Acilepis attenuata (DC.) H.Rob. & Skvarla, Proc. Biol. Soc. Washington 122(2): 137. 2009.
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publication ID |
https://dx.doi.org/10.3897/phytokeys.37.6499 |
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persistent identifier |
https://treatment.plazi.org/id/9BE76030-7E96-5DD5-AA68-1261133462F6 |
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treatment provided by |
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scientific name |
Acilepis attenuata (DC.) H.Rob. & Skvarla, Proc. Biol. Soc. Washington 122(2): 137. 2009. |
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Acilepis attenuata (DC.) H.Rob. & Skvarla, Proc. Biol. Soc. Washington 122(2): 137. 2009.
Conyza attenuata Wall., Numer. List [Wallich] no. 3020, comp. no. 130, nom. nud.
Vernonia attenuata DC., Prodr. 5: 33. 1836.
Type.
India orientalis, Wallich 3020 (holotype: K!). Fig. 5A View Figure 5 .
Description.
Perennial herbs 50-120 cm tall. Stems erect, conspicuously ribbed, puberulous. Leaves simple, rosulate, 9-22 by 2-8 cm, obovate to obovate-lanceolate or elliptic, margin entire or serrate, apex obtuse or acute, base cuneate or attenuate, subcoriaceous, upper surface scabrous and lacking glands; lower surface scabrous with whip-shaped hairs and capitate glands; lateral veins 5-11-paired; petioles up to 5 mm long. Capitulescences terminal, scapose. Capitula campanulate, 15-18 mm long, pedunculate. Receptacle flat, 6-8 mm in diam., glabrous. Involucres campanulate, in 6-7 series, 7-11 mm long, herbaceous. Phyllaries imbricate, green with purple apex, margin piliferous, outer surface arachnoid without glands; the outer and the middle ones ovate, apex apiculate, upper half reflexed; the inner ones ovate-lanceolate to oblong, apex acuminate. Florets 40-65; corollas funnelform, purple, puberulous glandular; corolla tubes 6-8.5 mm long; corolla lobes 2-3 mm long. Anthers 2.5-3 mm long, apical appendage acute, base obtuse. Styles purple, 7-10 mm long, branches 2.5-4 mm long. Achenes subterete, 2.5-3 mm long, 10-ribbed, pubescent with twin hairs and capitate glands. Pappus bristles, the inner ones 7-7.5 mm long.
Distribution.
Thailand: Mae Hong Son, Chiang Mai, Nong Bua Lum Phu, Khon Kaen, Udon Thani, Sakon Nakhon, Kanchanaburi, Satun. Myanmar.
Specimens examined.
Thailand. Loei: Phu Kra Dung national park, 16°52.28'N, 101°50.74'E, 23 Dec 2007, S. Bunwong 373 (KKU, US); Udon Thani, Phu Pra Bath historical park, 17°41.30'N, 102°28.40'E, 2 Nov 2007, S. Bunwong 347 (KKU, US); Khon Kaen, Phu Wieng national park, 15 Nov 2007, S. Bunwong 351 (KKU, US); Sakon Nakhon, Phu Phan national park, 24 Nov 2007, S. Bunwong 354 (KKU, US); Satun, Adang Island, 21 Oct 1979, G. Congdon 62 (AAU, PSU); Mae Hong Son, Pang Ma Pha, 25 Feb 1968, B. Hansen & T. Smitinand 12722 (C, E, K, L, P); Kanchanaburi, Si Sa Wat, 5 Jan 1926, A.F.G. Kerr 10147 (BK, BM, K).
Ecology.
Dipterocarp or dry evergreen forest, alt. 50-780 m; flowering October to February.
Diagnostic characters.
Leaves rosulate and capitulescences terminal with scapose.
Vernacular name.
Kra Dum Muang (กระดุมม่วง).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.