Herbarium LE - Specimens

Annonaceae

Rauwenhoffia 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. Shrub or small woody vine. Not common.

26 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2926.

Solanaceae

Solanum 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. Treelet 4-5 m tall in open place, flowers white with violet tint, ripe fruits dull orange. Occasional.

26 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2925.

Rubiaceae

Ixora 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. Shrub 1 n tall in in open place, flowers white. Rare.

26 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2923.

Alangiaceae

Alangium 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. Tree 5-8 m tall in open place, flowers white. Occasional.

26 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2922.

Solanaceae

Solanum 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. Erect herb to 1 m tall in open place along road. Flowers white with violet tint. Occasional.

26 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2921.

Polypodiaceae (Pteridaceae)

Pteris cretica L.

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 fern to 0.6 m tall on very steep rocky slope. Common.

26 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2920.

Euphorbiaceae

Antidesma 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. Tree 6-8 m tall in open place. Not rare.

26 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2919.

Arecaceae

Arenga caudata (Lour.) H.E.Moore

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. Palm to 1.5 tall on shady slope. Not common.

26 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2917.

Rutaceae

Evodia 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. Tree 10-15 m tall, to 0.3 m DBH on open place. Ripe fruits orange red. Common.

26 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2915.

Rutaceae

Evodia 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. Tree 10-15 m tall, to 0.3 m DBH on open place. Flowers white. Common.

26 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2914.

Fabaceae (Caesalpiniaceae)

Cassia 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. Tree to 15 m tall and 0.4 m DBH on steep slope along road. Common.

26 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2913.

Euphorbiaceae

Mallotus sp.

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. Tree to 10 m tall on rather open mossy rocky steep slope. Common.

25 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2910.

Gesneriaceae

Paraboea sp.

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 and lithophytic herb to 0.5 m tall on rather open mossy rocky steep slope. Locally common.

25 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2907.

Urticaceae

Procris rhizantha Gagnep.

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. Erect herb to 0.5 m tall on rocky, mossy, steep rather open slope. Not rare.

25 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2904.

Euphporbiaceae

Strophioblachia fimbricalyx Boerl.

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. Treelet 4–5 m tall on rather open place in valley between limestone hills. Fruits and calyx green. Not rare.

25 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2903.

Menispermaceae

Stephania sp.?

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. Herbaceous vine to 5 m long with globular tuber 20-25 cm in diam., among scrub on rocky, mossy, steep rather open slope. Fruits light green. Not rare.

25 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2902.

Asclepiadaceae

Dischidia acutifolia Maingay ex Hook.f.

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. Small herbaceous vine to 2 m long among scrub on mossy steep, rather open slope. Flowers pale yellowish. Common.

25 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2901.

Polypodiaceae

Pyrrosia adnascens (Sw.) Ching

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. Creeping epiphytic and lithophytic fern on mossy steep, rather open slope. Abundant.

25 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2900.

Asclepiadaceae

Hoya diversifolia Blume

Dak Lak Province, Chu Yang Sing Mountain, Chu Yang Sinh National Park, evergreen broad-leaved forest at elevation of 400-500 m a.s.l., lithophytic vine, obtained from local collectors in 2014.

10 May 2024, Nguyen Van Canh garden, AL3138.

Asclepiadaceae

Hoya thuhae Aver., Vuong & V.C.Nguyen

HOLOTYPE

Dak Lak Province, Yok Don National Park, Dipterocarp forest at elevation of about 200 m a.s.l., living plant obtained from local collectors in 2018 by Nguyen Van Canh. Herbarium specimen and photos were made from plants cultivated in Buon Ma Thuot on 10 May 2024, Nguyen Van Canh, L. Averyanov, T. Maisak, AL3137.

Zingiberaceae

Alpinia vietnamica

Da Nang, Son Tra, evergreen broad-leaved forest at elevation of about 400 m a.s.l., collected in 2021.

10 May 2024, Nguyen Van Canh garden, AL3133.

Lowiaceae

Orchidantha sp.

Dong Nai Province, Nam Cat Thien National Park, evergreen broad-leaved forest at elevation of about 200 m a.s.l., collected in 2019.

10 May 2024, Nguyen Van Canh garden, AL3132.

Zingiberaceae

Curcuma sp.

Dak Lak Province, Dipterocarp forest at elevation of about 200 m a.s.l., obtained from local collectors, collected in 2019.

10 May 2024, Nguyen Van Canh, AL3130.

Asclepiadaceae

Hoya burmanica Rolfe

Son La Province, obtained from local collectors,

10 May 2024, Nguyen Van Canh, AL3126.

Asclepiadaceae

Hoya pandurata Tsiang

Son La Province, obtained from local collectors,

10 May 2024, Nguyen Van Canh, AL3125.

Convallariaceae

Hedychium sp.

Dong Nai Province, Tan Phu District, Cat Thien National Parl, semideciduous broad-leaved forest at elevation of about 200 m a.s.l., humus epiphyte on big tree (Ficus sp.), flowers white to very light yellow, not common.

December 2023, Nguyen Van Canh, AL3118.

Zingiberaceae

Siliquamomum sp.

Dak Lak Province, M’Drak District, Chu Mu Mountain, 800-900 m a.s.l., erect terrestrial herb to 1 m tall, flowers light green, very common.

March 2024, Nguyen Van Canh, AL3113.

Acanthaceae

Asystasia sp.??

