Herbarium LE - Specimens

FLORA OF VIETNAM Commelinaceae Floscopa scandens Lour. Ha Giang Prov., Quan Ba Distr., Thai An Commune, Seo Lung Two Village, around point 22.96988ºN 105.08646ºE. Very steep mountain slopes composed of stratified shale and clayey subsoil at elevation 800–1000 m a.s.l. Primary and secondary evergreen broad-leaved humid forest. Terrestrial herb in open rocky place along stream. Flowers pinkish. Common. 10 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1503.

FLORA OF VIETNAM Polypodiaceae s.l. (Cibotiaceae) Cibotium barometz (L.) J. Sm. Ha Giang Prov., Quan Ba Distr., Thai An Commune, Seo Lung Two Village, around point 22.96988ºN 105.08646ºE. Very steep mountain slopes composed of stratified shale and clayey subsoil at elevation 800–1000 m a.s.l. Primary and secondary evergreen broad-leaved humid forest. Woody fern on open steep slope along trail. Stem 0.5 m tall, fronds to 3 m long. Very common. 10 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1507.

FLORA OF VIETNAM Polypodiaceae s.l. (Thelipteridaceae) Cyclosorus subpubescens (Blume) Ching Ha Giang Prov., Quan Ba Distr., Thai An Commune, Seo Lung Two Village, around point 22.96988ºN 105.08646ºE. Very steep mountain slopes composed of stratified shale and clayey subsoil at elevation 800–1000 m a.s.l. Primary and secondary evergreen broad-leaved humid forest. Terrestrial fern on very steep wet shady slope. Fronds to 2 m long. Common. 10 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1501.

FLORA OF VIETNAM Polypodiaceae s.l. (Cyatheaceae) Sphaeropteris brunoniana (Hook.) R.M. Tryon Ha Giang Prov., Quan Ba Distr., Tung Vai Commune, Thang Village, around point 23.05349ºN 104.86446ºE, steep rocky slopes of river valley composed with eroded limestone mixed with sandstone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest along river. Woody fern about 2 m tall on steep shady slope. Common. 7 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1434.

FLORA OF VIETNAM Verbenaceae Clerodendrum mandarinorum Diels Ha Giang Prov., Quan Ba Distr., Tung Vai Commune, Thang Village, around point 23.05349ºN 104.86446ºE, steep rocky slopes of river valley composed with eroded limestone mixed with sandstone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest along river. Tree to 15 m tall in open place along river valley. Fruits dark blue to black. Occasional. 7 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1435. Det.: Chen Yaping 08.12.2019

FLORA OF VIETNAM Polypodiaceae s.l. Asplenium scortechinii Bedd. Ha Giang Prov., Quan Ba Distr., Tung Vai Commune, Thang Village, around point 23.05349ºN 104.86446ºE, steep rocky slopes of river valley composed with eroded limestone mixed with sandstone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest along river. Epiphyte on old mossy trees along stream. Common. 7 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1444.

FLORA OF VIETNAM Amaranthaceae Deeringia amaranthoides Merr. Ha Giang Prov., Quan Ba Distr., Tung Vai Commune, Thang Village, around point 23.05349ºN 104.86446ºE, steep rocky slopes of river valley composed with eroded limestone mixed with sandstone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest along river. Semi woody vine to 4 m long on open slope. Flowers light greenish. Occasional. 7 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1449.

FLORA OF VIETNAM Polypodiaceae s.l. (Thelypteridaceae) Cyclosorus erubescens (Wall. ex Hook.) C.M. Kuo Ha Giang Prov., Quan Ba Distr., Tung Vai Commune, Thang Village, around point 23.05349ºN 104.86446ºE, steep rocky slopes of river valley composed with eroded limestone mixed with sandstone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest along river. Terrestrial fern on very steep river slope. Fronds to 1.6 m tall. Common. 7 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1443.

