Volume 2 > Part 1 > Year 1970 > Page 20 > Oxalidaceae > Biophytum

4. Biophytum thorelianum Guillauminwfo-0000565549

Not. Syst. 1: 24. 1909; Bull, Mus. natn. Hist. nat., Paris 15: 127. 1909; in Fl. Gèn. I.-C. 1: 609. 1911; Craib, Fl. Siam. En. 1: 207. 1926; Knuth in Pflanzenr. 95: 413. 1930; Tardieu-Blot in Fl. Gèn. I.-C. Suppl.: 548. t. 65. f. 1–7. 1945.

Accepted Name : This is currently accepted.

Description : Erect, dwarf shrub, often sympodially branched, up to 30 cm. Leaves 8–16-jugate, rachis 3–8 cm; terminal leaflets as long as the preceding, elliptic- to obovate-oblong, 7–15 by 4–9 mm, ± symmetric; other leaflets elliptic to oblong, asymmetric, midrib excentric, from basiscopic corner; strigose, glabrescent. Inflorescences nearly sessile in tuft, puberulous and septate-glandular hairy. Peduncles up to 2 mm. Pedicles 4–6 mm. Sepals ovate-oblong to -lanceolate; 5 by 1–2 mm, acute to acuminate, ± half as long as the corolla, in fruit ± as long as the pedicel, ± as long as the fruit. Petals 8–9 by 2–3 mm, rounded, white to yellowish white. Fruit 4 by 4 mm, sparsely puberulous and minutely septate-glandular hairy on the ribs. Seeds 4 per cell, 1 by 1 mm, transversally tubercled and ridged.

Thailand : NORTH-EASTERN: Loei (Wang Saphung), Khon Kaen (Pha Nok Khao).

Distribution : Vietnam (type), Cambodia.

Ecology : Shaded, humid places, in woods, along rivers at low altitudes, up to 500 m.

Vernacular : Yup yop (ยุบยอบ).