Piyakaset Suksathan

Sirindhornia is a genus of flowering plants in the family Orchidaceae native to China and Indochina. It contains three known species. Sirindhornia mirabilis H.A.Pedersen & Suksathan - Thailand Sirindhornia monophylla (Collett & Hemsl.) H.A.Pedersen & Suksathan - Yunnan, Thailand, Myanmar Sirindhornia pulchella H.A.Pedersen & Indham. - Thailand

Dracaena kaweesakii (Kaweesak's dragon tree; Thai: Chan nuu or Chan pha krai) is a species of dragon tree. It can reach 12 metres (39 ft) in both height and crown diameter. It is only found growing atop the limestone mountains in the Loei and the Lop Buri Provinces of Thailand.

Utricularia spinomarginata is a terrestrial lithophytic carnivorous plant that belongs to the genus Utricularia. It is endemic to the northern Thailand province of Phitsanulok on Phu Soi Dao, where it is only known from the type locality. It grows on wet cliffs at altitudes around 2,000 m (6,562 ft). Utricularia spinomarginata is easily distinguished from other members of section Phyllaria by its deeply dissected yellow-white to pink-white 5-lobed corollas and the marginal spine-like hairs on the obovoid seeds. It has been found growing in the presence of U. phusoidaoensis. It was first

Utricularia phusoidaoensis is a terrestrial lithophytic carnivorous plant that belongs to the genus Utricularia. It is endemic to the northern Thailand province of Phitsanulok on Phu Soi Dao, where it is only known from the type locality. It grows on wet cliffs at altitudes around 2,000 m (6,562 ft). It is related to U. garrettii, another species endemic to Thailand that shares a similar seed morphology. Utricularia phusoidaoensis is easily distinguished by its purple 4-6-lobed corolla, reniform leaves, and the staghorn-like trap appendages. It has been found growing in the presence of U.

Utricularia inthanonensis is a terrestrial lithophytic carnivorous plant that belongs to the genus Utricularia. It is endemic to northern Thailand in Doi Inthanon National Park where it is only known from the type locality. It grows on moist granite rocks at altitudes around 1,650 m (5,413 ft). It is closely related to U. garrettii, another species endemic to Thailand, and differs from it in corolla, seed, and bladder morphology. Utricularia inthanonensis can also be found growing with U. striatula. It was first formally described by Piyakaset Suksathan (of the Queen Sirikit Botanic Garden)

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Myanmaranthus is a genus of flowering plants in the family Marantaceae. It includes a single species, Myanmaranthus roseiflorus, which endemic to Myanmar and known only from a single location in Kachin State. It is an herbaceous plant up to 2.5 meters tall which grows from a rhizome, with pink flowers. The plant was collected in the buffer zone of Hkakaborazi National Park, growing in a disturbed roadside area through primary subtropical moist evergreen forest at 568 metres elevation. The genus and species were described in 2022. Myanmaranthus is most closely related to genus Phrynium, but

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Bulbophyllum physometrum is a species of epiphytic orchid in the genus Bulbophyllum from Thailand. It is the only species in Bulbophyllum section Physometra

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