Herbarium LE - Specimens

Polygalaceae

Polygala sp.

Kon Tum Province, Kon Plong District, Kon Chu Rang Nature Reserve near Mang Den Town. around point 14º602000 N 108º298525 E. Primary evergreen mixed and coniferous forest on granite with Dacrycarpus and Dacrydium at elevation about 1200 m a.s.l. Shrub to 2 m tall on top of ridge. Flowers yellowish with pink lip. Not rare.

22 November 2023, L. Averyanov, Nguyen Van Canh, T. Maisak, AL2760.

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.

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.

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.

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.

Podocarpaceae

Nageia wallichiana (C.Presl) Kuntze

Lam Dong Province, Di Linh District, Brah Yang Mountain, primary and old secondary evergreen broad-leaved and mixed forest (with Pinus khasya) on granite around point 11º27.669ʹ N 108º03.543ʹ E at elevation of 1100-1200 m a.s.l. Treelet 1.5-2 m tall on shady rocky slope. Not rare.

13 November 2023, L. Averyanov, Nguyen Van Canh, T. Maisak, AL2668.

Podocarpaceae

Dacrycarpus imbricatus (Blume) de Laub.

Lam Dong Province, Di Linh District, Brah Yang Mountain, primary and old secondary evergreen broad-leaved and mixed forest (with Pinus khasya) on granite around point 11º27.669ʹ N 108º03.543ʹ E at elevation of 1000-1100 m a.s.l. Tree about 25 m tall and 0.8 m DBH. Occasional.

14 November 2023, L. Averyanov, Nguyen Van Canh, T. Maisak, AL2686.

Polypodiaceae s.l.

Stenochlaena palustris (Burm.f.) Bedd.

Lam Dong Province, Di Linh District, Brah Yang Mountain, primary and old secondary evergreen broad-leaved and mixed forest (with Pinus khasya) on granite around point 11º27.669ʹ N 108º03.543ʹ E at elevation of 1000-1100 m a.s.l. Creeping epiphytic vine to 10 m long on shady rocky slope along stream. Locally common.

14 November 2023, L. Averyanov, Nguyen Van Canh, T. Maisak, AL2694.

Polypodiaceae s.l.

Stenochlaena palustris (Burm.f.) Bedd.

Lam Dong Province, Di Linh District, Brah Yang Mountain, primary and old secondary evergreen broad-leaved and mixed forest (with Pinus khasya) on granite around point 11º27.669ʹ N 108º03.543ʹ E at elevation of 1000-1100 m a.s.l. Creeping epiphytic vine to 10 m long on shady rocky slope along stream. Locally common.

14 November 2023, L. Averyanov, Nguyen Van Canh, T. Maisak, AL2694.

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.

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.

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.

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.

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.

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.

Polypodiaceae s.l.

Thelipteris 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 fern in shady rocky place. Locally common.

30 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2392.

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.

Polypodiaceae s.l.

Colysis 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. Creeping lithophytic fern in shady rocky place. Locally very common.

30 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2391.

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.

Polypodiaceae s.l.

Polypodium sp. s.l.

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. Primary broad-leaved evergreen mossy forest along main ridge at elevation 2100–2200 m a.s.l. Creeping epiphyte on mossy tree. Common.

08 November 2023, L. Averyanov, Nguyen Van Canh, Truong Ba Vuong, T. Maisak, AL2544 (BD 051).

Polypodiaceae s.l.

Polypodium sp. s.l.

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. Primary broad-leaved evergreen forest on steep granite slopes at elevation 2000–2200 m a.s.l. Creeping epiphyte on mossy tree. Common.

08 November 2023, L. Averyanov, Nguyen Van Canh, Truong Ba Vuong, T. Maisak, AL2540 (BD 047).

Poaceae

Bambusoideae

Neomicrocalamus prainii (Gamble) Keng 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. Woody grass with climbing liana-like stems 3-4 m long in rather open steep slope. Common.

17 October 2023. Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2259.

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.

Primulaceae

Lysimachia sp.

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. Creeping herb in open place. Flowers yellow. Common.

08 November 2023, L. Averyanov, Nguyen Van Canh, Truong Ba Vuong, T. Maisak, AL2531 (BD 038).

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.

Magnoliaceae

Magnolia ventii (N.V.Tiep) V.S.Kumar

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 place. Rare.

18 October 2023. Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2299.

Malvaceae

Hibiscus mesnyi Pierre

Lam Dong Province, Di Linh District, Brah Yang Mountain, secondary evergreen broad-leaved forest on granite around point 11º27.669ʹ N 108º03.543ʹ E at elevation of 600-700 m a.s.l. Tree to 15 m tall in open slope along road. Flowers bright orange, tepals with reddish veins. Locally common.

14 November 2023, L. Averyanov, Nguyen Van Canh, T. Maisak, AL2706.

Magnoliaceae

Michelia sp.

Dak Lak Province, Lac District, small fragments of secondary evergreen broad-leaved forest among coffee plantations around point 12º17’56’’N 108º08’01’’E at elevations of 500-600 m a.s.l. along road Buon Ma Tuot – Dalat. Tree about 15 m tall, flowers white.

05 November 2023, L. Averyanov, Nguyen Van Canh, T. Maisak, AL2476.

Magnoliaceae

Michelia sp.

