Acilepis sutepensis (Kerr) H.Rob. & Skvarla, Proc. Biol. Soc. Washington 122(2): 144. 2009.

Bunwong, Sukhonthip, Chantaranothai, Pranom & Keeley, Sterling C., 2014, Revisions and key to the Vernonieae (Compositae) of Thailand, PhytoKeys 37, pp. 25-101 : 47-48

Acilepis sutepensis (Kerr) H.Rob. & Skvarla, Proc. Biol. Soc. Washington 122(2): 144. 2009.

Vernonia sutepensis Kerr, Bull. Misc. Inform., Kew. 1935: 329. 1935.

Type.

Thailand, Chiang Mai, Doi Sutep, A.F.G. Kerr 3561 (holotype: K!).

Description.

Perennial herbs, 60-150 cm tall. Stems erect, conspicuously ribbed, villose. Leaves rosulate, 10-14 by 4-7 cm, ovate-lanceolate or elliptic, margin serrate, apex acuminate, base cuneate or acuminate, subcoriaceous; both surfaces scabrous with whip-shaped hairs and capitate glands, lateral veins 9-11-paired; petioles up to 10 mm long. Capitulescences terminal and axillary, paniculate. Capitula campanulate, 10-15 mm long, pedunculate. Receptacle flat, 1.5-3 mm in diam., glabrous. Involucres narrowly campanulate, in 5-6 series, 8-10 mm long, 3-4 mm in diam., herbaceous. Phyllaries light green or purple apically, margin piliferous, outer surface sparsely arachnoid with capitate glands; the outer and the middle ones ovate or lanceolate, apex apiculate or aristate; the inner ones ovate-lanceolate to oblong, apex apiculate. Florets 13-20; corollas funnelform, purple, glandular; corolla tubes 7-8 mm long; corolla lobes 3-4 mm long. Anthers 3.5-4 mm long, apical appendage acute, base obtuse. Styles purple, 7-9 mm long, branches 3-3.5 mm long. Achenes subterete, 2-3.5 mm long, 10-ribbed, pubescent with twin hairs and capitate glands. Pappus bristles, the inner ones 8-9 mm long.

Distribution.

Thailand: Chiang Mai, Chiang Rai, Lamphun, Lampang, Nan. Endemic.

Specimens examined.

Thailand, Chiang Mai, Doi Sutep Pui national park, 18°48.39'N, 98°54.90'E, 9 Dec 2007, S. Bunwong 361 (KKU, US); Doi Sutep Pui national park, 14 Feb 1988, J.F.Maxwell 88-182 (AAU, CMU, BKF, L); Doi Sutep Pui national park, 22 Feb 1987, C. Niyomdham &R. Kubat 1347 (AAU, BKF, C, E, K, L); Doi Sutep Pui national park, 24 Mar 1965, C.H. & B. Sangkachand 287 (BKF); Doi Sutep Pui national park, 20 Mar 1951, T. Smitinand & P. Suvarnakoset 152 (BKF); Doi Sutep Pui national park, 13 Feb 1958, Th. Sørensen, K. Larsen & B. Hansen 6903 (BKF, C, K); Doi Chiangdao, 2 Mar 1974, T. Koyama, C. Phengklai, C. Niyomdham, H. Okada & P.J. O’Connor 15599 (AAU, BKF); Doi Chiangdao, 1 Mar 1995, J.F.Maxwell 95-168 (BKF, CMU, L); Doi Chiangdao, 19 Feb 1997, J.F.Maxwell 97-157 (CMU, L); Chiang Rai, Wieng Pa Pao, 30 Dec 1993, J.F.Maxwell 97-1540; Nan, Doi Phu Kha national park, 28 Feb 2002, P. Srisanga, S. Sasirat, W. Pongamornkul, S. Sukiam & P. Panyachan 2477 (QBG).

Diagnostic characters.

Acilepis sutepensis is distinguished from Acilepis pseudosutepensis by having larger capitula and sparse hairs on the phyllaries.

Ecology.

Hill evergreen or pine-oak forest, 1100-1500 m; flowering November to March.

Vernacular name.

Mu Nin (มุนิน).