The following key can help differentiating species in India of species earlier treated under Spilanthes 1a. Heads with white ray florets, achenes 3-angled............................................................. Blainvillea acmella 1b. Heads discoid or with yellow ray florets, achenes flattened............................................(2) 2a. Heads discoid..................................................................................................................(3) 2b. Heads radiate, ray florets very small, achenes ciliate, pappus of 2-3 bristles.................(7) 3a. Corolla white, greenish white or with purple tinge, 4-merous, pappus of 2-3 bristles......Acmella radicans var. radicans 3b. Corolla pale yellow, yellow or orange yellow...................................................................(4) 4a. Pappus absent; stems decumbent, rooting at nodes; leaves ovate, ahenes 1.7-2.2 mm, glabrous, if sparsely hairy then hairs hooked ....................................................................Acmella calva 4b. Pappus of 2-3 bristles, achenes hairy, hairs straight, stems erect without nodal roots.....(5) 5a. Mature achenes with cork-like margin; surface tuberculate...............................................Acmella paniculata 5b. Mature achenes without cork-like margin; surface not tuberculate....................................(6) 6a. Corolla (disc floret) 4-merous, phyllaries 5-6, uniseriate, heads 5.8-8 mm high, 4-6 mm diam.,receptacle 3-6 mm high...............................................................................Acmella uliginosa 6b. Corolla 5-merous, phyllaries 15-18, triseriate, heads 8-23 mm high, 6-17 mm diam., receptacle 6-21 mm high, leaves ovate-deltate..................................................................Acmella oleracea 7a. Mature achenes with evident cork-like margin; disc corolla 5-merous; heads ovoid; leaves broadly ovate with rounded to cordate base; phyllaries 7-10, biseriate; heads 6-10 mm high, 6-9 mm in diam, receptacle 4-8 mm high.........................................Acmella ciliata 7b. Mature achenes without cork-like margin; leaf base cuneate............................................(8) 8a.. Disc corolla 4-merous, heads cone-shaped; leaves elliptic to narrowly ovate, cuneate at base; phyllaries 5-6, heads 5.8-8 mm high, 4-6 mm diam. receptacle 3-6 mm high; achenes 1.2-1.8 mm long, ciliate with straight hairs; pappus of two unequal or subequal bristles, one up to 0.7 mm long second up to 0.5 mm long............ .................................................................................................Acmella uliginosa 8b. Disc corolla 5-merous; phyllaries 8-11, biseriate; heads 7.5-11.5 mm high, 6-8.5 mm diam, receptacle 5-8.5 mm high; achenes ahenes 1.7-2.2 mm, glabrous, if sparsely hairy then hairs hooked; pappus absent............................................................................Acmella calva Fwd: completed insertion of images of identified Acmella species : 1 post by 1 author. Acmella page with images of species in efloraofindia : 1 post by 1 author. Pl. go through Acmella page with images of species (mainly done by Bhagyashri Ranade ji) in efloraofindia. If you find any mis-identification, pl. let us know. If anybody can send images of other species of this genera (for incorporation in the website), if any, it will be really nice. Also, if anybody is interested to take up the activity of inserting images on efloraofindia pages from efloraofindia posts, pl. let us know. |
# Species- Seed plants (families) > A---L (families & genera) > Ar > Asteraceae (Compositae) > Asteroideae > Heliantheae >
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