Gurcharan ji ... these are very useful keys. Thank you very much. Regards. Dinesh.
On Wed, Dec 5, 2012 at 10:17 AM, Gurcharan Singh <[email protected]> wrote: > Although not given in the original key of Acmella Monograph by Jansen, but > in the description is mentioned that heads of Acmella calva are mostly > discoid but may be rarely radiate. I have as such modified the key for > Indian species to accomodate this. This is also available on our website: > > > https://sites.google.com/site/efloraofindia/species/a---l/ar/asteraceae/acmella > > > 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* > > > > -- > 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://www.gurcharanfamily.com/ > http://people.du.ac.in/~singhg45/ > > On Thu, Jan 12, 2012 at 3:54 AM, Giby Kuriakose > <[email protected]>wrote: > >> 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 >> > > > > -- > > > > --
