Herbarium LE - Specimens

Convallariaceae

Peliosanthes sp.

Bac Kan Province, Ba Be District, Ba Be National Park. Primary and old secondary evergreen broad-leaved forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone around point 22º27’26’’N 105º36’12’E at elev. of 600-800 m a.s.l. Terrestrial herb in shady rocky place. Locally common.

30 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2385.

All photos © - L. Averyanov

Convallariaceae

Ophiopogon pingbienensis F.T.Wang & L.K.Dai?

Bac Kan Province, Ba Be District, Ba Be National Park. Primary and old secondary evergreen broad-leaved forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone around point 22º27’26’’N 105º36’12’E at elev. of 600-800 m a.s.l. Terrestrial herb in shady rocky place. Locally common.

30 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2384.

All photos © - L. Averyanov

Gesneriaceae

Paraboea sp.

Bac Kan Province, Ba Be District, Ba Be National Park. Primary and old secondary evergreen broad-leaved forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone around point 22º27’26’’N 105º36’12’E at elev. of 600-800 m a.s.l. Erect lithophytic herb to 20 cm tall on vertical shady mossy cliff. Not rare.

30 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2383.

All photos © - L. Averyanov

Orchidaceae

Malaxis acuminata D.Don

Bac Kan Province, Ba Be District, Ba Be National Park. Primary and old secondary evergreen broad-leaved forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone around point 22º27’26’’N 105º36’12’E at elev. of 600-800 m a.s.l. Lithophytic clustering herb on vertical shady mossy cliff. Not rare.

30 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2382.

All photos © - L. Averyanov

Orchidaceae

Oberonia sp.

Bac Kan Province, Ba Be District, Ba Be National Park. Primary and old secondary evergreen broad-leaved forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone around point 22º27’26’’N 105º36’12’E at elev. of 600-800 m a.s.l. Epiphytic clustering herb on tall trees. Occasional.

30 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2381.

All photos © - L. Averyanov

Orchidaceae

Liparis viridiflora (Blume) Lindl.

Bac Kan Province, Ba Be District, Ba Be National Park. Primary and old secondary evergreen broad-leaved forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone around point 22º27’26’’N 105º36’12’E at elev. of 600-800 m a.s.l. Lithophytic and epiphytic clustering herb on vertical shady mossy cliff. Not rare.

30 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2380.

All photos © - L. Averyanov

Orchidaceae

Bulbophyllum macraei (Lindl.) Rchb.f.⁣

Bac Kan Province, Ba Be District, Ba Be National Park. Primary and old secondary evergreen broad-leaved forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone around point 22º27’26’’N 105º36’12’E at elev. of 600-800 m a.s.l. Lithophytic and epiphytic creeping herb on vertical shady mossy cliff. Locally abundant.

30 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2379.

All photos © - L. Averyanov

Urticaceae

Procris sp.

Bac Kan Province, Ba Be District, Ba Be National Park. Primary and old secondary evergreen broad-leaved forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone around point 22º27’26’’N 105º36’12’E at elev. of 600-800 m a.s.l. Lithophytic herb with pendulous shoots to 0.4 m long on vertical shady mossy cliff. Not common.

30 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2378.

All photos © - L. Averyanov

Rubiaceae

Ophiorrhiza sp.

Bac Kan Province, Ba Be District, Ba Be National Park. Primary and old secondary evergreen broad-leaved forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone around point 22º27’26’’N 105º36’12’E at elev. of 600-800 m a.s.l. Terrestrial and lithophytic herb to 0.4 m tall on exposed wet rocks. Flower buds white, leaves dirty violet below. Not common.

30 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2377.

All photos © - L. Averyanov

Gesneriaceae

Ornithoboea sp.

Bac Kan Province, Ba Be District, Ba Be National Park. Primary and old secondary evergreen broad-leaved forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone around point 22º27’26’’N 105º36’12’E at elev. of 600-800 m a.s.l. Terrestrial and lithophytic herb to 0.5 m tall on exposed rocks in cliff crevices. Locally common.

30 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2376.

All photos © - L. Averyanov

Cardiopteridaceae

Cardiopteris quinqueloba (Hassk.) Hassk.