Dak Lak Province, M’Drak District, Chu Mu Mountain, 900 m a.s.l., erect terrestrial herb to 1 m tall, flowers dull orange, locally common.

March 2024, Nguyen Van Canh, AL3110.

Gesneriaceae

Aeschynanthus sp.

Dak Lak Province, M’Drak District, Chu Mu Mountain, 900 m a.s.l., epiphytic undershrub, with pendulous shoots to 1 m long, flowers dull orange, rare.

March 2024, Nguyen Van Canh, AL3108.

Convallariaceae

Peliosanthes micrantha?

Dak Lak Province, M’Drak District, Chu Mu Mountain, 700 m a.s.l., evergreen forest, terrestrial herb, not common.

March 2024, Nguyen Van Canh, AL3107a.

FLORA OF VIETNAM

Altingiaceae

Altingia sp.

Gia Lai, Kon Tum Prov.

Yakovlev G., LX-VN 620

14.05.1981

FLORA OF VIETNAM

Altingiaceae

Altingia sp.

Gia Lai, Kon Tum Prov.

Yakovlev G., LX-VN 745

21.05.1981

Hamamelidaceae

Altingia sp.

Quang Nam Prov., Dai Loc Distr., Dai Hong municipality, environs of Dai Hong town around point 15°49’19”N 107°56’58”E. Remnants of primary broadleaved evergreen forest on rocky sandy uplifted plateau composed with eroded sandstone at elev. about 500 m a.s.l. Tree 6-8 m tall in rocky places along small rocky stream. Not rare.

CPC 3452 19 May 2011

Coll.: L.Averyanov, P.K.Loc, N.Q.Hieu, P.V.The, N.T.Vinh.

FLORA OF VIETNAM

Altingiaceae

Altingia yunnanensis Rehd. et E.H. Wilson

Vietnam.

Takhtajan A., Takhtajan8401

18.01.1975

Det. Averyanov L. at 14.07.2024

FLORA OF VIETNAM

Hamamelidaceae

Altingia takhtadjanii?

Son La Prov., Yen Chau Distr., Muong Lum Municipality, Na Vang village around point 21°01’19”N 104°30’45”E.

Primary coniferous mixed forest with Calocedrus rupestris on very steep rocky slopes of remnant mountain composed with highly eroded solid limestone at elevation 900-1100 m a.s.l. Tree to 10 m tall on top of ridge. Occasional.

CPC 1907 2 April 2011

Coll.: L.Averyanov, N.T.Hiep, T.B.Ngan.

FLORA OF VIETNAM

Altingiaceae

Altingia chinensis Oliv. ex Hance.⁣

Tinh Vinh Phuc Prov.

Avrorin N., Avrorin 12051

07.05.1963

FLORA OF VIETNAM

Altingiaceae

Altingia chinensis Oliv. ex Hance.⁣

Tinh Vinh Phuc Prov.

Avrorin N., Avrorin 12016b

07.05.1963

FLORA OF VIETNAM

Hamamelidaceae

Altingia siamensis Craib

Quang Binh Prov., Minh Hoa Distr., Hoa Son municipality, near B’Lam Lang limestone mt., around point of dipterocarp forest, 17°42’23.8”N 105°47’59”E. Primary logged closed evergreen broad-leaved forest on silicat valley at elevation about 456 m a.s.l. Big deciduous tree, up to 40-45 m tall. Fallen down branches with old fruits. Very common along stream banks.

CPC 4384 17 August 2011

Coll.: N.T.Hiep, N.V.Tap, N.S.Khang & L.T.Kien.

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 on shelves of very steep rocky slope along rocky ridge edge. Locally very common. Male specimen.

27 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2955.

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 on shelves of very steep rocky slope along rocky ridge edge. Locally very common. Male specimen.

27 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2955.

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. Female specimen.

27 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2943.

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. Female specimen.

27 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2943.

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. 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. Lithophytic caudex palm-like plant with erect stem to 0.5 m tall on rather open mossy rocky steep slope. Locally common. Female specimen. “Cone” sub-globular, 15–20 cm in diameter.

25 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2909.

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. 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. Lithophytic caudex palm-like plant with erect stem to 0.5 m tall on rather open mossy rocky steep slope. Locally common. Female specimen. “Cone” sub-globular, 15–20 cm in diameter.

25 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2909.

Euphorbiaceae

Deutzianthus tonkinensis Gagnep.

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. Tree 10-12 m tall on open slope along road. Flowers white. Not common.

26 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2918.

Asclepiadaceae

Marsdenia 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. Semi-woody vine to 10 m long (and longer) in open place, flowers light green. Not common.

26 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2924.

Annonaceae

Mitrephora maingayi Hook.f. & Thomson

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 6-8 m tall in shady place. Flowers white to yellowish, fragrant. Occasional.

27 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2946.

Rutaceae

Clausena indica Oliv.

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 8 m tall in open rocky slope. Fruits reddish. Not rare.

27 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2952.

Celastraceae

Euonymus laxiflorus Champ. ex Benth.?

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 2-2.5 m tall on shady rocky slope. Flowers pink. Occasional.

27 April 2024, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL2954.

Cycadaceae

Cycas pectinata Buch.-Ham.?

Hanoi, National Forestry University area, Pacific Hotel garden, plant in cultivation. Tree 2.5–3 m tall with leaves to 2.5 m long, originated from southern Vietnam. Female specimen.

22 April 2024, L. Averyanov, Huu Cuong Nguyen, T. Maisak, AL2834