Herbarium LE - Specimens

FLORA OF LAOS Hin Nam No Nature Protected Area Zingiberaceae Alpinia oblongifolia Hayata Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34'13.3"N, 105°47'57.5"E. Primary evergreen broad-leaved dry forest at elev. 300-600 m a.s.l. Terrestrial herb to 1.2 m tall on open rocky slope. Flowers white, lip reddish. Common. 6 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 715.

FLORA OF LAOS Hin Nam No Nature Protected Area Zingiberaceae Alpinia sp.? Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34'13.3"N 105°47'57.5"E. Primary evergreen broad-leaved dry forest at elev. 700-1000 m a.s.l. Terrestrial herb to 1 n tall in shady place. Fruits and rhizomes cut strong zinger fragrant. Not rare. 3 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 565.

FLORA OF LAOS Hin Nam No Nature Protected Area Vitaceae Cissus adnata Roxb. Laos, Khammoune prov., Boualapha distr., Nong Seng village, Chanh Daeng mountain, around point 17°31'11.1"N, 105°46'41.4"E. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 400-600 m a.s.l. Terrestrial and lithophytic herb or undershrub to 1 m tall among exposed rocks near mountain top. Common. 11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 989.

FLORA OF LAOS Hin Nam No Nature Protected Area Zingiberaceae Meistera chinensis (T.L.Wu) Škorničk. & M.F. Newman ( = Amomum chinense T.L.Wu) Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31'02.7"N, 105°47'17.2"E. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l. Terrestrial herb to 2 m talon steep shady rocky slope. Flowers white, median tepal with yellow center, finely speckled with red. Not rare. 11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 907.

FLORA OF LAOS Hin Nam No Nature Protected Area Zingiberaceae Alpinia sp. (Catimbium sp.) Laos, Khammoune prov., Boualapha distr., Nong Seng village, Chanh Daeng mountain, around point 17°31' 1 l.L'N , 105°46'4L4"E. Secondary dry evergreen and semideciduous broad-leaved forest on sandy alluvial flat valley along river between karstic limestone hills at about 180 m a.s.l. Terrestrial herb to 3 m tall in open wet place. Flowers white, median tepal dark purple-red. Common. 11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak. Littideth Xaiyavongsa, Siphanom Keovankham, AL 1051.

FLORA OF LAOS Hin Nam No Nature Protected Area Zingiberaceae Meistera sp. ( = Amomum sp.) Laos, Khammoune prov., Boualapha distr., Vang Maner village, around point 17°29'39.3"N, 105°50'24.6"E. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 350-430 m a.s.l. Terrestrial herb to 1.5 m tall on shady rocky slope. Flowers white. Common. 9 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 880.

FLORA OF LAOS Hin Nam No Nature Protected Area Zingiberaceae Amomum odoratum Škorničk. & Aver., sp. nov. Holotype Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34'13.3"N 105°47'57.5"E. Primary evergreen broad-leaved dry forest at elev. 700-1000 m a.s.l. Terrestrial and lithophytic herb to 1 m tall on open rocky slope along stream. Flowers white, with strong, very pleasant fragrance, median tepal with yellow-orange center. Not rare. 3 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 587.

FLORA OF LAOS Hin Nam No Nature Protected Area Vitaceae Cayratia trifolia (L.) Domin ? Laos, Khammoune prov., Boualapha distr., Nong Seng village, Chanh Daeng mountain, around point 17°31'11.1"N, 105°46'41.4"E. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 400-600 m a.s.l. Scandent shrub or semi-woody vine 3-4 m long among open rocks on mountain top. Fruits dark purple. Common. 11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 977.

FLORA OF LAOS Hin Nam No Nature Protected Area Verbenaceae Premna mollissima Roth ( = Premna latifolia Roxb.) Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31'02.7"N, 105°47'17.2"E. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.i. Scandent shrub among open rocks on mountain top. Flowers light yellowish-green. Occasional. 11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 957.

FLORA OF LAOS Hin Nam No Nature Protected Area Urticaceae Elatostema tsoongii (Merr.) H. Schroet. Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34'13.3"N 105°47'57.5"E. Primary evergreen broad-leaved dry forest at elev. 700-1000 m a.s.l. Terrestrial herb among shady rocks. Not rare. 3 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 548.

