THAI FOREST BULLETIN (BOTANY) 36
rain forest, 12 Feb. 1997, Puudjaa 366 (BKF), Waeng, in evergreen forest, 3 July 1972, Nitrasirirak 230 (BKF), same locality, 5 July 1972, Nitrasirirak 236 (BKF), same locality, April 1972, Sangkhachand et al. 1059 (BKF, L), same locality, 1 April 1968, Phusomsang 416 (BKF, K, L), Sungei Kolok, evergreen forest, 200 m, 28 Feb. 1974, Larsen & Larsen 32729 (AAU, K, S, UPS)].
F.Argyreia penangiana (Choisy) Boerl., Handl. Fl. Ned. Ind. 2: 513. 1899; Hoogland, Blumea 7: 181. 1952; Ooststr. & Hoogland, Fl. Males. 1(4): 500. 1953.— Moorcroftia penangiana Choisy, Me´m. Soc. Phys. Geneve 6: 406. 1834.— Lettsomia penangiana (Choisy) Miq., Fl. Ned. Ind. 2: 592. 1857.
The first report of this peninsular Malaysian species in southern Thailand.
Thailand.— PENINSULAR: Nakhon Si Thammarat [Khao Luang National Park, Nop Phitum, along trail to Krung Ching waterfall, in evergreen forest, 200 m, 12 Feb. 2005, illiams et al. 1398 (A, BISH)].
Argyreia sikkimensis (C.B.Clarke) Ooststr., Blumea 7: 178. 1952; Mill, Fl. Bhutan 7(2):
— Lettsomia sikkimensis C.B.Clarke in Hook.f., Fl. Brit. India 4: 194. 1883.
First record in Thailand. The three Thai collections seen are all in fruit while the type material seen (images of syntypes from Khasia, India) has young flower buds or open corollas, nevertheless the leaf blade shape and indumentum, long peduncles, and sepal shape and indumentum are a very close match with the Thai specimens.
Thailand.— NORTHERN: Chiang Mai [Pong Pho, 12 km N of Doi Chiang Dao, 1200 m, 30 July 1968, Larsen et al. 2835 (AAU)]; Nan [Amphoe Pua, Phu Kha National Park, near summit in hill evergreen forest, 1500–1700 m, 21 Nov. 1993, Larsen et al. 44681 (AAU, 2 sheets), Doi Phu Kha, ca 70 km NE of Nan, 1500–1600 m, 13 Dec. 1990, Larsen et al. 41956 (AAU, BKF)].
H.Argyreia sphaerocephala (Prain) Hoogland, Blumea 7: 183. 1952; Ooststr. & Hoogland, Fl. Males. 1(4): 503. 1953.— Lettsomia sphaerocephala Prain, J. Asiat. Soc. Bengal 73(2): 19. 1904.
This is the first report of A. sphaerocephala in Thailand. It evidently flowers while leafless and the long, whip-like peduncles bearing the capitate inflorescences develop from leaf axils on older woody branches (cauliflorous). The large red-purple bracts initially form a spherical head from which the tubular bright red flowers protrude one by one. These colorful bracts persist in fruit and eventually reflex to expose the ripe lavender berries. This is a very showy species that deserves to be cultivated.
Thailand.— PENINSULAR: Songkhla [Ton Nga Chang Wildlife Sanctuary, dry evergreen forest, 250 m, 17Aug. 1995, Larsen et al. 45739 (AAU)]; Narathiwat [Bala-Hala, Waeng, in tropical rain forest, 24 Jan. 1998, Puudjaa 460 (BKF), same locality, 300 m, 29 Nov. 1997, Niyomdham 5279 (BKF, K), same locality, on hill slope in evergreen forest,Apr. 1968, Phusomsaeng 428 (L), Bala-Hala, without locality, 4 Oct. 1999, Niyomdham et al. 5910 (BKF)].