Camchaya tenuiflora
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Ordo: Asterales
Familia: Asteraceae
Genus: Camchaya
Name
Camchaya tenuiflora Kerr, Bull. Misc. Inform., Kew. 1935: 327. 1935. – Wikispecies link – IPNI link – Pensoft Profile
Type
Thailand, Bangkok, A.F.G. Kerr 20563 (holotype: BK!, isotype: E!, isotype: K!, isotype: L!, isotype: P!). Fig. 6G.
Description
Annual herbs, 20–70 cm tall. Stems erect, terete, inconspicuously ribbed, scabrous with uniseriate and T-shaped hairs. Leaves alternate, ovate or lanceolate, 3–10 by 1.5–2.5 cm, margin serrate, apex acute, base attenuate, chartaceous; both surfaces scabrous with whip-shaped hairs, cylindrical hairs and capitate glands; lateral veins 5–10-paired; petioles up to 10 mm long. Capitulescences terminal and axillary, paniculate and solitary. Capitula campanulate, 8–10 mm long, pedunculate. Receptacle convex, 1.5–3 mm in diam., glabrous. Involucres campanulate, in 6–7 series, 8–9 mm long, 6–10 mm in diam. Phyllaries imbricate, light green with purple apex, margin with spines up to 5 mm long, outer surface arachnoid glandular; the outer and the middle ones lanceolate, apex spinose; the inner ones lanceolate to oblong apex acuminate. Florets 40–60; corollas funnelform, purple or white, puberulous, glands capitate; corolla tubes 4–6 mm long; corolla lobes 1.5–2.5 mm long. Anthers ca. 2 mm long, apical appendage acute, base rounded. Styles purple, 4–7 mm long, branches 1.5–1.7 mm long. Achenes obovate, 1.5–1.7 mm long, glabrous, 10-ribbed. Pappus in 1 series of bristles, 1–4 mm long, present in some florets, deciduous.
Distribution
Thailand: Chiang Mai, Chiang Rai, Loei, Chaiyaphum, Nakhon Ratchasima. Endemic.
Specimens examined
Thailand, Loei, Nahaew, Phu Suan Sai national park, 17°30.21'N, 100°56.35'E, 6 Nov 2007, S. Bunwong 348 (KKU, US); Phu Suan Sai national park, R. Pooma 1231 (BKF); Chiang Rai, Wieng Pa Pao, 26 Oct 1997, J.F.Maxwell 197-1215 (BKF); Nakhon Ratchasima, Bua Yai, 1 Nov 1931, Put 4264 (BK, E, K, P).
Diagnostic characters
Camchaya tenuiflora differs from Camchaya loloana by its longer marginal spine on phyllaries and leaf surfaces without T-shaped hair.
Ecology
Open area in evergreen forest, alt. 700 m; flowering October to December.
Vernacular name
Phu Ra Wee (พู่ระวี).
Taxon Treatment
- Bunwong, S; Chantaranothai, P; Keeley, S; 2014: Revisions and key to the Vernonieae (Compositae) of Thailand PhytoKeys, 37: 25-101. doi
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