Camchaya spinulifera H.Koyama, Acta Phytotax. Geobot. 35(1-3): 54. 1984.

Bunwong, Sukhonthip, Chantaranothai, Pranom & Keeley, Sterling C., 2014, Revisions and key to the Vernonieae (Compositae) of Thailand, PhytoKeys 37, pp. 25-101 : 55-56

Camchaya spinulifera H.Koyama, Acta Phytotax. Geobot. 35(1-3): 54. 1984.

Type.

Thailand, Mukdahan, Nikomkhamsoi district, Phu Moo forest park; H. Koyama, H.Terao & Th. Wongprasert T-30837 (holotype: KYO!, isotype: L!). Figs 6E-F .

Description.

Annual herbs, 40-100 cm tall. Stems erect, terete, inconspicuously ribbed, scabrous with uniseriate and T-shaped hairs. Leaves alternate, ovate to lanceolate, 4-10 by 1.5-4 cm, margin serrate, apex acute, base attenuate, chartaceous; both surfaces scabrous with whip-shaped hairs, cylindrical hairs, T-shaped hairs and capitate glands; lateral veins 5-13-paired; petioles up to 1 cm long. Capitulescences terminal and axillary, paniculate. Capitula campanulate or hemispherical, 10-15 mm long, pedunculate. Receptacle convex, 4.5-6.5 mm in diam., glabrous. Involucres hemispherical, in 8-9 series, 10-15 mm long, 10-20 mm in diam. Phyllaries imbricate, greenish with purple apex, margin with spines up to 10 mm long, outer surface arachnoid without glands; the outer lanceolate, apex spinose; the inner ones lanceolate to oblong, apex acuminate. Florets 130-220; corollas funnelform, purple, puberulous, glands capitate; corolla tubes 7.5-9 mm long; corolla lobes 2.5-3 mm long. Anthers ca. 2 mm long, apical appendage acute, base rounded. Styles purple, 8-11 mm long, branches 2-2.5 mm long. Achenes obovate, 1.3-1.5 mm long, glabrous, 10-ribbed. Pappus in one series of bristles, 1.5-3 mm long, present in some florets, deciduous.

Distribution.

Thailand: Nong Khai, Sakon Nakhon, Udon Thani, Mukdahan, Kalasin, Chaiyaphum, Ubon Ratchathani. Endemic.

Specimens examined.

Thailand, Sakon Nakhon, Phu Phan national park, 17°4.0'N, 103°58.0'E, 1 Oct 2007, S. Bunwong 332 (KKU, US); Phu Phan national park, 14 Dec 1982, Koyama, H.Terao & Th. Wongprasert T-31007 (L); Phu Phan national park, 14 Dec 1982, Koyama, H.Terao & Th. Wongprasert T-31054 (BKF); Phu Phan national park, 12 Nov 1984, G. Murata, C. Phengklai, S. Mitsuta, T. Yahara, H. Nagamasu & N. Nantasan T-50638 (BKF); Phu Phan national park, 12 Nov 1984, G. Murata, C. Phengklai, S. Mitsuta, T. Yahara, H. Nagamasu & N. Nantasan T-51352 (BKF); Phu Phan national park, 25 Nov 1962, P. Suvanakoses 1947 (BKF); Nong Khai, Phu Woa, 21 Oct 2007, S. Bunwong 336 (KKU, US); route number 212, 15 Dec 1982, Koyama, H.Terao & Th. Wongprasert T-31068 (BKF); Bung Kla, 8 Nov 1996, C. Niyomdham 4897 (BKF); Bung Kla, 17 Nov 1966, T. Smitinand 10097 (BKF, L); Udon Thani, 29 Sep 2007, S. Bunwong 327 (KKU, US); Mukdahan, Nikomkamsoi, Phu Moo, 11 Dec 1982, Koyama, H.Terao & Th. Wongprasert T-30837 (AAU, BKF); route number 2030,13 Dec 1982, Koyama, H.Terao & Th. Wongprasert T-30954 (BKF); Kalasin, Sahatsakhan, 20 Oct 1975, S. Sutheesorn 3500 (BK); Chaiyaphum, Pha Hin Ngam, 21 Nov 1992, S. Suddee 6 (BKF).

Diagnostic characters.

Camchaya spinulifera is recognized by having the longest marginal spines on their phyllaries of any species, and the lack of glands on the phyllaries.

Ecology.

Rocky area in dipterocarp forest, alt. 200-300 m; flowering September to December.

Vernacular name.

Phu Muang (พู่ม่วง), Up-Pa-Kud (อุปคุต).

Figures

Figure 6. Morphology of Vernonieae in Thailand 2. A Camchaya gracilis B Camchaya loloana C Camchaya loloana var. mukdahanensis D Camchaya pentagona E-F Camchaya spinulifera G Camchaya tenuiflora H-I Camchaya thailandica.