Herbarium LE - Specimens

Polypodiaceae

Tectaria sp.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on steep rocky slopes composed by white crystalline marble-like highly eroded limestone near Dau Dang Waterfall of Nang River around point 22º27’09’’N 105º34’16’E at elev. of about 150 m a.s.l. Terrestrial and lithophytic fern on shady steep rocky slope. Very common.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2342.

All photos © - L. Averyanov

Rubiaceae

Randia 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 22º25’46’’N 105º36’58’E at elev. of about 170 m a.s.l. Shrub to 3 m tall in open wet place in alluvial valley between limestone hills. Fruits green. Not common.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2341.

All photos © - L. Averyanov

Orchidaceae

Eria javanica (Sw.) Blume

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 22º25’46’’N 105º36’58’E at elev. of about 170 m a.s.l. Lithophytic herb forming large clumps on very steep rocky slopes and cliffs. Flowers white. Locally common.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2340.

All photos © - L. Averyanov

Fabaceae

Mucuna 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 22º25’46’’N 105º36’58’E at elev. of about 170 m a.s.l. Herbaceous vine to 10 m long on open places. Flowers purple violet. Very common.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2339.

All photos © - L. Averyanov

Vitaceae

Tetrastigma 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 22º25’46’’N 105º36’58’E at elev. of about 170 m a.s.l. Herbaceous vine to 10 m long on open places. Ripe fruits black. Very common.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2338.

All photos © - L. Averyanov

Urticaceae

Elatostema repens (Lour.) Hallier f.

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 22º25’46’’N 105º36’58’E at elev. of about 170 m a.s.l. Creeping terrestrial and lithophytic herb in shady place among rocks. Common.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2337.

All photos © - L. Averyanov

Polypodiaceae

Pseudodrynaria 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 22º25’46’’N 105º36’58’E at elev. of about 170 m a.s.l. Creeping epiphytic and lithophytic fern with fronds to 1 m long on exposed rocks and cliffs. Very common.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2336.

All photos © - L. Averyanov

Orchidaceae

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 22º25’46’’N 105º36’58’E at elev. of about 170 m a.s.l. Terrestrial and lithophytic rosulate herb on rocky shady place. Leaves with dull white longitudinal stripes. Not rare.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2335.

All photos © - L. Averyanov

Convallariaceae

Ophiopogon regnieri Bois

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 22º25’46’’N 105º36’58’E at elev. of about 170 m a.s.l. Terrestrial and lithophytic herb on rocky shady place. Leaves grassy green with dull yellowish spots. Rare.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2334.

All photos © - L. Averyanov

Orchidaceae

Dendrobium chrysanthum Wall.

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 22º25’46’’N 105º36’58’E at elev. of about 170 m a.s.l. Lithophytic and epiphytic herb. Not common.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2333.

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 22º25’46’’N 105º36’58’E at elev. of about 170 m a.s.l. Erect lithophytic herb to 0.6 m tall on exposed and shady rocks. Flowers yellow. Locally common.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2332.

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 steep rocky slopes composed by white crystalline marble-like highly eroded limestone near Dau Dang Waterfall of Nang River around point 22º27’09’’N 105º34’16’E at elev. of about 150 m a.s.l. Tree about 8 m tall on shady steep rocky slope. Fruits broadly ellipsoid, dirty green to almost black. Locally common.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2331.

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 steep rocky slopes composed by white crystalline marble-like highly eroded limestone near Dau Dang Waterfall of Nang River around point 22º27’09’’N 105º34’16’E at elev. of about 150 m a.s.l. Tree about 5 m tall on shady steep rocky slope. Young flower buds green. Locally common.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2330.

All photos © - L. Averyanov

Vitaceae

Tetrastigma sp.?

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on steep rocky slopes composed by white crystalline marble-like highly eroded limestone near Dau Dang Waterfall of Nang River around point 22º27’09’’N 105º34’16’E at elev. of about 150 m a.s.l. Herbaceous vine 3–4 m in cliff along diver. Common.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2329.