FLORA OF VIETNAM Begoniaceae Begonia versicolor Irmsch. Ha Giang Prov., Quan Ba Distr., Tung Vai Commune, Thang Village, around point 23.05349ºN 104.86446ºE, steep rocky slopes of river valley composed with eroded limestone mixed with sandstone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest along river. Terrestrial and lithophytic herb on very steep shady river slope. Leaved dirty purple marked above. Not common. 7 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1450.

FLORA OF VIETNAM Begoniaceae Begonia hemsleyana Hook.f. Ha Giang Prov., Quan Ba Distr., Tung Vai Commune, Thang Village, around point 23.05349ºN 104.86446ºE, steep rocky slopes of river valley composed with eroded limestone mixed with sandstone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest along river. Terrestrial herb to 0.5 m tall on steep shady stream slope. Common. 7 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1448.

FLORA OF VIETNAM Polypodiaceae s.l. Pteris tripartita Sw. Ha Giang Prov., Quan Ba Distr., Tung Vai Commune, Thang Village, around point 23.05349ºN 104.86446ºE, steep rocky slopes of river valley composed with eroded limestone mixed with sandstone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest along river. Terrestrial fern on very steep river slope. Fronds to 1.2 m tall. Common. 7 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1442.

FLORA OF VIETNAM Polypodiaceae Pyrrosia lingua (Thunb.) Farw. Ha Giang Prov., Quan Ba Distr., Tung Vai Commune, Thang Village, around point 23.05349ºN 104.86446ºE, steep rocky slopes of river valley composed with eroded limestone mixed with sandstone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest along river. Creeping epiphyte on old mossy tree along stream. Very common. 7 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1441.

FLORA OF VIETNAM Arecaceae Caryota monostachya Beccari Ha Giang Prov., Quan Ba Distr., Tung Vai Commune, Thang Village, around point 23.05349ºN 104.86446ºE, steep rocky slopes of river valley composed with eroded limestone mixed with sandstone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest along river. Palm about 1.2 m tall on steep rocky river slope. Flowers dull brownish-purple, stamens bright yellow. Fruits dark glossy green. Common. 7 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1454. Det.: A. Henderson 10.12.2019

FLORA OF VIETNAM Fabaceae s.l. (Mimosaceae) Archidendron chevalieri (Kosterm.) I.C. Nielsen Ha Giang Prov., Quan Ba Distr., Tung Vai Commune, Thang Village, around point 23.05349ºN 104.86446ºE, steep rocky slopes of river valley composed with eroded limestone mixed with sandstone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest along river. Tree about 15 m tall on very steep rocky river slope. Fruits light dull brownish. Common. 7 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1453. Det.: Sawai Mattapha 29.11.2019

FLORA OF VIETNAM Polypodiaceae Selliguea griffithiana (Hook.) S. Linds. Ha Giang Prov., Quan Ba Distr., Tung Vai Commune, Thang Village, around point 23.05349ºN 104.86446ºE, steep rocky slopes of river valley composed with eroded limestone mixed with sandstone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest along river. Creeping epiphyte on old mossy tree along stream. Very common. 7 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1440.

FLORA OF VIETNAM Convallariaceae Tupistra nganii K.S. Nguyen, Aver. & N. Tanaka Ha Giang Prov., Quan Ba Distr., Tung Vai Commune, Thang Village, around point 23.05349ºN 104.86446ºE, steep rocky slopes of river valley composed with eroded limestone mixed with sandstone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest along river. Terrestrial herb on very steep rocky shady river slope. Flowers yellow. Common. 7 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1452.

FLORA OF VIETNAM Poaceae (Bambusoideae) Bambusa sp. Ha Giang Prov., Quan Ba Distr., Tung Vai Commune, Thang Village, around point 23.05349ºN 104.86446ºE, steep rocky slopes of river valley composed with eroded limestone mixed with sandstone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest along river. Woody grass to 15 m tall among agricultural fields on flat alluvial river valley. Common aboriginal species. 7 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1457.

