Herbarium LE - Specimens

Passifloraceae

Passiflora sp.

Gia Lai Province, Krong Pa District, evergreen broad-leaved forest at elevation of about 600 m a.s.l.

2024, Nguyen Van Canh, AL3795.

Lowiaceae

Orchidantha sp.

Binh Dinh Province, Van Kanh District, evergreen broad-leaved forest at elevation of about 300 m a.s.l.

March 2025. Nguyen Van Canh, AL3775. Living plant only.

Fabaceae

Uraria acuminata Kurz

Lam Dong Province, Bao Lam District, evergreen forest on granite at about 600-700 m a.s.l., shrub to 3 m tall (or more?) in open place, flowers light violet, leaves dull silvery. Not common.

Nguyen Van Canh, 25 October 2024, AL 3365.

Arecaceae

Calamus sp.

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Secondary broad-leaved evergreen forest with bamboo on rocky sandstone slopes at elevation 10–50 m a.s.l.

Ascending suberect woody vine to 6 m tall on very steep slope of small rocky stream. Not rare.

21 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4427 (NHC220).

Rubiaceae

Hedyotis sp.

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Secondary broad-leaved evergreen forest with bamboo on rocky sandstone slopes at elevation 10–50 m a.s.l.

Erect terrestrial herb to 0.5 m tall in open place along forest trail. Flowers white. Common.

21 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4423 (NHC216).

Araceae

Acorus gramineus?

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Secondary broad-leaved evergreen forest with bamboo on rocky sandstone slopes at elevation 10–50 m a.s.l.

Lithophytic herb on wet mossy rocks along small rocky stream. Locally common.

21 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4422 (NHC215).

Chloranthaceae

Sarcandra sp.

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Secondary broad-leaved evergreen forest with bamboo on rocky sandstone slopes at elevation 10–50 m a.s.l.

Erect terrestrial herb to 0.6 m tall in open wet place along small rocky stream. Flowers bright yellow. Occasional.

21 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4421 (NHC214).

Lauraceae

Litsea sp. [“leaves ferruginea”]

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Young secondary broad-leaved evergreen forest on rocky sandstone slope along seashore at 0–5 m a.s.l.

Tree 10-12 m tall in open place in sublittoral not flooded zone along rocky seashore. Not common.

20 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4407 (NHC200).

Fabaceae

Uraria acuminata Kurz

Lam Dong Province, Bao Lam District, evergreen forest on granite at about 600-700 m a.s.l., shrub to 3 m tall (or more?) in open place, flowers light violet, leaves dull silvery. Not common.

Nguyen Van Canh, 25 October 2024, AL 3365.

Barclayaceae

Barclaya longifolia Wall.

Dak Lak Province, Yok Don National Park, Dipterocarp forest, in stream, locally common.

Nguyen Van Canh, 25 October 2024, AL 3364.

Barclayaceae

Barclaya longifolia Wall.

Dak Lak Province, Yok Don National Park, Dipterocarp forest, in stream, locally common.

Nguyen Van Canh, 25 October 2024, AL 3364.

Thismiaceae

Thismia mucronata Nuraliev

Lam Dong Province, Di Linh District, Nui San pass, broad-leaved evergreen forest on granite at elevation of about 800 m a.s.l. Terrestrial achlorophyllous plant near the small stream. Locally very common, more than 1000 plants are observed.

09 June 2024, Nguyen Van Canh, AL3251.

Orobanchaceae

Aeginetia acaulis (Roxb.) Walp.?

Dak Lak Province, Buon Don District, Krong Na commune, Yok Don National Park. Grassy lowland dipterocarp woodlands. 12 September 2023, Nguyen Van Canh, AL3341.

Asclepiadaceae

Hiepia corymbosa V.T.Pham & Aver.

Da Nang, Bana Mountain, evergreen forest, at elevation higher than 800 m a.s.l., epiphyte. Very common.

2020, Nguyen Danh Duc, Nguyen Van Canh, AL3329.

Theaceae

Camellia sp. (new sp.?)

