Kurziella gymnoclada (Collett & Hemsl.) H.Rob & Bunwong, Proc. Biol. Soc. Washington 123(2): 177. 2010.

Bunwong, Sukhonthip, Chantaranothai, Pranom & Keeley, Sterling C., 2014, Revisions and key to the Vernonieae (Compositae) of Thailand, PhytoKeys 37, pp. 25-101 : 78-79

Kurziella gymnoclada (Collett & Hemsl.) H.Rob & Bunwong, Proc. Biol. Soc. Washington 123(2): 177. 2010.

Vernonia gymnoclada Collett & Hemsl., J. Linn. Soc., Bot. 28: 70. 1890.

Vernonia juncea Hook.f., Fl. Br. Ind. 3: 231. 1881, nom. nud.

Kurziella gymnoclada Type. Myanmar, Meiktila, H. Collet 515 (holotype: K!). Fig. 9G .

Description.

Perennial herbs, up to 1 m tall. Stems erect, conspicuously ribbed, puberulous. Leaves 1-3 by 1-2 cm, obovate, margin serrate, apex obtuse or truncate, base cuneate, subcoriaceous, both surfaces scabrous with whip-shaped hairs and capitate glands, lateral veins 2-3-paired; petioles up to 5 mm long. Capitulescences terminal and axillary, spicate or solitary. Capitula campanulate, 10-13 mm long, subsessile or shortly pedunculate. Receptacle flat, 1.5-2 mm in diam. Involucres campanulate. Phyllaries imbricate, in 5-6 series, 8-10 mm long, 4-5 mm in diam., green or purple apically, margin piliferous, outer surface puberulous without glands; the outer and the middle ones ovate or lanceolate, acute; the inner ones lanceolate to oblong, apex acute. Florets 15-20; corollas funnelform, purple, glabrous, corolla tubes 8-10 mm long; corolla lobes 3-3.5 mm long. Anthers 2-2.5 mm long, apical appendage acute, base obtuse. Styles purple, 7-8 mm long, branches 2-2.5 mm long. Achenes 2-3 mm long, ca. 5-ribbed, covered with dense hairs. Pappus in 1 series of brisitles, 9-10 mm long.

Distribution.

Thailand: Kamphaeng Phet, Khon Kaen, Nakhon Ratchasima, Kanchanaburi, Ratchaburi, Phetchaburi, Prachuap Khiri Khan, Chai Nat, Saraburi, Bangkok. Myanmar.

Specimens examined.

Thailand, Khon Kaen, Phon district, 15°48.96'N, 102°35.91'E, 28 Feb 2008, S. Bunwong 391 (KKU, US); Nakhon Ratchasima, 21 Jan 1931, 21 Jan 1931, A.F.G. Kerr 19911 (AAU, BK, BM, E, K); Nakhon Ratchasima, 3 Mar 1958, Th. Sørensen, K. Larsen & B. Hansen 2166 (BKF, C, K); Kanchanaburi, 13 Mar 1926, A.F.G. Kerr 10618 (BK, BM, C, E, K); Kanchanaburi, 18 Jan 1929, Put 2273 (AAU, BK, BM, E, K); Kanchanaburi, 21 Dec 1970, T. Smitinand 11398 (BKF); Chai Nat, 8 Jan 1980, Put 2654 (BK, BM, E, L, K); Saraburi, Minam Sak, 3 May 1923, A.F.G. Kerr 7029 (AAU, BK, BM, E, K); Ratchaburi, Kao Tum Pha, 15 Mar 1965, S. Sutheesorn 479 (BK); Phetchaburi, Kao Ec San, 8 Mar 1965, S. Sutheesorn 478 (BK).

Diagnostic characters.

Kurziella gymnoclada is distinguished by a single row of persistent pappus, deciduous leaves and sessile or subsessile capitula in axillary leaves.

Ecology.

Dipterocarp forest, alt. 40-200 m; flowering November to March.

Vernacular name.

Yoong Pad Maa Mai (ยุ้งปัดแม่หม้าย).

Figures

Figure 9. Morphology of Vernonieae in Thailand 5. A-B Gymnanthemum extensum C Iodocephalopsis eberhardtii D Koyamasia calcarea E-F Koyamasia curtisii G Kurziella gymnoclada H Monosis parishii I Monosis volkameriifolia