FLORA OF VIETNAM Polypodiaceae s.str. Prosaptia khasyana (Hook.) C. Chr. & Tard. Ha Giang Prov., Quan Ba Distr., Ta Van Commune, Can Ho Village, around point 23.03513ºN 104.87016ºE, steep rocky mountain slopes composed of eroded limestone at elevation 1100–1250 m a.s.l. near mountain top. Secondary evergreen broad-leaved humid forest. Epiphyte on old mossy tree. Common. 9 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1461.

FLORA OF VIETNAM Gesneriaceae Aeschynanthus superbus C.B. Clarke Ha Giang Prov., Quan Ba Distr., Tung Vai Commune, Thang Village, around point 23.05349ºN 104.86446ºE, steep rocky slopes of river valley composed with eroded limestone mixed with sandstone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest along river. Semiwoody epiphytic vine to 3 m long on very steep shady rocky river slope. Not common. 7 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1451.

FLORA OF VIETNAM Boraginaceae Cynoglossum zeylanicum Thunb. ex Lehm. Ha Giang Prov., Quan Ba Distr., Tung Vai Commune, Thang Village, around point 23.05349ºN 104.86446ºE, steep rocky slopes of river valley composed with eroded limestone mixed with sandstone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest along river. Terrestrial herb in open rocky place along trail. Flowers light blue to almost white. Locally common. Root locally edible being cooked with meat. 7 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1456.

FLORA OF VIETNAM Urticaceae Boehmeria cylindrica (L.) Sw. Ha Giang Prov., Quan Ba Distr., Tung Vai Commune, Thang Village, around point 23.05349ºN 104.86446ºE, steep rocky slopes of river valley composed with eroded limestone mixed with sandstone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest along river. Terrestrial herb in open rocky place along trail. Inflorescences pale green to pinkish. Not common. 7 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1455.

FLORA OF VIETNAM Fabaceae Padbruggea dasyphylla Miq. ( = Callerya dasyphylla (Miq.) Schot) Ha Giang Prov., Quan Ba Distr., Ta Van Commune, Can Ho Village, around point 23.03513ºN 104.87016ºE, steep rocky mountain slopes composed of eroded limestone at elevation 1100–1250 m a.s.l. near mountain top. Secondary evergreen broad-leaved humid forest. Woody vine to 15 m long and 7 cm in diameter, timber and bark with red juice. Fruits velvety hairy, yellow-greenish. Locally used as medicinal plant (with alcohol). Common. 9 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1478. Det.: Sawai Mattapha 29.11.2019

FLORA OF VIETNAM Begoniaceae Begonia rhytidophylla Y.M. Shui & W.H. Chen Ha Giang Prov., Quan Ba Distr., Ta Van Commune, Can Ho Village, around point 23.03513ºN 104.87016ºE, steep rocky mountain slopes composed of eroded limestone at elevation 1100–1250 m a.s.l. near mountain top. Secondary evergreen broad-leaved humid forest. Lithophytic rosulate herb on vertical cliffs. Leaves dark purple on both sides. Locally common. 9 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1487. Det.: Yu-Min Shui 20.12.2019

FLORA OF VIETNAM Begoniaceae Begonia rhytidophylla Y.M. Shui & W.H. Chen Ha Giang Prov., Quan Ba Distr., Ta Van Commune, Can Ho Village, around point 23.03513ºN 104.87016ºE, steep rocky mountain slopes composed of eroded limestone at elevation 1100–1250 m a.s.l. near mountain top. Secondary evergreen broad-leaved humid forest. Lithophytic rosulate herb on vertical cliffs. Leaves dark purple on both sides. Locally common. 9 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1487. Det.: Yu-Min Shui 20.12.2019

FLORA OF VIETNAM Gesneriaceae Hemiboea ovalifolia (W.T. Wang) A. Weber & Mich. Möller Ha Giang Prov., Quan Ba Distr., Ta Van Commune, Can Ho Village, around point 23.03513ºN 104.87016ºE, steep rocky mountain slopes composed of eroded limestone at elevation 1100–1250 m a.s.l. near mountain top. Secondary evergreen broad-leaved humid forest. Terrestrial herb among mossy rocks. Leaves dark green, pale green below. Very common. 9 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1483.