Dak Lak Province, Ea Hleo District, evergreen forest, at elevation of 900-1000 m a.s.l., shrub to 4-5 m tall in forest. Not common. Flowers yellow.

February 2023, Nguyen Van Canh, AL3317.

Araceae

Amorphophallus sp.

Dak Lak Province, Lac District, evergreen forest, at elevation of 600-700 m a.s.l., terrestrial tuberiferous herb. Spathe dark purple. Common. Under cultivation flowers in June.

2022, Nguyen Van Canh, AL3316.

Begoniaceae

Begonia sp.

Dak Lak, Yok Don National Park, Buon Don District, Dipterocarpus forest along stream, at elevation of 200-300 m a.s.l., terrestrial herb. Flowers white to pink. Common.

2022, Nguyen Van Canh, AL3315.

Begoniaceae

Begonia sp.

Dak Lak Province, Lak District, evergreen forest at elevation of 600-700 m a.s.l., lithophytic herb. Flowers white. Common.

June 2022, Nguyen Van Canh, AL3312.

Begoniaceae

Begonia sp.

Dak Lak Province, Lak District, evergreen forest at elevation of 600-700 m a.s.l., lithophytic herb. Flowers white. Common.

June 2022, Nguyen Van Canh, AL3312.

Begoniaceae

Begonia sp.

Dak Lak Province, Lak District, bamboo forest at elevation of about 500 m a.s.l., terrestrial herb. Flowers white. Not common.

June 2022, Nguyen Van Canh, AL3308.

Begoniaceae

Begonia sp.

Dak Lak Province, Lak District, bamboo forest at elevation of about 500 m a.s.l., terrestrial herb. Flowers white. Not common.

June 2022, Nguyen Van Canh, AL3308.

Acanthaceae

Asystasia sp. s.l. (Chroesthes sp?)

Dak Lak Province, Chu Mu Moutaint, 12 February 2024, Nguyen Van Canh, AL2826.

Asclepiadaceae

Hoya sp. (H. sp. nov., H. multiflora aff.)

Dak Lak Province, M’Drak District, Chu Mu Mountain, evergreen broad-leaved forest at elevation of about 900 m a.s.l. Flowers greenish. Very rare.

April 2023, Nguyen Van Canh, AL2470.

Anacardiaceae

Spondias sp.?

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Young secondary broad-leaved evergreen forest on rocky sandstone slope along seashore at 0–5 m a.s.l.

Tree about 10 m tall. Young fruits dark green. Not rare.

19 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4391 (NHC184).

FLORA OF VIETNAM

Asclepiadaceae

Hoya phuwuaensis Kidyoo

Dak Lak Province, Lak District. Herbarium prepared from cultivated plants by Nguyen Van Canh in 05.2022. Det.: Nguyen Van Canh 05.2022.

AL 1397.

FLORA OF VIETNAM

Asclepiadaceae

Hoya sp. nov.? Holotype

Kien Giang Province, Phu Quoc Island. Herbarium prepared from cultivated plants by Nguyen Van Canh in 06.2021.

AL 1399.

Arecaceae

Calamus sp.

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Secondary broad-leaved evergreen forest with bamboo on rocky sandstone slopes at elevation 10–50 m a.s.l.

Climbing and ascending woody vine to 5-6 m long on very steep slope of small rocky stream. Fruits greenish. Common.

21 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4428 (NHC221).

Sapotaceae

Planchonella obovata (R.Br.) Pierre?

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Young secondary broad-leaved evergreen forest on rocky sandstone slope along seashore at 0–5 m a.s.l.

Treelet or shrub to 4 m tall in open place in sublittoral not flooded zone along rocky seashore. Flower buds greenish. Not common.

20 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4406 (NHC199).

Rhizophoraceae

Ceriops tagal (Perr.) C.B.Rob.

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Young secondary broad-leaved evergreen forest on rocky sandstone slope along seashore at 0–5 m a.s.l.

Treelet or shrub to 2 m tall among mangrove shrubs along rocky seashore. Flower buds yellowish-green. Common.

20 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4405 (NHC198).

