François Gagnepain

Pilea cadierei (or the aluminium plant or watermelon pilea) is a species of flowering plant in the nettle family, Urticaceae. The species is endemic to the southern Chinese provinces of Guizhou and Yunnan, as well as Vietnam. The specific epithet cadierei refers to the 20th-century botanist R.P. Cadière. P. cadierei has earned the Royal Horticultural Society's Award of Garden Merit for its hardiness and reliability as a houseplant. In warmer countries, usually within USDA zones 8–12, the plant may be grown outside year-round as a perennial, either in-ground or contained, and pruned about 50%

Curcuma alismatifolia, Siam tulip or summer tulip (Thai: ปทุมมา, RTGS: pathumma; กระเจียวบัว, RTGS: krachiao bua; ขมิ้นโคก, RTGS: khamin khok) is a tropical plant native to Laos, northern Thailand, and Cambodia. Despite its name, it is not related to the tulip, but is a close relative of turmeric. It can grow as an indoor plant. It is a perennial herb growing up to 2 feet (0.61 metres) tall. Malvidin 3-rutinoside is a pigment responsible for bract color in C. alismatifolia.

Dendrobium is a genus of mostly epiphytic and lithophytic orchids in the family Orchidaceae. It is a very large genus, containing more than 1,800 species that are found in diverse habitats throughout much of south, east and southeast Asia, including China, Japan, India, the Philippines, Indonesia, Australia, New Guinea, Vietnam and many of the islands of the Pacific. Orchids in this genus have roots that creep over the surface of trees or rocks, rarely having their roots in soil. Up to six leaves develop in a tuft at the tip of a shoot and from one to a large number of flowers are arranged

Pycnospatha is a genus of flowering plants in the family Araceae. It contains only two species both of which are tuberous and endemic to Indochina (Laos, Thailand, Cambodia, Vietnam). Pycnospatha arietina Gagnep. - Thailand, Cambodia, Quan Phu Quoc Island of Vietnam Pycnospatha palmata Gagnep. - Laos, Thailand

Platanus kerrii (Kerr's plane) is a rare and distinctive species of plane tree (sycamore) native to the tropical forests of Vietnam and Laos in Southeast Asia. It is the only extant member of the subgenus Castaneophyllum, and is the sister group to all other lineages within Platanus. Unlike all other plane trees, P. kerrii is evergreen and retains unlobed leaves throughout its adult life, with none developing the lobed form characteristic of other Platanus species. While some have speculated that P. kerrii might represent a living analogue of ancestral plane trees, no fossil material clearly

Camchaya is a genus of flowering plants in the family Asteraceae. They are native to Asia, including China, Laos, Thailand, Vietnam, and Cambodia. These are annual herbs with coatings of hairs and globose glandular structures. The alternately arranged leaves have wavy or serrated blades on petioles. The inflorescence is a panicle which can be terminal or axillary. Some inflorescences have few flower heads, and some heads are solitary. The hemispherical head has up to 6 layers of phyllaries. It contains many purple florets which are tubular and expanded at the mouth into five pointed lobes and

Aulotandra is a genus of flowering plants native to Cameroon and Madagascar.

Antheroporum is a genus of flowering plants in the family Fabaceae. It belongs to the subfamily Faboideae. It includes five species native to southern China, Vietnam, and Thailand. Five species are accepted: Antheroporum banaense L.K.Phan & J.E.Vidal – Vietnam Antheroporum harmandii Gagnep. (syn. Antheroporum glaucum) – China (southwestern and southeastern Yunnan, western Guangxi, and southwestern Guizhou) and Vietnam Antheroporum pierrei Gagnep. – Thailand and Vietnam Antheroporum puudjaae Mattapha & Tetsana – Thailand Antheroporum vidalii L.K.Phan – Vietnam

Acer calcaratum is an Asian species of maple found in Yunnan and northern Indochina (Myanmar, Thailand, Vietnam). It is very rare in China. Acer calcaratum is a small tree up to 7 meters tall. Leaves are non-compound, the blade up to 15 cm long and 21 cm wide, with 3 deeply cut lobes but no teeth.