FLORA OF VIETNAM Fabaceae Ormosia sp. Ha Giang Prov., Quan Ba Distr., Ta Van Commune, Can Ho Village, around point 23.03513ºN 104.87016ºE, steep rocky mountain slopes composed of eroded limestone at elevation 1100–1250 m a.s.l. near mountain top. Secondary evergreen broad-leaved humid forest. Shrub or small tree 5-7 m tall and 7 cm in diameter. Timber is very hard. Common, but widely logged for the timber sale (very expensive). 9 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1479. Det.: Sawai Mattapha 29.11.2019

FLORA OF VIETNAM Melastomataceae Medinilla petelotii Merr. Ha Giang Prov., Quan Ba Distr., Ta Van Commune, Can Ho Village, around point 23.03513ºN 104.87016ºE, steep rocky mountain slopes composed of eroded limestone at elevation 1100–1250 m a.s.l. near mountain top. Secondary evergreen broad-leaved humid forest. Epiphytic scandent undershrub on old mossy tree. Flowers pink to pink-purple. Common. 9 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1484.

FLORA OF VIETNAM Rosaceae Eriobotrya elliptica Lindl. Ha Giang Prov., Quan Ba Distr., Ta Van Commune, Can Ho Village, around point 23.03513ºN 104.87016ºE, steep rocky mountain slopes composed of eroded limestone at elevation 1100–1250 m a.s.l. near mountain top. Secondary evergreen broad-leaved humid forest. Tree to 20 m tall and to 20 cm in diameter. Flowers pure white, very fragrant. Very common. Timber of good quality. 9 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1482.

FLORA OF VIETNAM Fabaceae Padbruggea dasyphylla Miq. ( = Callerya dasyphylla (Miq.) Schot) Ha Giang Prov., Quan Ba Distr., Ta Van Commune, Can Ho Village, around point 23.03513ºN 104.87016ºE, steep rocky mountain slopes composed of eroded limestone at elevation 1100–1250 m a.s.l. near mountain top. Secondary evergreen broad-leaved humid forest. Woody vine to 15 m long and 7 cm in diameter, timber and bark with red juice. Fruits velvety hairy, yellow-greenish. Locally used as medicinal plant (with alcohol). Common. 9 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1478. Det.: Sawai Mattapha 29.11.2019

FLORA OF VIETNAM Gesneriaceae Aeschynanthus superbus C.B. Clarke Ha Giang Prov., Quan Ba Distr., Ta Van Commune, Can Ho Village, around point 23.03513ºN 104.87016ºE, steep rocky mountain slopes composed of eroded limestone at elevation 1100–1250 m a.s.l. near mountain top. Secondary evergreen broad-leaved humid forest. Epiphytic scandent undershrub on old mossy tree. Fruits green. Occasional. 9 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1485.

FLORA OF VIETNAM Pittosporaceae Pittosporum glabratum Lindl. Ha Giang Prov., Quan Ba Distr., Ta Van Commune, Can Ho Village, around point 23.03513ºN 104.87016ºE, steep rocky mountain slopes composed of eroded limestone at elevation 1100–1250 m a.s.l. near mountain top. Secondary evergreen broad-leaved humid forest. Shrub 2 m tall in open rocky place. Fruits dull yellowish, seeds red. Common. 9 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1492.

