Botanical Survey of India | Flora of India

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Adenostemma lavenia (L.) Kuntze, Rev. Gen. Pl. 1: 304. 1891. Verbesina lavenia L., Sp. Pl. 902. 1753.

Herbs, annual or perennial; stems decumbent-ascending, often rooting at nodes, glabrous below, pubescent in the upper part. Leaves variously shaped, acute or obtuse, entire or serrate, up to 25 x 14 cm, faintly to prominently veined, petiolate or sessile. Heads corymbose. Involucral bracts sub 2-seriate, free or sometimes connate at base, glabrous or hairy on back, ciliate on margins. Achenes smooth, muricale or tuberculate. Pappus hairs 4 - 5, ending in a knob.

Very variable species. Following varietles are recognised from India (Panigrahi 1975).


1a. Achenes smooth 2
b. Achenes lightly or densely muricate or tuberculate 3
2a. Leaves prominently reticulate beneath; involucral bracts hairy on back 1.7. reticulatum
b. Leaves not prominently reticulate beneath; involucral bracts smooth on back 1.5. madurense
3a. Achenes only lightly muricate 1.1. angustifolium
b. Achenes densely muricate or tuberculate 4
4a. Leave. alternate, upper sessile; involucral bracts not ciliate on the margins 1.2. elatum
b. Leaves usually opposite, petioled; involucral bracts ciliate on margins 5
5a. Leaves lanceolate, oblong-obovate or elliptic-ovate 6
b. Leaves broadly ovate or rhombic-parabolic 7
6a. Leaves lanceolate, oblong-ovate, acute; corolla 3 mm long; limb densely hairy 1.4. lavenia
b. Leaves elliptic-ovate, obtuse; corolla ca 1.8 mm long; limb smooth 1.6. microcephalum
7a. Leaves broadly ovate, herbaceous; achenes more densely muricate in the upper half than in the lower 1.3. latifolium
b. Leaves rhombic parabolic, coriaceous; achenes densely muricate throughout 1.8. rugosum

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