Parthenocissus dalzielii (Gagnepain 1911) is a creeper related to the grapevine family. It is a native plant of East and South-east Asia. In China it is found in Anhui, Fujian, Guangdon, Guangxi, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan and Zhejiang. It is commonly used in Hong Kong by the government as part of slope stabilization. Its Chinese name is 爬山虎.

Ficus subpisocarpa, commonly known as Japanese superb fig, superb fig or pen tube fig, is a species of fig native to Japan, China, Hong Kong, Taiwan and southeast Asia to the Moluccas (Ceram). Terrestrial or hemiepiphytic, it reaches a height of 12 m (39 ft). Ants, predominantly of the genus Crematogaster, have been recorded living in stem cavities.

Bulbophyllum evrardii is a flowering plant in the family Orchidaceae.

Bulbophyllum bariense is a flowering plant in the Family Orchidaceae.

Aphyllodium is a genus of flowering plants in the family Fabaceae. It belongs to the subfamily Faboideae. Members of the genus are found in various parts of Australia, South Asia, Southeastern Asia, and south China.

Tetrastigma voinierianum, called chestnut vine and lizard plant, is a species of flowering plant in the genus Tetrastigma, native to Laos and Vietnam, and introduced in Hawaii. It has gained the Royal Horticultural Society's Award of Garden Merit as a hothouse ornamental.

Sophora tonkinensis is a herb used in traditional Chinese medicine. Sofalcone is an oral gastrointestinal medication and a synthetic derivative of sophoradin, an isoprenyl chalcone found in S. tonkinensis.

Roscoea debilis is a perennial herbaceous plant found in Yunnan, China. Most members of the ginger family (Zingiberaceae), to which it belongs, are tropical, but R. debilis, like other species of Roscoea, grows in much colder mountainous regions.

Roscoea cautleyoides is a perennial herbaceous plant occurring in the Sichuan and Yunnan provinces of China. The scientific name is also spelt Roscoea cautleoides (see below). Most members of the ginger family (Zingiberaceae), to which it belongs, are tropical, but R. cautleyoides, like other species of Roscoea, grows in much colder mountainous regions. It is sometimes grown as an ornamental plant in gardens.

Magnolia dandyi is a species of plant in the family Magnoliaceae. It is native to north Vietnam, Laos and China where it occurs in the Yunnan and Guangxi provinces. It is threatened by habitat loss.

Deutzianthus is a genus of trees, from the family Euphorbiaceae. It was first described as a genus in 1924. They are found in Vietnam, southern China, and Sumatra. Species Deutzianthus thyrsiflorus (Airy Shaw) G.L.Webster - Sumatra Deutzianthus tonkinensis Gagnep. - Yunnan, Guangxi, Vietnam

Dalbergia boniana is a species of legume in the family Fabaceae. It is found only in Vietnam.

Bulbophyllum simondii is a flowering plant in the genus Orchidaceae.

Bulbophyllum semiteretifolium is a flowering plant in the family Orchidaceae.

Bulbophyllum laoticum is a flowering plant in the family Orchidaceae.

Bulbophyllum kontumense is a flowering plant in the family Orchidaceae that is endemic to Vietnam.

Blumeopsis is a genus of flowering plants in the family Asteraceae. Its size can range from 25–100 centimeters (9.8–39.4 inches). Blumeopsis is sometimes treated as monotypic, including only Blumeopsis flava. Some sources accept a second species, Blumeopsis falcata. Blumeopsis can also be used for medical purposes as it has been shown to help with cough, colds, and bronchial diseases. The genus is native to southern China, the Indian subcontinent, and Southeast Asia.

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Acer erythranthum is a species of maple, endemic to Vietnam where it grows on elevations of 500 metres (1,600 ft).

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Tridynamia is a genus of flowering plants belonging to the family Convolvulaceae. Its native range is Assam to China and Malaysian Peninsula. Species: Tridynamia bialata (Kerr) Staples Tridynamia megalantha (Merr.) Staples Tridynamia sinensis (Hemsl.) Staples Tridynamia spectabilis (Kurz) Parmar