Elephantopus scaber var. penicillatus Gagnep., Fl. Indo-Chine [M.H. Lecomte et al.] 3: 503. 1924.
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https://dx.doi.org/10.3897/phytokeys.37.6499 |
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https://treatment.plazi.org/id/3B22DF55-7A05-586D-A1A9-D058652473A3 |
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Elephantopus scaber var. penicillatus Gagnep., Fl. Indo-Chine [M.H. Lecomte et al.] 3: 503. 1924. |
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Elephantopus scaber var. penicillatus Gagnep., Fl. Indo-Chine [M.H. Lecomte et al.] 3: 503. 1924.
Type.
Laos, Chedom, Thorel 1407 (holotype: K!). Fig. 8D View Figure 8 .
Description.
Perennial herbs, 40-100 cm tall. Stems lacking except for inflorescence which is scapose, erect, terete, inconspicuously ribbed and pilose-villose. Leaves in a rosette at base of scape, 6-20 by 6-10 cm, obovate, obovate-lanceolate, elliptic, margin crenate to serrate, apex obtuse, base attenuate, subcoriaceous; upper surface sparsely pilose, without glands; lower surface densely pilose, with filiform cylindrical hairs and capitate glands; lateral veins 7-16-paired; petioles up to 6 cm long. Capitulescences terminal, scapose. Foliose bracts 3, deltoid. Capitula 7-9 mm long. Receptacle flat, ca. 1 mm in diam., glabrous. Involucres tubular, 6.5-8 mm long, 3-4 mm in diam. Phyllaries distichous, decussate, margin entire, outer surface puberulous, glands capitate; the outer ovate-lanceolate, apex acuminate; the inner ones lanceolate or oblong, apex acuminate. Florets 4; corollas salverform, white or purple, zygomorphic, glabrous or rarely hairy; corolla tubes 4-6 mm long; corolla lobes 2.5-3.5 mm long. Anthers ca. 2 mm long, apical appendage acute, base rounded. Styles purple, 6-8 mm long, branches ca. 1 mm long. Achenes 2-2.5 mm long, pubescent with a dense cover of twin hairs, without glands, 10-ribbed. Pappus of 5 bristles ca. 3 mm long, in one series, bristles with dilated bases.
Distribution.
Thailand: Loei, Nong Khai, Sakon Nakhon, Nakhon Phanom, Nakhon Ratchasima, Ubon Ratchathani, Chon Buri. Laos, Vietnam.
Specimens examined.
Thailand. Udon Thani, Ban Phue district, Phu Phrabat historical park, 17°43.84'N, 102°29.65'E, 29 Sep 2007, S. Bunwong 326 (KKU, USLoei, Phu Kra Dung, 17 Aug 1989, Din 174 (BKF); Phu Kra Dung, 22 Oct 1990, Dee 20 (BKF); Nong Khai, Sang Khom, 16 Dec 1982, H. Koyama, H. Terao & Th. Wongprasert T-31139 (BKF); Sakon Nakhon, Phu Phan national park, 5 Oct 2007, S. Bunwong 333 (KKU, US); Phu Phan national park, 13 Nov 1984, G. Murata, C. Phengklai, S. Mitsuta, T. Yahara, H. Nagamasu & N. Nantasan T-50689 (BKF); Nakhon Phanom, 14 Dec 1982, H. Koyama, H. Terao & Th. Wongprasert T-31019 (BKF); Ubon Ratchathani, Route number 2222, 27 Oct 2007, S. Bunwong 345 (KKU, US); Kalasin, Sahatsakhan, 22 Oct 1975, B. Sangkhachand & S. Sutheesorn 3528 (BK); Nakhon Ratchasima, Bau Yai, 31 Oct 1931, Put 4216 (BM, BK, K, L); Chon Buri, Khao Khiew, 19 Oct 1975, J.F. Maxwell 75-1040 (AAU, BK, BKF).
Diagnostic characters.
Elephantopus scaber var. penicillatus differs from the typical variety in having large capitula and whitish pilose-tomentose leaf surface and involucres.
Ecology.
Dipterocarp or dry evergreen forest, alt. 100-400 m; flowering August to January.
Vernacular name.
Doo Mai Ru Lom (โด่ไม่รู้ล้ม), Kee Fai Nok Khum (ขี้ไฟนกคุ้ม).
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.
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