FLORA OF VIETNAM Caprifoliaceae Viburnum sp. Ha Giang Prov., Quan Ba Distr., Ta Van Commune, Can Ho Village, around point 23.03513ºN 104.87016ºE, steep rocky mountain slopes composed of eroded limestone at elevation 1100–1250 m a.s.l. near mountain top. Secondary evergreen broad-leaved humid forest. Tree 5-7 m tall and 5-7 cm in diameter with very hard timber locally used for handicrafts. Very common. 9 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1491.

FLORA OF VIETNAM Violaceae Viola annamensis Baker f. Ha Giang Prov., Quan Ba Distr., Ta Van Commune, Can Ho Village, around point 23.03513ºN 104.87016ºE, steep rocky mountain slopes composed of eroded limestone at elevation 1100–1250 m a.s.l. near mountain top. Secondary evergreen broad-leaved humid forest. Terrestrial herb in open rocky place. Common. 9 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1488.

FLORA OF VIETNAM Cornaceae Cornus sp. Ha Giang Prov., Quan Ba Distr., Ta Van Commune, Can Ho Village, around point 23.03513ºN 104.87016ºE, steep rocky mountain slopes composed of eroded limestone at elevation 1100–1250 m a.s.l. near mountain top. Secondary evergreen broad-leaved humid forest. Tree to 15 m tall and 20 cm in diam. Timber very hard with black nuclear timber. Common. 9 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1490.

FLORA OF VIETNAM Eriocaulaceae Eriocaulon duthiei Hook.f.? Ha Giang Prov., Quan Ba Distr., Ta Van Commune, Can Ho Village, around point 23.03513ºN 104.87016ºE, steep rocky mountain slopes composed of eroded limestone at elevation 1100–1250 m a.s.l. Secondary evergreen broad-leaved humid forest. Terrestrial herb in open grassy place at the base of mountain. Inflorescences white. Common. 9 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1495a.

FLORA OF VIETNAM Balsaminaceae Impatiens sp. 6 Ha Giang Prov., Quan Ba Distr., Ta Van Commune, Can Ho Village, around point 23.03513ºN 104.87016ºE, steep rocky mountain slopes composed of eroded limestone at elevation 1100–1250 m a.s.l. near mountain top. Secondary evergreen broad-leaved humid forest. Terrestrial herb to 1 m tall in open rocky place. Flowers orange. Not common. 9 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1493.

FLORA OF VIETNAM Parnassiaceae* Parnassia wightiana Wall.* Ha Giang Prov., Quan Ba Distr., Ta Van Commune, Can Ho Village, around point 23.03513ºN 104.87016ºE, steep rocky mountain slopes composed of eroded limestone at elevation 1100–1250 m a.s.l. Secondary evergreen broad-leaved humid forest along rocky stream. Terrestrial and lithophytic herb on open wet mossy stream rocks. Flowers white. Common. 9 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1494.

FLORA OF VIETNAM Valerianaceae Valeriana hardwickii Wall. Ha Giang Prov., Quan Ba Distr., Cao Ma Po Commune, Then Van 1 Village, Binh Mountain, around point 23.09452ºN 104.84831ºE, steep rocky slopes composed with highly eroded limestone at elevation 1400–1600 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest with plantation of “wild-grown” Amomum. Erect terrestrial and lithophytic herb to 1 m tall on open rocky place. Occasional. 4 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1252.

FLORA OF VIETNAM Betulaceae Betula alnoides Buch.-Ham. Ha Giang Prov., Quan Ba Distr., Thai An Commune, Seo Lung Two Village, around point 22.96988ºN 105.08646ºE. Very steep mountain slopes composed of stratified shale and clayey subsoil at elevation 800–1000 m a.s.l. Primary and secondary evergreen broad-leaved humid forest. Semideciduous tree to 30 m tall. Very common. Co-dominant (or occasional mono-dominant) of the forest. 10 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1496.

