e-Flora of Thailand
Volume 4 > Part 2 > Year 1985 > Page 172 > Leguminosae-Mimosoideae > Acacia
13. Acacia thailandica I.C.Nielsenwfo-0000199724
Adansonia, ser. 2, 19: 356. 1980; in Fl. C.L.V. 19: 57. Pl. 9, 1–8. 1981. Fig. 42: 6–12.
Accepted Name : Senegalia thailandica (I.C.Nielsen) Maslin, Seigler & Ebinger
Blumea 58: 42. 2013.
Description : A shrub with straggling branches or a woody climber; branchlets spiny, densely puberulous to tomentose, covered with dark glandular hairs, glabrescent. Stipules 1.2 by 1 mm, broadly ovate, acute, puberulous; leaves and panicles often found together on short shoots in the axils of old leaf scars. Leaves: rachis 3–8.7 cm; petiole 0.5–1.5 cm; gland 0.4–0.7 cm above the base, at or below the middle of the petiole; pinnae 8–11 pairs, 1.1–4 cm, glands between the junctions of the 4–6 distal pairs; leaflets 17–44 pairs per pinna, opposite, sessile, (2.5–)3–5.5 by (0.8–)1.3 mm, oblong; base asymmetrically truncate; apex acute and sometimes mucronate, slightly bent forwards; both surfaces glabrous but margins densely ciliate; main vein marginal at the base running submarginally but not parallel to the upper margin towards the apex, lateral veins prominent, anastomosing, reticulate. Inflorescence: peduncles panicled or solitary to paired in the upper leaf-axils. Flowers in heads, floral bracts 1 mm, spoon-shaped. Calyx 2 mm; tube glabrous; teeth 5, 0.5–1 mm, ovate, acute, irregular, faintly puberulous at the apex. Corolla 2.5–2.9 mm; tube glabrous; teeth 5, 1 mm, ovate, acute, glabrous. Ovary 1 mm, velutinous; stipe 1 mm. Pod ca 2 cm broad, slightly inflated, tightly curled, greenish-grey, chartaceous, glabrous, with prominulous veins and marks over the seeds; dehiscent? Seeds ca 6 by 4.5 mm, broadly ellipsoid, biconvex, brown, pleurogram ca 3 by 1 mm, oblong.
Thailand : NORTHERN: Nakhon Sawan; CENTRAL: Ang Thong (type: Put 2537, holotype -K, isotypes -C P); SOUTH-WESTERN: Kanchanaburi.
Distribution : Cambodia.
Ecology : In evergreen scrub and at edge of swamps, at low altitudes.