Okia pseudobirmanica
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Ordo: Asterales
Familia: Asteraceae
Genus: Okia
Name
Okia pseudobirmanica (H.Koyama) Bunwong, Chantar. & S.C.Keeley comb. nov. – Wikispecies link – IPNI link – Pensoft Profile
- Vernonia pseudobirmanica H.Koyama, Bull. Natl. Sci. Mus. Tokyo, Ser. B 29(1): 16. 2003.
Type
Thailand, Tak, Khao Pha War, T. Shimizu, H. Toyokuni, H. Koyama, T. Yahara & T. Santisuk T-18505-bis (holotype: KYO!). Fig. 10B.
Description
Perennial herbs, 20–40 cm tall. Stems erect, conspicuously ribbed, puberulous. Leaves cauline, 3–12 by 1–3 cm, elliptic or obovate, margin serrate, apex acuminate, base attenuate, chartaceous; upper surface glabrate or scabrous; lower surface glabrate or pubescent; lateral veins 7–12-paired; petioles up to 1 cm long. Capitulescences terminal, loosely corymbose. Capitula broadly campanulate, 5–6 mm long, pedunculate. Receptacle glabrous. Involucres broadly campanulate, in 4–5 series, ca. 5 mm long. Phyllaries imbricate, green, margin piliferous, outer surface nearly glabrous; the outer and the middle ones linear-oblong, apex acute; the inner ones ovate-lanceolate to oblong, apex obtuse. Florets ca. 20; corollas funnelform, purple, glabrous. Achenes fusiform, ca. 3 mm long, 10-ribbed, glabrous. Pappus in 2 series of bristles, the inner ones ca. 5 mm long.
Distribution
Thailand: Tak, Kanchanaburi. Endemic.
Specimens examined
Thailand, Tak, Khao Pha War, 16°46.32'N, 98°41.17'E, T. Shimizu, H. Toyokuni, H. Koyama, T. Yahara & T. Santisuk T-18505-bis (KYO); Kanchanaburi, Si Sa Wat, 13 Nov 1971, C.F. van Beusekom, C. Phengklai, R. Geesink & B. Wongwan 3746 (BKF, K, L, P).
Diagnostic characters
Okia pseudobirmanica differs from Okia birmanica by its smaller capitula.
Ecology
Rare on limestone, alt. 700–900 m; flowering November to December.
Vernacular name
Tum Doi (ตุ้มดอย).
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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