FLORA OF VIETNAM Eriocaulaceae Eriocaulon nigrum Lecomte? Ha Giang Prov., Quan Ba Distr., Ta Van Commune, Can Ho Village, around point 23.03513ºN 104.87016ºE, steep rocky mountain slopes composed of eroded limestone at elevation 1100–1250 m a.s.l. Secondary evergreen broad-leaved humid forest. Terrestrial herb in open grassy place at the base of mountain. Inflorescences white. Common. 9 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1495b.

FLORA OF VIETNAM Melastomataceae Sonerila annamica Guillaumin Ha Giang Prov., Quan Ba Distr., Thai An Commune, Seo Lung Two Village, around point 22.96988ºN 105.08646ºE. Very steep mountain slopes composed of stratified shale and clayey subsoil at elevation 800–1000 m a.s.l. Primary and secondary evergreen broad-leaved humid forest. Terrestrial herb on very steep wet shady slope. Flowers pink, anthers yellow. Occasional. 10 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1499.

FLORA OF VIETNAM Gesneriaceae Hemiboea malipoensis Y.H. Tan Ha Giang Prov., Quan Ba Distr., Cao Ma Po Commune, Then Van 1 Village, Binh Mountain, around point 23.09452ºN 104.84831ºE, steep rocky slopes composed with highly eroded limestone at elevation 1400–1600 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest with plantation of “wild-grown” Amomum. Lithophytic herb on shady rocks. Flowers light yellow. Common. 4 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1254.

FLORA OF VIETNAM Urticaceae Elatostema radicans Wedd. Ha Giang Prov., Quan Ba Distr., Thai An Commune, Seo Lung Two Village, around point 22.96988ºN 105.08646ºE. Very steep mountain slopes composed of stratified shale and clayey subsoil at elevation 800–1000 m a.s.l. Primary and secondary evergreen broad-leaved humid forest. Terrestrial herb on very steep wet shady slope. Flowers dirty violet. Occasional. 10 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1497. Det.: Fu Longfei 09.12.2019

FLORA OF VIETNAM Verbenaceae Clerodendrum kwangtungense Hand.-Mazz. Ha Giang Prov., Quan Ba Distr., Thai An Commune, Seo Lung Two Village, around point 22.96988ºN 105.08646ºE. Very steep mountain slopes composed of stratified shale and clayey subsoil at elevation 800–1000 m a.s.l. Primary and secondary evergreen broad-leaved humid forest. Treelet or shrub 3-4 m tall. Calyx pink, fruits black. Occasional. 10 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1498. Det.: Chen Yaping 08.12.2019

FLORA OF VIETNAM Piperaceae Peperomia tetraphylla Hook. & Arn. Ha Giang Prov., Quan Ba Distr., Cao Ma Po Commune, Then Van 1 Village, Binh Mountain, around point 23.09452ºN 104.84831ºE, steep rocky slopes composed with highly eroded limestone at elevation 1400–1600 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest with plantation of “wild-grown” Amomum. Epiphyte on old mossy tree. Occasional. 4 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1251.

FLORA OF VIETNAM Begoniaceae Begonia subhowii S.H. Huang Ha Giang Prov., Quan Ba Distr., Cao Ma Po Commune, Then Van 1 Village, Binh Mountain, around point 23.09452ºN 104.84831ºE, steep rocky slopes composed with highly eroded limestone at elevation 1400–1600 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest with plantation of “wild-grown” Amomum. Terrestrial and lithophytic herb in shady places. Flowers white or white with light pink tint. Common. 4 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1260. Det.: Yu-Min Shui 20.12.2019

FLORA OF VIETNAM Primulaceae Lysimachia insignis Hemsl. Ha Giang Prov., Quan Ba Distr., Cao Ma Po Commune, Then Van 1 Village, Binh Mountain, around point 23.09452ºN 104.84831ºE, steep rocky slopes composed with highly eroded limestone at elevation 1400–1600 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest with plantation of “wild-grown” Amomum. Erect terrestrial and lithophytic herb to 1 m tall in shady places. Common. 4 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1259.