Verbenacae

Lumnitzera sp.

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Young secondary broad-leaved evergreen forest on rocky sandstone slope along seashore at 0–5 m a.s.l.

Treelet or shrub to 2 m tall in open place in sublittoral not flooded zone along rocky seashore. Flower buds greenish. Common.

20 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4404 (NHC197).

Loranthaceae

Scurrula ferruginea (Roxb. ex Jack) Danser?

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Young secondary broad-leaved evergreen forest on rocky sandstone slope along seashore at 0–5 m a.s.l.

Parasitic shrub with erect shoot to 1 m long in canopies of tall tree (Litsea). Flowers outside brownish-yellow, inside dark violet. Not common.

20 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4403 (NHC196).

Smilacaceae

Smilax sp.

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Young secondary broad-leaved evergreen forest on rocky sandstone slope along seashore at 0–5 m a.s.l.

Semi-woody vine to 2-3 m long among dense shrubs in sublittoral not flooded zone along rocky seashore. Flowers light green. Not common.

20 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4402 (NHC195).

Rubiaceae

Mussaenda sp.

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Young secondary broad-leaved evergreen forest on rocky sandstone slope along seashore at 0–5 m a.s.l.

Woody vine to 5 m long in dense shrubs in sublittoral not flooded zone along rocky seashore. Fruits dark green. Not common.

20 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4401 (NHC194).

Verbenacae

Lumnitzera sp.

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Young secondary broad-leaved evergreen forest on rocky sandstone slope along seashore at 0–5 m a.s.l.

Treelet or shrub to 2 m tall in open place in sublittoral not flooded zone along rocky seashore. Flower buds green. Common.

20 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4400 (NHC193).

Arecaceae

Korthalsia sp.

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Young secondary broad-leaved evergreen forest on rocky sandstone slope along seashore at 0–5 m a.s.l.

Woody vine to 5 m long in sublittoral not flooded zone along rocky seashore. Flowers dull yellow. Very common.

20 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4399 (NHC192).

Euphorbiaceae

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Young secondary broad-leaved evergreen forest on rocky sandstone slope along seashore at 0–5 m a.s.l.

Undershrub to 1.5 m in shady place in sublittoral not flooded zone along rocky seashore. Flowers dull yellowish. Not rare.

20 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4398 (NHC191).

Asclepiadaceae

Cerbera manghas L.

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Young secondary broad-leaved evergreen forest on rocky sandstone slope along seashore at 0–5 m a.s.l.

Treelet 4-6 m tall in sublittoral not flooded zone along rocky seashore. Flowers white, in center reddish. Common.

20 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4397 (NHC190).

Convolvulaceae

Ipomoea sp.

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Young secondary broad-leaved evergreen forest on rocky sandstone slope along seashore at 0–5 m a.s.l.

Herbaceous or semi-woody vine to 8 m long in sublittoral not flooded zone along rocky seashore. Flower buds yellowish. Common.

20 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4396 (NHC189).

Euphorbiaceae

(Dark green leaves, male only)

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Young secondary broad-leaved evergreen forest on rocky sandstone slope along seashore at 0–5 m a.s.l.

Sublittoral evergreen treelet or shrub to 2 m tall along rocky seashore in not flooded zone with dark green leaves. Male flowers yellowish-green. Very common.

19 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4395 (NHC188).

Euphorbiaceae

(Red leaves, male, female)

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Young secondary broad-leaved evergreen forest on rocky sandstone slope along seashore at 0–5 m a.s.l.

Sublittoral semideciduous treelet or shrub to 2 m tall along rocky seashore in not flooded zone with old leaves orange-red to bright red. Male young flower buds and fruits light green. Very common.

19 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4394 (NHC187).

Gnetaceae

Gnetum gnemon L.

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Young secondary broad-leaved evergreen forest on rocky sandstone slope along seashore at 0–5 m a.s.l.

Tree to 15 m tall and 30 cm DBH. Occasional, commonly at elevation 50-150 m a.s.l.

19 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4393 (NHC186).