All photos © - L. Averyanov

Rutaceae

Evodia sp.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on steep rocky slopes composed by white crystalline marble-like highly eroded limestone near Dau Dang Waterfall of Nang River around point 22º27’09’’N 105º34’16’E at elev. of about 150 m a.s.l. Small tree or shrub to 3 m tall in open place along diver. Common.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2328.

All photos © - L. Averyanov

Zingiberaceae

Globba sp.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on steep rocky slopes composed by white crystalline marble-like highly eroded limestone near Dau Dang Waterfall of Nang River around point 22º27’09’’N 105º34’16’E at elev. of about 150 m a.s.l. Terrestrial erect herb to 0.6 m tall in shady place. Old flowers yellow, seeds white. Locally common.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2327.

All photos © - L. Averyanov

Polypodoaceae s.l.

Tectaria sp.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on steep rocky slopes composed by white crystalline marble-like highly eroded limestone near Dau Dang Waterfall of Nang River around point 22º27’09’’N 105º34’16’E at elev. of about 150 m a.s.l. Terrestrial fern with erect fronds to 1 m tall in shady place. Common.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2326.

All photos © - L. Averyanov

Polypodoaceae s.l.

Tectaria sp.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on steep rocky slopes composed by white crystalline marble-like highly eroded limestone near Dau Dang Waterfall of Nang River around point 22º27’09’’N 105º34’16’E at elev. of about 150 m a.s.l. Terrestrial fern with erect fronds to 1 m tall in shady place. Common.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2325.

All photos © - L. Averyanov

Plumbaginaceae

Plumbago indica L.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on steep rocky slopes composed by white crystalline marble-like highly eroded limestone near Dau Dang Waterfall of Nang River around point 22º27’09’’N 105º34’16’E at elev. of about 150 m a.s.l. Terrestrial erect herb or undershrub to 1.5 m tall in open place. Flowers white. Not common.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2324.

All photos © - L. Averyanov

Commelinaceae

Pollia sp.

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on steep rocky slopes composed by white crystalline marble-like highly eroded limestone near Dau Dang Waterfall of Nang River around point 22º27’09’’N 105º34’16’E at elev. of about 150 m a.s.l. Terrestrial erect herb to 1 m tall in wet open place. Flowers white, fruits bluish. Very common.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2323.

All photos © - L. Averyanov

Urticaceae

Boehmeria cylindrica (L.) Sw.?

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on steep rocky slopes composed by white crystalline marble-like highly eroded limestone near Dau Dang Waterfall of Nang River around point 22º27’09’’N 105º34’16’E at elev. of about 150 m a.s.l. Climbing shrub with pendulous branches on open cliff. Very common.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2322.

All photos © - L. Averyanov

Tiliaceae

Burettiodendron sp.?

Bac Kan Province, Ba Be District, Ba Be National Park. Dry evergreen broad-leaved secondary forest on steep rocky slopes composed by white crystalline marble-like highly eroded limestone near Dau Dang Waterfall of Nang River around point 22º27’09’’N 105º34’16’E at elev. of about 150 m a.s.l. Tree about 15 m tall along river in rather open place. Uncommon.

20 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2321.

All photos © - L. Averyanov

Sambucaceae

Sambucus javanica Reinw. ex Blume

Bac Kan Province, Ba Be District, Nam Mau Commune, Nam Dai Village. Dry evergreen broad-leaved forest on steep rocky slopes composed by white to gray crystalline marble-like limestone around point 22º25’20’’N 105º35’03’E at elev. of about 650 m a.s.l. Shrub to 3 m tall in open place along stream. Flowers yellow. Common in populated area.

18 October 2023. Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2320.

All photos © - L. Averyanov

Convallariaceae

Peliosanthes sp.

Bac Kan Province, Ba Be District, Nam Mau Commune, Nam Dai Village. Dry evergreen broad-leaved forest on steep rocky slopes composed by white to gray crystalline marble-like limestone around point 22º25’20’’N 105º35’03’E at elev. of about 650 m a.s.l. Terrestrial herb on steep shady rocky slope. Flower buds dull violet. Not common.

