Flora of Southeast Asia

Pinus krempfii, or Krempf's pine, is a rare species of pine, endemic to the central highlands of Vietnam in the Da Lat–Nha Trang area. It is unusual in that it has flat needles. Because of this anomaly, it is put in its own subsection, the Krempfianae. In adult trees these needles are up to 4 mm (0.16 in) wide, "but much larger on juveniles". The tree is a rainforest emergent to 55 m (180 ft) in height and up to 2 m (6 ft 7 in) DBH.

Afgekia is a small genus of large perennial climbing shrubs native to Thailand in Asia, belonging to the family Fabaceae. They are reminiscent of the related genus Wisteria.

Kerriodoxa elegans, the white backed palm, is the only species of palm tree in the genus Kerriodoxa, in the family Arecaceae. It is an endemic species of Thailand, first discovered in the Khao Phra Thaew reserve on 11 March 1929 and described as a new genus and species in 1983. It is dioecious, with separate male and female plants. The genus name of Kerriodoxa is in honour of Arthur Francis George Kerr (1877–1942), an Irish medical doctor.

Saigon cinnamon (Cinnamomum loureiroi, also known as Vietnamese cinnamon or Vietnamese cassia and quế trà my, quế thanh, or " quế trà bồng" in Vietnam) is an evergreen tree indigenous to mainland Southeast Asia. Saigon cinnamon is more closely related to cassia (C. cassia) than to Ceylon cinnamon (C. verum), though in the same genus as both. Saigon cinnamon has 1–5% essential oil content and 25% cinnamaldehyde in essential oil. Consequently, among the species, Saigon cinnamon commands a relatively high price. The scientific name was originally spelled as Cinnamomum loureirii, but because the

Bulbophyllum frostii, commonly known as Frost's bulbophyllum or Dutchman's shoes is a species of orchid, In the wild it grows as an epiphyte, inhabiting evergreen seasonal lowland rainforests in Vietnam and more rarely in Thailand, including the Malay peninsula. It was more recently reported growing in the Yunnan province of China during a series of botanical surveys between 2017 and 2020. This plant is usually found at elevations of around 1500m above sea level.

Pueraria mirifica, also known as กวาวเครือ kwao krua (among other names), is a plant found in northern and northeastern Thailand and Myanmar. In Thailand, the plant is known as "kwao krua kao", the 'kao' meaning white which distinguishes Pueraria mirifica from other plants with tuberous roots also sharing the 'kwao krua' designation, such as Butea superba, commonly called kwao krua deng (red) and the 'black' and 'dull grey' kwao krua plants. The species was definitively identified as Pueraria mirifica in 1952. Dried and powdered, the tuberous root of Pueraria mirifica has a history of

Pterocarpus dalbergioides, the Andaman padauk, Andaman redwood or East Indian mahogany, is a species of flowering plant in the family Fabaceae. It is sometimes called "narra", but this is just a generic term used for any of several Pterocarpus species. It is native to the Andaman Islands.

Paphiopedilum godefroyae is a species of orchid endemic to peninsular Thailand, Vietnam and Malaysia. This species is found just above sea level on limestone cliffs. The flowers are around 9 cm across, creamy white to light green. They flower from December to July.

Paphiopedilum exul is a species of slipper orchid endemic to the Krabi region in peninsular Thailand. Its greenish yellow flowers appear from February to May. Various hybrids are cultivated involving P. exul.

Nepenthes thorelii is a tropical pitcher plant endemic to Indochina. Very little is known about N. thorelii and it is unlikely to have entered cultivation, although various other taxa are often mislabelled as this species in the plant trade. Prior to its rediscovery in 2011, N. thorelii was considered possibly extinct, both in the wild and in cultivation.

Nepenthes bokorensis is a tropical pitcher plant endemic to Cambodia. It is known from Mount Bokor (also Phnom Bokor or Bokor Hill) in the south of the country, and an as yet undetermined specimen suggests that it may also be present in other parts of the Dâmrei Mountains of Kampot Province. The specific epithet bokorensis refers to both Mount Bokor and Bokor National Park.

Nepenthes andamana is a tropical pitcher plant endemic to Phang Nga Province, Thailand, where it grows near sea level in coastal savannah and grassland. It is thought to be most closely related to N. suratensis. The specific epithet andamana refers to the Andaman Sea coast of Thailand.

