Decaneuropsis garrettiana (Craib) H.Rob. & Skvarla, Proc. Biol. Soc. Washington 120(3): 365. 2007.

Bunwong, Sukhonthip, Chantaranothai, Pranom & Keeley, Sterling C., 2014, Revisions and key to the Vernonieae (Compositae) of Thailand, PhytoKeys 37, pp. 25-101 : 65

Decaneuropsis garrettiana (Craib) H.Rob. & Skvarla, Proc. Biol. Soc. Washington 120(3): 365. 2007.

Vernonia garrettiana Craib, Bull. Misc. Inform., Kew. 1915: 431. 1915.

Type.

Thailand, Lampang, Me Maw, A.F.G. Kerr 2341 (isotype: BM!, isotype: E!, holotype: K!). Fig. 7F .

Description.

Climbing or scandent shrubs, young branches terete, inconspicuously ribbed, puberulous. Leaves 9-25 by 4-15 cm, elliptic or obovate, margin entire, apex acute, base cuneate, chartaceous; upper surface puberulous without glands; lower surface puberulous with whip-shaped hairs, cylindrical hairs and capitate glands, lateral veins 4-11-paired; petioles up to 3.5 cm long. Capitulescences terminal and axillary, paniculate. Capitula campanulate, 12-15 mm long, pedunculate. Receptacle flat, 5-5.5 mm in diam., hairy. Involucres campanulate, in 5-6 series, 10-12 mm long, 8-8.5 mm in diam. Phyllaries imbricate, green, margin piliferous, outer surface puberulous without glands; the outer and the middle ones ovate or ovate-lanceolate, obtuse; the inner ones obovate-lanceolate, apex obtuse. Florets 20-30; corollas funnelform, dark purple, glandular; corolla tubes 7-8 mm long; corolla lobes ca. 2 mm long. Anthers 3-3.5 mm long, apical appendage acute, base acute. Styles white, 7-7.5 mm long, branches 3.5-4 mm long. Achenes subterete, 2.8-3 mm long, 10-ribbed, covered with dense hairs without glands. Pappus in 2 series of bristles, the inner ones 6.5-8.5 mm long, persistent.

Distribution.

Thailand: Chiang Mai, Chiang Rai, Lampang, Phrae, Kanchanaburi. Myanmar.

Specimens examined.

Thailand, Chiang Mai, Doi Chiangdao wildlife sanctuary, 19°24.11'N, 98°55.10'E, 20 Dec 2003, S. Bunwong 75 (KKU); Chiang Mai, Fang, 26 Jan 1973, S. Sutheesorn 2287 (BK); Doi Inthanon, 5 Dec 1969, C.F. van Beusekom & C. Phengklai 2316 (AAU, BKF, C, E, L, P); Muang District, 14 Feb 1990, R. Pooma 386 (BKF); Muang District, 20 Dec 1963, S. Phusamseang 66 (BKF, K, L); Muang District, 12 Dec 1997, W. Pongamornkul 23 (QBG); Muang District, 24 Dec 1997, W. Pongamornkul 48 (QBG); Muang District, 25 May 1995, W. Nanakorn et al. 5337 (QBG); Chiang Rai, Chiang kaung, 10 Jan 1922, H.B.G. Garrett 130 (BK, BKF, K); Thoeng, 23 Jan 1970, S. Sutheesorn 1639 (BK); Kanchanaburi, 15 Jan 1926, A.F.G. Kerr 10216 (BK, BM, K).

Diagnostic characters.

Decaneuropsis garrettiana is distinguished from Decaneuropsis cumingiana and Decaneuropsis eberhardtii by its obtuse phyllaries.

Ecology.

Mixed deciduous, evergreen or pine-oak forest, alt. 400-800 m; flowering November to February.

Vernacular name.

Krue Muang Doi (เครือม่วงดอย).

Figures

Figure 7. Morphology of Vernonieae in Thailand 3. A Cyanthillium cinereum B Cyanthillium montanum C Cyanthillium patulum D Decaneuropsis cumingiana E Decaneuropsis eberhardtii F Decaneuropsis garrettiana.