Volume 5 > Part 2 > Year 1990 > Page 209 > Scrophulariaceae > Torenia

5. Torenia hirsutissima Bonatiwfo-0000458525

Bull. Soc. Bot. Fr. 55: 512. 1908; in Fl. Gén. I.-C. 4: 404. 1927; Kerr in Fl. Siam. En. 3(2): 71. 1954; T.Yamaz., J. Fac. Sci. Univ. Tokyo, Sect. 3, 13: 615. f. 15, e. 1985; in Fl. C.L.V. 21: 145. 1985. Fig. 50: 1.

Accepted Name : This is currently accepted.

Description : Stems laxly branched, diffuse, up to 60 cm long, with dense white long spreading hirsute hairs. Leaves chartaceous; petioles 4–8 mm, densely and spreadingly hirsute; blades deltoid-ovate or deltoid-lanceolate, 15–35 by 8–15 mm, acute at apex, truncate at base, minutely acute-serrate; white long-hirsute on both surfaces. Flowers solitary and axillary; pedicels 2–5 cm, with subdense white spreading hirsute hairs. Calyx tubular, 12–18 mm, 5-ribbed, spreadingly long-hirsute, bilabiate. Corolla yellow, 3–3.5 cm long; upper lip broadly orbicular, emarginate, 8–10 by 14–16 mm; flower lip 3-lobed, lobes orbicular, ca 8 by 8 mm. Anterior stamens each with a filiform spur ca 2 mm, arising slightly above the base. Capsule narrowly oblong, 10 by 3 mm. Seeds ellipsoidal, 0.6 by 0.45 mm, scrobiculate.

Thailand : NORTHERN: Phitsanulok (Phu Miang); NORTH-EASTERN: Loei (Phu Kradueng, Phu Luang), Chaiyaphum (Thung Kamang); SOUTH-EASTERN: Trat (Khao Kuap).

Distribution : Laos, Cambodia (type).

Ecology : Open grasslands, moist savannas on sandstone and marshes, 500–1,300 m alt.

Vernacular : Monthian thong (มณเฑียรทอง)(Central).