Cycas collina is a species of cycad. It is found in the Mai Sơn area of Sơn La Province, Vietnam.

Cycas chevalieri is a species of cycad in the family Cycadaceae. It is native to central Vietnam, including in Nghe An Province. It may also occur in Laos.

Cycas aculeata is a species of cycad in the genus Cycas, native to Vietnam, where it is endemic to a single site on the south slopes of the Hai Van Pass. It has a short subterranean stem 15–18 cm diameter, which bears 6-23 leaves. The leaves are 1.8-2.5 m long, and pinnate, with 100-150 leaflets and several basal spines; they are glossy dark green, but covered in orange pubescence at first which soon wears off. The leaflets are 35–52 cm long and 13–19 mm wide, and the basal spines . The name derives from the Latin aculeatus, which translates as "prickly", indeed has short prominent spikes

Paphiopedilum vietnamense is a species of orchid found from Thái Nguyên Province in northern Vietnam. It was discovered in 1997 and it is endangered.

Paphiopedilum sukhakulii is a species of plant in the family Orchidaceae.

Nepenthes thai is a tropical pitcher plant endemic to peninsular Thailand. It grows on limestone hills at elevations of 500–600 m above sea level. Nepenthes thai has no known natural hybrids.

Nepenthes holdenii is a tropical pitcher plant from western Cambodia, where it grows at elevations of 600–800 m above sea level. The species was originally known from only two peaks in the Cardamom Mountains, but the discovery of a new population was reported in October 2011. Seeds were collected in 2014 and the species was successfully introduced into cultivation.

Dendrobium amabile is a species of flowering plant in the family Orchidaceae. This orchid is endemic to Vietnam.

Cycas elongata is a species of cycad in the family Cycadaceae. It is endemic to southern Vietnam.

Cycas brachycantha is a species of cycad in the genus Cycas, native to northern Vietnam where it is endemic to Bắc Kạn Province. It grows in often soil-free cracks and crevices of limestone crests and ridges under the canopy of evergreen forests. It is found in Ba Bể National Park. It has a short stem 9–10 cm diameter, often subterranean, or up to 1 m tall above ground, bearing 5-10 leaves. The leaves are 1.4-2.5 m long, slightly keeled to flat, very glossy dark green, pinnate, with 100-210 leaflets, each leaflet 20–25 cm long and 10–14 mm wide, angled forward at 70-85°; the leaf apex has a

Bulbophyllum longissimum is a species of orchid in the genus Bulbophyllum.

Trachycarpus oreophilus, also known as Thai mountain fan palm, is a plant species in the genus Trachycarpus. It is known from two distinct populations, one in northwest Thailand, the other in Manipur in northeastern India. The Manipur population was formerly considered a separate species. Trachycarpus oreophilus grows on steep mountain sides at elevations of 1,200–1,800 m (3,900–5,900 ft).

Phalaenopsis chibae is a species of orchid endemic to Vietnam.

Mangifera nicobarica is a species of plant in the family Anacardiaceae. It is endemic to the Nicobar Islands.

Magnolia sirindhorniae is a plant species in the genus Magnolia, family Magnoliaceae, described by Hans Peter Nooteboom and Piya Chalermglin. It is a magnolia species endemic to swamp forest of central Thailand in Tha Luang District, Lopburi Province. It was named in honor of Princess Maha Chakri Sirindhorn.

Cymbidium parishii is a species of orchid. It is found in Myanmar. In 1859, Charles Parish discovered it near Moulmein, but it was not named or published until 1872 and 1874, respectively, by Heinrich Gustav Reichenbach.

Cycas tropophylla, the Ha Long cycad, is a species of cycad endemic to Vietnam. It is found in Cát Bà National Park, Cát Hải District, Hải Phòng Province, Vietnam, as well as neighboring islands and on nearby limestone cliffs on the mainland.

Cycas tansachana is a species of cycad in Thailand. They are located to the northeast of Khong Khi Sua in Kaeng Khoi District, Saraburi Province, central Thailand. It is also found in Praphotisat Cave Temple Huai Haeng (ห้วยแห้ง) Subdistrict, Kaeng Khoi District. It is locally abundant, but has a highly restricted distribution.