FLORA OF LAOS Hin Nam No Nature Protected Area Urticaceae Pellionia repens (Lour.) Merr. Laos. Khammoune prov.. Boualapha distr., Vang Maner village, Palai mountain area, around point 17o30,13.6"N, 105°49'23.9"E, 520 m a.s.l. Primar> dry evergreen and semideciduous broad-leaved forest on sandy alluvial terrace and slopes of river valley between karstic limestone hills at 180-220 m a.s.l. Creeping terrestrial herb on shady steep slope along river. Leaves dark green with irregular white median stripe. Locally very common. 8 May 2018. L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 810.

FLORA OF LAOS Hin Nam No Nature Protected Area Rutaceae Murraya paniculata (L.) Jack Laos, Khammoune prov., Boualapha distr., Vang Maner village, Palai mountain area, around point 17°30'13.6"N, 105°49'23.9"E, 520 m a.s.l. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-500 m a.s.l. Shrub to 2 m tall in open place. Fruits dark glossy green. Occasional. 8 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 765.

FLORA OF LAOS Hin Nam No Nature Protected Area Rutaceae Melicope petrophila Aver., sp. nov. Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35'18.1"N, 105°47'47.5"E. Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l. Shrub 1-2 m tall on mountain top. Flowers yellowish. Very common. 5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 685.

FLORA OF LAOS Hin Nam No Nature Protected Area Rutaceae Paramignya petelotii Guillaumin Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35'00.3"N, 105°47'35.6"E. Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l. Woody vine, spiny. Calyx green. Occasional. 4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 630.

FLORA OF LAOS Hin Nam No Nature Protected Area Rutaceae Melicope pteleifolia (Bentham) T.G. Hartley Laos, Khammoune prov., Boualapha distr., Vang Maner village, Palai mountain area, around point 17°30'13.6"N, 105°49'23.9"E, 520 m a.s.l. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-500 m a.s.l. Undershrub 1.5-2 m tall in open place. Flowers yellowishgreen. Common. 8 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 801

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Lasianthus sp. Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34'13.3"N, 105°47'57.5"E. Primary evergreen broad-leaved dry forest at elev. 300-600 m a.s.l. Shrub 2-3 m tall on rocky slope. Flowers white. Occasional. 6 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 702

FLORA OF LAOS Hin Nam No Nature Protected Area Rutaceae Harrisonia perforata (Blanco) Merr. Laos, Khammoune prov., Boualapha distr., Vang Maner village, around point 17°29'39.3"N, 105°50'24.6"E. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 350-430 m a.s.l. Scandent shrub 1.5-2 m tall in open place. Very common. 9 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 888.

FLORA OF LAOS Hin Nam No Nature Protected Area Rutaceae Melicope pteleifolia (Bentham) T.G. Hartley Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34'13.3"N 105°47'57.5"E. Primary evergreen broad-leaved dry forest at elev. 700-1000 m a.s.l. Treelet 3-4 m tall. Very common. 3 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 570.

FLORA OF LAOS Hin Nam No Nature Protected Area Rutaceae Murraya sp. Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34'13.3"N 105°47'57.5"E. Primary evergreen broad-leaved dry forest at elev. 700-1000 m a.s.l. Undershrub to 0.5 m tall in shady place. Fruits juicy, pink sweetish, edible. Very common. 3 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 516.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Catunaregam sp. Laos, Khammoune prov., Boualapha distr., Vang Maner village, Palai mountain area, around point 17°30'13.6"N, 105°49'23.9"E, 520 m a.s.l. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-500 m a.s.l. Shrub to 2.5 m tall on exposed rocks of mountain top. Flowers white. Common. 8 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 782.

FLORA OF LAOS Hin Nam No Nature Protected Area Rutaceae Murraya kwangsiensis (C.C. Huang) C.C. Huang ? Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31'02.7"N, 105°47'17.2"E. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l. Undershrub to 0.5 m tall on shady rocky slope. Fruits dull pale pink, juicy, edible. Common. 11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 948.