Bac Kan Province, Ba Be District, Ba Be National Park. Primary and old secondary evergreen broad-leaved forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone around point 22º27’26’’N 105º36’12’E at elev. of 600-800 m a.s.l. Herbaceous vine 3-4 m long with milky juice in open rocky place. Not common.

30 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2375.

All photos © - L. Averyanov

Orchidaceae

Habenaria ciliolaris Kraenzl.

Bac Kan Province, Ba Be District, Ba Be National Park. Primary and old secondary evergreen broad-leaved forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone around point 22º27’26’’N 105º36’12’E at elev. of 600-800 m a.s.l. Terrestrial tuberiferous herb to 1 m tall in shady rocky place. Locally common.

30 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2374.

All photos © - L. Averyanov

Orchidaceae

Phaius tonkinensis (Aver.) Aver.

Bac Kan Province, Ba Be District, Ba Be National Park. Primary and old secondary evergreen broad-leaved forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone around point 22º27’26’’N 105º36’12’E at elev. of 600-800 m a.s.l. Terrestrial herb to 1.5 m tall in shady rocky place. Tepals white, lip purplish. Rare.

30 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2373.

All photos © - L. Averyanov

Convallariaceae

Polygonatum sp.

Bac Kan Province, Ba Be District, Ba Be National Park. Primary and old secondary evergreen broad-leaved forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone around point 22º27’26’’N 105º36’12’E at elev. of 600-800 m a.s.l. Terrestrial and lithophytic herb to 1 m tall in shady rocky place. Not ripe fruits green. Not common.

30 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2372.

All photos © - L. Averyanov

Primulaceae

Lysimachia insignis Hemsl.

Bac Kan Province, Ba Be District, Ba Be National Park. Primary and old secondary evergreen broad-leaved forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone around point 22º27’26’’N 105º36’12’E at elev. of 600-800 m a.s.l. Terrestrial herb to 1 m tall in shady rocky place. Fruits white, juicy. Not common.

30 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2371.

All photos © - L. Averyanov

Adiantaceae

Adiantum caudatum L.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 250 m a.s.l. Lithophytic herb on exposed rocks. Very common.

29 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2401.

All photos © - L. Averyanov

Convallariaceae

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

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’05’’N 105º37’51’E at elev. of about 200 m a.s.l. Terrestrial herb with thick underground rhizome on very steep rocky shady slope below cave. Rare, small alone population.

29 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2370.

All photos © - L. Averyanov

Rubiaceae

Ridsdalea backanensis C.H. Nguyen & Aver.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 250 m a.s.l. Tree about 10 m tall on very steep rocky slope. Not common.

29 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2369.

All photos © - L. Averyanov

Rubiaceae

Mycetia sp.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 250 m a.s.l. Undershrub to 1.5 m tall on steep shady slope. Flowers yellow. Not rare.

29 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2368.

All photos © - L. Averyanov

Rhamnaceae

Luvunga scandens (Roxb.) Wight

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 250 m a.s.l. Woody vine or climbing shrub to 3 m tall on steep open slope. Occasional.

29 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2367.

All photos © - L. Averyanov

Convallariaceae

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

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 250 m a.s.l. Terrestrial creeping herb in shady rocky place. Not common.

29 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2366.

All photos © - L. Averyanov

Gesneriaceae

Paraboea sp.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 250 m a.s.l. Lithophytic herb on vertical shady cliff. Locally common.

29 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2365.

All photos © - L. Averyanov

Rutaceae

Euodia sp.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 250 m a.s.l. Small tree 3-4 m tall on steep open slope. Common.

29 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2364.

All photos © - L. Averyanov

Convallariaceae

Peliosanthes sinica F.T.Wang & Tang

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 250 m a.s.l. Semi-woody vine about 10 m long in open steep slope. Ripe fruits black, juicy. Very common.

29 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2363.

All photos © - L. Averyanov

Vitaceae

Tetrastigma sp.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 250 m a.s.l. Semi-woody vine about 10 m long in open steep slope. Ripe fruits black, juicy. Very commob.

29 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2362.

All photos © - L. Averyanov

Dioscoreaceae

Dioscorea sp.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 250 m a.s.l. Semi-woody vine about 10 m long in open steep slope. Flowers orange. Not common.

29 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2361.

