Botanical Survey of India | Flora of India

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Trigonostemon semperflorens (Roxb.) Müll.Arg. in DC., Prodr. 15(2): 1110. 1866; Hook.f., Fl. Brit. India 5: 397. 1887. Clutia semperflorens Roxb., Fl. Ind., ed. Carey 3: 730. 1832.


Kh.: Diang-soh-kot, Dieng-soh-pyda.

Shrubs (often bushy) or trees, 1.5 - 5 m tall; young shoots densely ochraceous-hirsute; branchlets ochraceous-pilose or hirsute, glabrous in age. Leaves crowded towards tips of branches, alternate and very often pseudo-verticillate and separated by bare internodes, narrowly obovate to cuneate-oblanceolate or panduriform, narrowly cordate (often rounded) at extreme base, serrulate to subentire along margins, caudate-acuminate at apex, (6 -) 10 - 30 x (2 -) 3 - 8 cm, membranous to chartaceous, glabrous above, sparsely ochraceous-hirsute or pilose (on major nerves) to glabrous beneath, penninerved; lateral nerves 9 - 20 pairs; petioles 1 - 8 mm long. Male inflorescences axillary or cauliflorous, glomerate-fascicled; pedicels short; petals deep purple; disc glands free; stamens 3 with connate filaments. Female inflorescences axillary, also in the axils of fallen leaves, abbreviated, sub-fasciculate to solitary or racemiform cymes, up to 3.5 cm long; peduncles up to 2 cm long or absent; pedicels 2 – 5 mm long; sepals elliptic, oblong, ovate or triangular, 3.5 - 8 x 1 - 3 mm; petals spathulate-obovate, 3 - 4 x 1.8 - 3 mm, deep purple; disc glands squarish, ca 0.6 x 0.5 mm; ovary subglobose, 1.5 - 2 x 2 - 3 mm, tomentose or densely hirsute; styles bifid to base, 1 - 1.5 mm long. Fruits subglobose, 9 - 12 x 13 - 15 mm, pilose or hirsute; seeds suborbicular, ca 7 mm long, ca 6 mm in diam., trigonous, marbled.

Fl. & Fr. Apr. - May, Nov. - Jan. (perhaps round the year).

Distrib. India: Primary evergreen forests, up to 1550 m altitude. Assam and Meghalaya.

Bangladesh.




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