Very useful and easy key Thank you sir for the same. Thanks and Regards Giby
On 16 October 2011 20:13, Gurcharan Singh <[email protected]> wrote: > *Blainvillea acmella* (Linnaeus) Philipson, Blumea 6 350 1950. > syn: *Verbesina* *acmella* L.; *Blainvillea alba* Edgew.; *Blainvillea > platyphylla* DC > > Roughly hairy stiff erect herb; lower leaves opposite, upper alternate, > ovate to deltate, up to 7 cm long, toothed; heads radiate, 8-12 mm in diam; > phyllaries few, outer leaflike; ray usually white, 2-3 lobed, disc > 5-merous; achenes 3-angled, inner flattened; pappus of 2-5 unequal > bristles. > > Photographed from near Dakpathar on way to Chakrata. > > Perhaps no other binomial has been so confused as Spilanthes acmella > > The name Spilanthes acmella is based on Verbesina acmella L. The > combination under Spilanthes appeared in Syst. Veg., ed. 13" 610 1774. > Till recently the combination was attributed to Murray in many reputed > books, Floras and databases (The Plant List, eFlora publications,etc.) > but as turns out Murray was only the editor of this publication and > Linnaeus the author of this combination, which should correctly be cited as > Spilanthes acmella (L.) L. Flora of British India recognises four varieties > under this: var acmella proper, var. calva, var. oleracea and var. > paniculata. Interestingly Koster and Philipson (1950) discovered that the > Verbesina acmella L., actually belongs to Blainvillea and should be better > known as Blainvillea acmella (L.) Philipson. The other names stay under > newly recognised genus Acmella and none (Indian species) under Spilanthes. > Incidently also the Blainvillea acmella (L.) Philipson includes another > species described in Indian Floras as Blainvillea platyphylla DC. The > species originally described as Spilanthes may accordingly include > following within Indian boundaries: > > *Blainvillea acmella* (L.) Philipson (syn: *Verbesina acmella* L.; *Spilanthes > acmella* (L.) L.; *Blainvillea latifolia* (L.f.) DC) > > *Acmella calva* (DC) R. K. Jensen (syn: *Spilanthes* *acmella* var. *calva > * (DC.) Clarke ex Hooker f.; *Spilanthes* *javanica* Sch.Bip. ex Miq.) > > *Acmella ciliata* (Kunth) Cass. (syn: *Spilanthes ciliata* Kunth.) > > *Acmella oleracea* (L.) R. K. Jensen (syn: *Spilanthes* *acmella* var. * > oleracea* (L.) C.B.Clarke ex Hook.f.; *Spilanthes oleracea* L.) > > *Acmella paniculata* (Wall. ex DC) R. K. Jensen (syn: *Spilanthes* * > acmella* var. *paniculata* (Wall. ex DC.) C.B. Clarke ex Hook. f.; * > Spilanthes* *paniculata* Wall. ex DC. > > *Acmella radicans* (Jacq.) R. K. Jensen var. *radicans *(syn: Spilanthes > radicans Jacq.) > > The following key can help differentiating species > > 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; 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............................................................................ > *Acmella uliginosa* > > I will be uploading Blainvillea acmella, Acmella ciliata, Acmella ciliata, > A. uliginosa and A. oleracea > > Other friends may try to upload Acmella calva, Acmella paniculata and > Acmella rdicans, which are available especially in Mysore and other parts > of Karnataka > > I am uploading this key in the website also for convenience. > > > > -- > Dr. Gurcharan Singh > Retired Associate Professor > SGTB Khalsa College, University of Delhi, Delhi-110007 > Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018. > Phone: 011-25518297 Mob: 9810359089 > http://people.du.ac.in/~singhg45/ > > -- GIBY KURIAKOSE PhD Ashoka Trust for Research in Ecology and the Environment (ATREE), Royal Enclave, Jakkur Post, Srirampura Bangalore- 560064 India Phone - +91 9448714856 (Mobile) visit my pictures @ http://www.flickr.com/photos/giby