All photos © - L. Averyanov

Myrsinaceae

Embelia ribes Burm.f.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 250 m a.s.l. Treelet to 4 m tall with pendulous branches on vertical cliff. Fruits red, later white, juicy. Not rare.

29 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2360.

All photos © - L. Averyanov

Polypodoaceae

Tectaria sp.?

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 250 m a.s.l. Lithophytic fern on vertical exposed rocks. Common.

29 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2359.

All photos © - L. Averyanov

Selaginellaceae

Selaginella sp.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 250 m a.s.l. Lithophytic herb on vertical shady rocks. Leaves dull brown. Not common.

29 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2358.

All photos © - L. Averyanov

Fabaceae

Flemmingia sp.?

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on very steep rocky slopes composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 250 m a.s.l. Undershrub to 0.5 m tall on shady grassy roadcut. Flowers white. Not rare.

29 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2357.

All photos © - L. Averyanov

Gesneriacreae

Microchirita aratriformis (D.Wood) A.Weber & D.J.Middleton

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on cliffs composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 250 m a.s.l. Lithophytic herb on shady vertical cliff. Flowers blue. Not rare.

21 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2356.

All photos © - L. Averyanov

Polypodiaceae s.l.

Tectaria sp.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on cliffs composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 160 m a.s.l. Terrestrial fern with fronds to 0. 6 m tall on steep shady slope among rocks. Locally very common.

21 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2354.

All photos © - L. Averyanov

Adiantaceae

Adiantum caudatum L.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on cliffs composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 160 m a.s.l. Terrestrial fern on steep shady slope among rocks. Locally common.

21 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2353.

All photos © - L. Averyanov

Urticaceae

Laportea interrupta (L.) Chew

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on cliffs composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 160 m a.s.l. Erect lithophytic herb to 1.5 m tall on shady rocks. Common.

21 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2352.

All photos © - L. Averyanov

Lamiaceae

Plectranthus sp.?

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on cliffs composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 160 m a.s.l. Erect lithophytic herb to 1.5 m tall on exposed rocks. Flowers blue violet. Common on hill tops.

21 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2351.

All photos © - L. Averyanov

Polypodiaceae s.l.

Asplenium prolongatum Hook.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on cliffs composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 160 m a.s.l. Lithophytic fern on shady cliff. Not common.

21 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2350.

All photos © - L. Averyanov

Balsaminaceae

Impatiens lobulifera S.X.Yu, Y.L.Chen & H.N.Qin

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on cliffs composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 160 m a.s.l. Erect lithophytic herb to 0.5 m tall on exposed rocks. Flowers yellow. Locally very common.

21 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2349.

All photos © - L. Averyanov

Polypodiaceae s.l.

Microsorum sp.?

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on cliffs composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 160 m a.s.l. Lithophytic creeping fern with fronds to 0.8 m long on exposed steep cliff. Not rare.

21 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2348.

All photos © - L. Averyanov

Polypodiaceae s.l.

Microsorum sp.?

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on cliffs composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 160 m a.s.l. Lithophytic creeping fern with fronds to 1.2 m long on exposed steep cliff. Not rare.

21 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2347.

All photos © - L. Averyanov

Orchidaceae

Habenaria ciliolaris Kraenzl.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on cliffs composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 160 m a.s.l. Terrestrial and lithophytic tuberiferous herb in shady place. Flowers light greenish. Not common.

21 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2346.

All photos © - L. Averyanov

Meliaceae

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on cliffs composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 160 m a.s.l. Tree about 15 m tall in closed secondary forest on steep rocky slope. Not common.

21 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2345.

All photos © - L. Averyanov

Orchidaceae

Pelatantheria insectifera (Rchb.f.) Ridl.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on cliffs composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 160 m a.s.l. Lithophytic herb vertical exposed cliff. Locally very common.

21 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2344.

All photos © - L. Averyanov

Orchidaceae

Acampe rigida (Sm.) P.F.Hunt

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on cliffs composed by white crystalline marble-like highly eroded limestone along lake shore on point 22º24’58’’N 105º36’48’E at elev. of about 160 m a.s.l. Lithophytic undershrub with ascending shoots on vertical exposed cliff. Not rare.

21 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2343.

All photos © - L. Averyanov