FLORA OF LAOS Hin Nam No Nature Protected Area Rutaceae Murraya sp. Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34'13.3"N 105°47'57.5"E. Primary evergreen broad-leaved dry forest at elev. 700-1000 m a.s.l. Undershrub to 0.5 m tall in shady place. Fruits juicy, pink sweetish, edible. Very common. 3 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 516.

FLORA OF LAOS Hin Nam No Nature Protected Area Rutaceae Micromelum hirsutum Oliv. Laos, Khammoune prov., Boualapha distr., Nong Seng village, Chanh Daeng mountain, around point 17°31'11.1"N, 105°46'41.4"E. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 400-600 m a.s.l. Treelet 5-7 tall on open rocks near mountain top. Fruits red, later black. Common. 11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 1038.

FLORA OF LAOS Hin Nam No Nature Protected Area Rutaceae Melicope pteleifolia (Bentham) T.G. Hartley Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34'13.3"N 105°47'57.5"E. Primary evergreen broad-leaved dry forest at elev. 700-1000 m a.s.l. Shrub in open place. Flowers white to yellowish. Common. 3 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 576.

FLORA OF LAOS Nakai-Nam Theun Protected Area Rubiaceae Tarennoidea wallichii (J. D. Hooker) Tirvengadum & Sastre Laos, Khammoune prov., Boualapa distr., Langkhang village, steep southern slopes of sandstone ridge allied to the road from the north between points 17°34'02.2"N 105°42'42.6"E, 200 m and 17°34'51.1"N 105°43'01.2"E, 535 m a.s.l. Primary lowland semideciduous and evergreen dry forest on very steep rocky slopes. Tree to 15 m tall. Flowers pale yellow. Not rare. 15 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, AL 1072.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Ophiorrhiza rosacea Ridl. Laos, Khammoune prov., Boualapha distr., Vang Maner village, around point 17°29'39.3"N, 105°50'24.6"E. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 350-430 m a.s.l. Terrestrial herb among shady rocks on shady rocky slope. Flowers from white to violet. Not rare. 9 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 852.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Lasyanthus sp. Laos, Khammoune prov., Boualapha distr., Vang Maner village, Palai mountain area, around point 17°30'13.6"N, 105°49'23.9"E, 520 m a.s.l. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-500 m a.s.l. Shrub 2-3 m tall on shady rocky slope. Occasional. 8 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 803.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Psychotria sp. ? Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34'13.3"N, 105°47'57.5"E. Primary evergreen broad-leaved dry forest at elev. 300-600 m a.s.l. Shrub on rocky slope. Fruits dark green. Occasional. 6 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 706

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Lasianthus sp. Laos, Khammoune prov., Boualapha distr., Vang Maner village, around point 17°29'39.3"N, 105°50'24.6"E. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 350-430 m a.s.l. Shrub to 2 m tall on shady rocky slope. Flowers white. Common. 9 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 853.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Lasyantus sp. Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34'13.3"N 105°47'57.5"E. Primary evergreen broad-leaved dry forest at elev. 700-1000 m a.s.l. Shrub 2-3 m tall in shady place. Flowers white. Leaves with strong unpleasant smell. Not rare. 3 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 530.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Lasianthus sp. Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34'13.3"N, 105°47'57.5"E. Primary evergreen broad-leaved dry forest at elev. 300-600 m a.s.l. Shrub to 3 m tall on rocky slope. Fruits blue. Occasional. 6 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 708