18 October 2023. Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2319.

All photos © - L. Averyanov

Balanophoraceae

Balanophora indica (Arn.) Griff.

Bac Kan Province, Ba Be District, Nam Mau Commune, Nam Dai Village. Dry evergreen broad-leaved forest on steep rocky slopes composed by white to gray crystalline marble-like limestone around point 22º25’20’’N 105º35’03’E at elev. of about 650 m a.s.l. Achlorophyllous ground red parasite on steep shady rocky slope. Not common. Female specimen.

18 October 2023. Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2317. (same 2316).

All photos © - L. Averyanov

Balanophoraceae

Balanophora indica (Arn.) Griff.

Bac Kan Province, Ba Be District, Nam Mau Commune, Nam Dai Village. Dry evergreen broad-leaved forest on steep rocky slopes composed by white to gray crystalline marble-like limestone around point 22º25’20’’N 105º35’03’E at elev. of about 650 m a.s.l. Achlorophyllous ground red parasite on steep shady rocky slope. Not common. Male specimen.

18 October 2023. Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2316 (same 2317).

All photos © - L. Averyanov

Sapindaceae

Sapindus saponaria L.

Bac Kan Province, Ba Be District, Nam Mau Commune, Nam Dai Village. Dry evergreen broad-leaved forest on steep rocky slopes composed by white to gray crystalline marble-like limestone around point 22º25’20’’N 105º35’03’E at elev. of about 650 m a.s.l. Large tree on steep shady rocky slope. Not common.

18 October 2023. Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2315.

All photos © - L. Averyanov

Convallariaceae

Aspidistra sp.

Bac Kan Province, Ba Be District, Nam Mau Commune, Nam Dai Village. Dry evergreen broad-leaved forest on steep rocky slopes composed by white to gray crystalline marble-like limestone around point 22º25’20’’N 105º35’03’E at elev. of about 650 m a.s.l. Terrestrial herb on steep shady rocky slope. Leaves dark green. Very common.

18 October 2023. Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2314.

All photos © - L. Averyanov

Convallariaceae

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

Bac Kan Province, Ba Be District, Nam Mau Commune, Nam Dai Village. Dry evergreen broad-leaved forest on steep rocky slopes composed by white to gray crystalline marble-like limestone around point 22º25’20’’N 105º35’03’E at elev. of about 650 m a.s.l. Terrestrial herb on steep shady rocky slope. Leaves dark green to almost black. Rare.

18 October 2023. Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2313.

All photos © - L. Averyanov

Convallariaceae

Ophiopogon dracaenoides (Baker) Hook.f.⁣

Bac Kan Province, Ba Be District, Nam Mau Commune, Nam Dai Village. Dry evergreen broad-leaved forest on steep rocky slopes composed by white to gray crystalline marble-like limestone around point 22º25’20’’N 105º35’03’E at elev. of about 650 m a.s.l. Terrestrial herb on steep shady rocky slope. Not rare.

18 October 2023. Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2312.

All photos © - L. Averyanov

Orchidaceae

Herpysma longicaulis Lindl.

Lam Dong Province, Langbian Mountain. Evergreen broad-leaved forest at elevation 1600-2000 m a.s.l.

20 November 2023, Pham Van The, AL2803.

All photos © - Pham Van The

Orchidaceae

Habenaria viridiflora (Sw.) R.Br. ex Spreng.

Khanh Hoa Province, Khanh Vinh District, Giang Ly Municipality.

07 November 2023, Dinh Quang Diep, AL2802.

All photos © - Dinh Quang Diep

BAM-211

Gastrodia tonkinensis

18.10.2023

19.975786 104.976398

Vietnam, Thanh Hoa, Thuong Xuan, Bat Mọt, Xuan Lien Nature Reserve

Bragin A.M. (in col. Nuraliev M.)

All photos © - Bragin A.M.