at elevation 800–900 m a.s.l. Terrestrial herb on shady slope along rocky stream. Rare.

24 November 2022, L. Averyanov, Nguyen Van Canh, T. Maisak, Truong Ba Vuong, et al., AL 1786.

Gesneriaceae

Primulina sp.

Yen Bai Province, Luc Yen District, To Mau Municipality, Ngoi Tham Village, remnants of primary evergreen broad-leaved forest on limestone mountain at elevation 200–400 m a.s.l.03 March 2023, Nguyen Sinh Khang, AL 2205. Living plant.

Clusiaceae

Garcinia tinctoria W.Wight

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on steep rocky slope composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º25’46’’N 105º36’58’E at elev. of about 200 m a.s.l. Tree to 20 m tall. Fruits light green. Occasional.

28 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2957.

Arecaceae

Arenga caudata (Lour.) H.E.Moore

Bac Kan Province, Ba Be District, Cao Thuong Community, Ba Be National Park. Dry secondary evergreen broad-leaved forest on steep rocky slope composed by white crystalline marble-like highly eroded limestone around point 22º27’42’’N 105º34’41’E at elevation of 700–800 m a.s.l. Miniature palm to 1.5 m tall in rocky open place between remnant hills. Occasional.

27 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2953.

Polypodiaceae

Tectaria sp.

Bac Kan Province, Ba Be District, Cao Thuong Community, Ba Be National Park. Dry secondary evergreen broad-leaved forest on steep rocky slope composed by white crystalline marble-like highly eroded limestone around point 22º27’42’’N 105º34’41’E at elevation of 700–800 m a.s.l.Terrestrial fern in shady depression between limestone hills. Common.

27 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2951.

Ebenaceae

Diospyros sp.

Bac Kan Province, Ba Be District, Cao Thuong Community, Ba Be National Park. Dry secondary evergreen broad-leaved forest on steep rocky slope composed by white crystalline marble-like highly eroded limestone around point 22º27’42’’N 105º34’41’E at elevation of 700–800 m a.s.l. Tree to 15 m tall in shady depression between limestone hills. Fruits and calyx green. Not common.

27 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2950.

Icacinaceae

Iodes vitiginea Hance

Bac Kan Province, Ba Be District, Cao Thuong Community, Ba Be National Park. Dry secondary evergreen broad-leaved forest on steep rocky slope composed by white crystalline marble-like highly eroded limestone around point 22º27’42’’N 105º34’41’E at elevation of 700–800 m a.s.l. Semi-woody vine 6-7 m long in open secondary forest along fiend border. Flowers yellowish. Common.

27 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2948.

Polypodiaceae (Apleniaceae)

Asplenium nidus L.,

Bac Kan Province, Ba Be District, Cao Thuong Community, Ba Be National Park. Dry secondary evergreen broad-leaved forest on steep rocky slope composed by white crystalline marble-like highly eroded limestone around point 22º27’42’’N 105º34’41’E at elevation of 700–800 m a.s.l. Lithophytic rosulate fern along rocky ridge edge. Not rare.

27 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2945.

Convallariaceae

Aspidistra babensis K.S.Nguyen, Aver. & Tillich

Bac Kan Province, Ba Be District, Cao Thuong Community, Ba Be National Park. Dry secondary evergreen broad-leaved forest on steep rocky slope composed by white crystalline marble-like highly eroded limestone around point 22º27’42’’N 105º34’41’E at elevation of 700–800 m a.s.l. Terrestrial herb with underground rhizome, leaves very rigid, almost black. Locally abundant.

27 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2944.

Cycadaceae

Cycas brachycantha K.D.Hill, T.H.Nguyen & L.K.Phan

Bac Kan Province, Ba Be District, Cao Thuong Community, Ba Be National Park. Dry secondary evergreen broad-leaved forest on steep rocky slope composed by white crystalline marble-like highly eroded limestone around point 22º27’42’’N 105º34’41’E at elevation of 700–800 m a.s.l. Lithophytic palm-like plant with erect stem to 0.5 m tall and leaves to 2.5 m long along rocky ridge edge. Locally very common. Male specimen.

27 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2942.

Rubiaceae

Psychotria sp.?

Bac Kan Province, Ba Be District, Cao Thuong Community, Ba Be National Park. Dry secondary evergreen broad-leaved forest on steep rocky slope composed by white crystalline marble-like highly eroded limestone around point 22º27’42’’N 105º34’41’E at elevation of 700–800 m a.s.l. Undershrub 1 m tall on steep shady rocky slope. Flowers white. Not common.

27 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2936.

Lauraceae

Neocinnamomum lecomtei H. Liu

Bac Kan Province, Ba Be District, Cao Thuong Community, Ba Be National Park. Dry secondary evergreen broad-leaved forest on steep rocky slope composed by white crystalline marble-like highly eroded limestone around point 22º27’42’’N 105º34’41’E at elevation of 700–800 m a.s.l. Treelet 1.5 2 m tall on steep rocky slope. Fruits bright red. Rare.

27 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2935.

Opiliaceae

Melientha suavis Pierre

Bac Kan Province, Ba Be District, Cao Thuong Community, Ba Be National Park. Dry secondary evergreen broad-leaved forest on steep rocky slope composed by white crystalline marble-like highly eroded limestone around point 22º27’42’’N 105º34’41’E at elevation of 700–800 m a.s.l. Treelet to 10 m in rather open place. Not rare.

27 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2934.

Vitaceae

Tetrastigma leucostaphylum (Dennst.) Alston?

Bac Kan Province, Ba Be District, Cao Thuong Community, Ba Be National Park. Dry secondary evergreen broad-leaved forest on steep rocky slope composed by white crystalline marble-like highly eroded limestone around point 22º27’42’’N 105º34’41’E at elevation of 700–800 m a.s.l. Herbaceous vine to 4 m long in rather open place. Fruits bright orange red. Not rare.

27 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2933.

Pandaceae

Microdesmis caseariifolia Planch. ex Hook.

Bac Kan Province, Ba Be District, Cao Thuong Community, Ba Be National Park. Secondary evergreen broad-leaved forest on steep rocky slope composed by white crystalline marble-like highly eroded limestone around point 22º27’36’’N 105º39’18’E at elevation of about 250 m a.s.l. Shrub or small treelet in shady place. Flower buds yellow. Occasional. common.

26 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2927.