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Laos, Khammoune prov., Boualapha distr., Nong Seng village, Chanh Daeng mountain, around point 17°31'11.1"N, 105°46'41.4"E. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 400-600 m a.s.l. Shrub 3-5 m tall on shady mountain slope. Fruits green. Very common. 11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 1040.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Hymenodictyon orixense (Roxb.) Mabb. Laos, Khammoune prov., Boualapha distr., Nong Seng village, Chanh Daeng mountain, around point 17°31'11.1"N, 105°46'41.4"E. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 400-600 m a.s.l. Tree 7-8 m tall on rocky slope near mountain top. Fruits brown. Common. 11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 1022.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Lasianthus sp. Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34'13.3"N, 105°47'57.5"E. Primary evergreen broad-leaved dry forest at elev. 300-600 m a.s.l. Shrub 2-3 m tall on shady rocky slope. Fruits blue. Common. 6 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 713.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Pavetta indica L. Laos, Khammoune prov., Boualapha distr., Nong Seng village, Chanh Daeng mountain, around point 17°31'11.1"N, 105°46'41.4"E. Secondary dry evergreen and semideciduous broad-leaved forest on sandy alluvial flat valley along river between karstic limestone hills at about 180 m a.s.l. Shrub 1.5-2 m tall on sandy river dunes. Flowers white. Very common. 11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 1062.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Chassalia curviflora (Wall.) Thwaites Laos, Khammoune prov., Boualapha distr., Vang Maner village, around point 17°29'39.3"N, 105°50'24.6"E. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 350-430 m a.s.l. Terrestrial herb to 1.5 m tall in shady rocky place. Flowers dull violet. Common. 9 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 870.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Lasyanthus sp. Laos, Khammoune prov., Boualapha distr., Vang Maner village, Palai mountain area, around point 17°30'13.6"N, 105°49'23.9"E, 520 m a.s.l. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-500 m a.s.l. Shrub 2-3 m tall on shady rocky slope. Flowers white. Occasional. 8 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 802.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Pavetta sp.? Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35'00.3"N, 105°47'35.6"E. Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l. Shrub or small tree on mountain top. Flowers white. Occasional. 4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 610.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Argostemma laeve Benn. Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35'18.1"N, 105°47'47.5"E. Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l. Terrestrial and lithophytic herb in wet shady place on mountain top. Flowers white, anthers yellow. Not common. 5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 681a.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Pavetta indica L. Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35'18.1"N, 105°47'47.5"E. Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l. Shrub about 3 m tall on mountain top. Flowers white. Very common. 5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 643a.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Hymenodictyon orixense (Roxb.) Mabb. Laos, Khammoune prov., Boualapha distr., Nong Seng village, Chanh Daeng mountain, around point 17°31'11.1"N, 105°46'41.4"E. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 400-600 m a.s.l. Tree 7-8 m tall on rocky slope near mountain top. Fruits brown. Common. 11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 1022.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35'18.1"N, 105°47'47.5"E. Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l. Treelet of shrub on mountain top. Flowers white. Occasional. 5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 655a.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Ophiorrhiza rosacea Ridl. Laos, Khammoune prov., Boualapha distr., Vang Maner village, around point 17°29'39.3"N, 105°50'24.6"E. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 350-430 m a.s.l. Terrestrial herb in open rocky place. Flowers white, apex of tepals violet. Not rare. 9 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 846.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Morinda officinalis F.C. How Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35'00.3"N, 105°47'35.6"E. Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l. Woody vine. Flowers white to light greenish. Occasional. 4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 640.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Chassalia curviflora (Wall.) Thwaites Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34'13.3"N 105°47'57.5"E. Primary evergreen broad-leaved dry forest at elev. 700-1000 m a.s.l. Shrub 1.5-2.5 m tall in shady place. Flowers light violet. Very common. 3 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 532.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Catunaregam spinosa (Thunb.) Tirveng. Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35'00.3"N, 105°47'35.6"E. Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l. Shrub in open rocky place on mountain top. Flower buds light yellow. Occasional. 4 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 635.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Chassalia curviflora (Wall.) Thwaites Laos, Khammoune prov., Boualapha distr., Vang Maner village, around point 17°29'39.3"N, 105°50'24.6"E. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 350-430 m a.s.l. Terrestrial herb in shady place. Flowers light purple-violet. Common. 9 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 839.

FLORA OF LAOS Hin Nam No Nature Protected Area Rubiaceae Psychotria sp. ? Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes at summit of Phou Chuang (Poujeuang) Mt. around point 17°35'18.1"N, 105°47'47.5"E. Primary evergreen mixed and coniferous dense wind-formed forest at elev. 1000-1400 m a.s.l. Woody vine on mountain top. Fruits green. Common. 5 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 653a.