Dak Lak Province, Lac District, small fragments of secondary evergreen broad-leaved forest among coffee plantations around point 12º17’56’’N 108º08’01’’E at elevations of 500-600 m a.s.l. along road Buon Ma Tuot – Dalat. Tree about 15 m tall, flowers white.

05 November 2023, L. Averyanov, Nguyen Van Canh, T. Maisak, AL2476.

Magnoliaceae

Magnolia fordiana Hu

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. Primary broad-leaved evergreen forest on steep granite slopes at elevation about 2000 m a.s.l. Tree 20-25 m tall. Very common. Usual co-dominant of forest.

08 November 2023, L. Averyanov, Nguyen Van Canh, Truong Ba Vuong, T. Maisak, AL2518 (BD 025).

Malvaceae

Hibiscus mesnyi Pierre

Lam Dong Province, Di Linh District, Brah Yang Mountain, secondary evergreen broad-leaved forest on granite around point 11º27.669ʹ N 108º03.543ʹ E at elevation of 600-700 m a.s.l. Tree to 15 m tall in open slope along road. Flowers bright orange, tepals with reddish veins. Locally common.

14 November 2023, L. Averyanov, Nguyen Van Canh, T. Maisak, AL2706.

Maranthaceae

Phrynium sp.

Lam Dong Province, Di Linh District, Brah Yang Mountain, primary and old secondary evergreen broad-leaved and mixed forest (with Pinus khasya) on granite around point 11º27.669ʹ N 108º03.543ʹ E at elevation of 1000-1100 m a.s.l.

Terrestrial rhizomatous herb to 1.8 m tall on shady wet rocky slope. Fruits light green. Locally common.

14 November 2023, L. Averyanov, Nguyen Van Canh, T. Maisak, AL2687.

Melastomataceae

Medinilla assamica (C.B.Clarke) C.Chen

Quang Nam Province, Nong Son District, evergreen forest along stream at elevation about of 200 m a.s.l., rare.

22 July 2022, Nguyen Van Canh, AL2443.

Melastomataceae

Phyllagathis sp.

Kon Tum Province, Kon Plong District, Kon Chu Rang Nature Reserve near Mang Den Town. around point 14º602000 N 108º298525 E. Primary evergreen mixed and coniferous forest on granite with Dacrycarpus and Dacrydium at elevation about 1200 m a.s.l. Terrestrial herb on shady steep slope. Flowers pink. Not common.

22 November 2023, L. Averyanov, Nguyen Van Canh, T. Maisak, AL2758.

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.

Rosaceae

Agrimonia pilosa Ledeb.

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 terrestrial herb to 0.6 m tall in open grassy place. Flowers yellow. Not common.

30 October 2023, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2387.

Rosaceae

Eriobotrya sp.

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. Primary broad-leaved evergreen forest on steep granite slopes at elevation about 2000 m a.s.l. Tree 15-20 m tall. Not common.

08 November 2023, L. Averyanov, Nguyen Van Canh, Truong Ba Vuong, T. Maisak, AL2519 (BD 026).

Rubiaceae

Ixora 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. Shrub to 2.5 m tall on steep rocky slope. Not common.

18 October 2023. Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2293.

Rutaceae

Clausena 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. Shrub to 2 m tall on steep rocky slope. Not common.

18 October 2023. Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2292.

Rubiaceae

Mycetia 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. Erect herb to 1.5 m tall on open rocky wet place. Flowers yellow. Not common.

18 October 2023. Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2290.

Rubiaceae

Psychotria 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. Shrub to 2.5 m tall on open rocky place. Common.

18 October 2023. Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2289.

Rubiaceae

Psychotria 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. Shrub to 2.5 m tall on steep rocky slope on shady humid valley between limestone hills. Not common.

18 October 2023. Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2284.

Rubiaceae

Argostemma sp.

Kon Tum Province, Kon Plong District, Kon Chu Rang Nature Reserve near Mang Den Town. around point 14º602000 N 108º298525 E. Primary evergreen mixed and coniferous forest on granite with Dacrycarpus and Dacrydium at elevation about 1200 m a.s.l. Creeping terrestrial herb in shady place. Locally common.

22 November 2023, L. Averyanov, Nguyen Van Canh, T. Maisak, AL2766.

Rubiaceae

Argostemma sp.

Kon Tum Province, Kon Plong District, Kon Chu Rang Nature Reserve near Mang Den Town. around point 14º602000 N 108º298525 E. Primary evergreen mixed and coniferous forest on granite with Dacrycarpus and Dacrydium at elevation about 1200 m a.s.l. Creeping terrestrial herb in shady place. Locally common.

22 November 2023, L. Averyanov, Nguyen Van Canh, T. Maisak, AL2765.

Rubiaceae

Lam Dong Province, Di Linh District, Brah Yang Mountain, primary and old secondary evergreen broad-leaved and mixed forest (with Pinus khasya) on granite around point 11º27.669ʹ N 108º03.543ʹ E at elevation of 1100-1200 m a.s.l.

Erect lithophytic herb on shady mossy boulders along stream. Not common.

13 November 2023, L. Averyanov, Nguyen Van Canh, T. Maisak, AL2658.

Rubiaceae

Geophila repens (L.) I.M.Johnst.

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 creeping herb in wet shady place. Fruits red. Not rare.

18 October 2023. Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, Nguyen Van Ly, T. Maisak, AL2306.

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.

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.

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.

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.