Camchaya kampotensis Gagnep., Notul. Syst. 4: 14. 1920.

Bunwong, Sukhonthip, Chantaranothai, Pranom & Keeley, Sterling C., 2014, Revisions and key to the Vernonieae (Compositae) of Thailand, PhytoKeys 37, pp. 25-101 : 50-52

Camchaya kampotensis Gagnep., Notul. Syst. 4: 14. 1920.

Type.

Myanmar, Kampot, Geoffray 331 (holotype: P!).

Description.

Annual herbs 30-80 cm tall. Stems erect, terete, inconspicuously ribbed, pubescent with T-shaped hairs and glands. Leaves lanceolate, 7-25 by 5-9 cm, margin serrate, apex acute, base attenuate, chartaceous; both surfaces puberulous glandular; petioles up to 7 mm long. Capitulescences terminal and axillary, paniculate or solitary. Capitula campanulate, 10-15 mm long, pedunculate. Involucres campanulate, herbaceous, in 6-7 series, 9-12 mm long. Phyllaries imbricate, green or light purple, margin with spines up to 5 mm long, outer surface puberulous, glands capitate; the outer and the inner ones lanceolate, apex acuminate; the inner ones lanceolate or linear-oblong, apex acute. Corollas funnelform, purple, puberulous, glands capitate. Anthers ca. 2 mm long, apical appendage acute, base rounded. Styles purple. Achenes obovate, 2.5-3 mm long, glabrous, 10-ribbed. Pappus in 1 series of deciduous bristles or lacking.

Distribution.

Thailand: Ubon Ratchathani, Saraburi, Trat, Chanthaburi. Myanmar.

Specimens examined.

Thailand. Trat, Kao Kuap, 12°20.0'N, 102°25.0'E, 26 Nov 1929, A.F.G. Kerr 17783 (BK, E, K, P); Ubon Ratchathani, Khong Chiam, T. Santisuk 526 (BKF); Saraburi, Phiang, 30 Aug 1995, J.F. Maxwell 99-624 (CMU). Myanmar. Poporkvil, 4 Dec 1964, T. Kira, K. Hozumi, K. Yoda & S. Kokawa 102 (BKF); Bokor, Kampot, 20 Dec 1965, J.E.Vidal 4766 (L); Kampot, M. Martin 769 (L).

Diagnostic characters.

Camchaya kampotensis can be recognized by its acute to broadly acuminate phyllaries and its large achenes.

Ecology.

Evergreen forest, alt. 700-900 m; flowering December.

Vernacular name.

Nin La Pad (นิลปัทน์).