Moraceae

Artocarpus sp.

Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Young secondary broad-leaved evergreen forest on rocky sandstone slope along seashore at 0–5 m a.s.l.

Tree about 10 m tall. Young fruits white to paly yellow, edible. Not rare.

19 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4392 (NHC185).

Rhizophoraceae

Bruguiera gymnorhiza (L.) Lam. ex Savigny

Quang Ninh Province, Van Don District, Van Yen Commune, Bai Tu Long National Park, Cai Lim protection sector|, around point 21º06’30’’N 107º34’42’’E. Littoral mangrove shrub or treelet to 2.5 m tall in flooded littoral zone. Flower. Common.

16 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4352 (NHC152).

Gesneriaceae

Primulina drakei (B.L.Burtt) Mich.Möller & A.Weber

Quang Ninh Province, Van Don District, Minh Chuu Commune, Bai Tu Long National Park, Ba Mun protection sector, Mang Ha Island, around point 21º05’92’’N 107º34’99’’E. Open broad-leaved evergreen forest and scrub on steep slopes and cliffs composed by solid highly eroded limestone at elevation about 20 m a.s.l. Rosulate herb with succulent stem to 0.5 m tall on exposed cliff. Flowers dark purple-violet. Locally common.

18 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4378 (NHC171).

Apocynaceae??

Quang Ninh Province, Van Don District, Van Yen Commune, Bai Tu Long National Park, Cai Lim protection sector|, around point 21º06’30’’N 107º34’42’’E. Littoral mangrove shrub or treelet with milky juice to 3 m tall along flooded littoral zone. Flower buds yellowish green. Very common.

16 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4351 (NHC151).

Verbenaceae

Lumnitzera sp.

Quang Ninh Province, Van Don District, Van Yen Commune, Bai Tu Long National Park, Cai Lim protection sector|, around point 21º06’30’’N 107º34’42’’E. Littoral mangrove shrub or treelet to 2 m tall in flooded littoral zone. Flower buds yellowish green. Common.

16 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4350 (NHC150).

Balsaminaceae

Impatiens sp. (“yellow”)

Kon Tum Province, Dak Gley District, W slopes of Ngoc Linh Mountain system. Remnants of primary and secondary evergreen broad-leaved forest on granite and shale at elevation of about 1100 m a.s.l. Erect terrestrial and lithophytic herb to 1 m tall among rocks along shady stream canyon. Flowers bright yellow. Occasional.

02 May 2025, L. Averyanov, N.V. Canh, T. Maisak, AL4111.

Gesneriaceae

Aeschynanthus sp. (“bright red”)

Kon Tum Province, Dak Gley District, W slopes of Ngoc Linh Mountain system. Remnants of primary and secondary evergreen broad-leaved forest on granite and shale at elevation of about 1800 m a.s.l. Undershrub or scandent semiwoody vine to 1.5 m long in rather open place among Betula alnoides saplings along road, on steep slope. Flowers bright red. Occasional.

02 May 2025, L. Averyanov, N.V. Canh, T. Maisak, AL4110.

Ericaceae

Rhododendron sp. (“white pinkish medium flower”)

Kon Tum Province, Dak Gley District, W slopes of Ngoc Linh Mountain system. Remnants of primary and secondary evergreen broad-leaved forest on granite and shale at elevation of about 1800 m a.s.l. Shrub to 1.2 m tall in rather open place among Betula alnoides saplings along road. Flowers white, with pinkish tint in center. Locally common.

02 May 2025, L. Averyanov, N.V. Canh, T. Maisak, AL4109.

Ericaceae

Rhododendron sp. (“white yellowish big flower”)

Kon Tum Province, Dak Gley District, W slopes of Ngoc Linh Mountain system. Remnants of primary and secondary evergreen broad-leaved forest on granite and shale at elevation of about 1800 m a.s.l. Shrub to 2 m tall in rather open place among Betula alnoides saplings along road. Flowers light yellowish at opening, later almost pure white. Locally common.

02 May 2025, L. Averyanov, N.V. Canh, T. Maisak, AL4108.