Acilepis peguensis
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Ordo: Asterales
Familia: Asteraceae
Genus: Acilepis
Name
Acilepis peguensis (C.B.Clarke) H.Rob. & Skvarla, Proc. Biol. Soc. Washington 122(2): 141. 2009. – Wikispecies link – IPNI link – Pensoft Profile
- Vernonia peguensis C.B.Clarke, Compos. Ind.: 13. 1876.
- Acilepis peguensis Type. Myanmar, Yomah province, Pegu, S. Kurz 882 (holotype: K!). Fig. 5E.
- Vernonia kradungensis H. Koyama, Bull. Natl. Sci. Mus. Tokyo, Ser. B 30(2): 72. 2005.
- Acilepis peguensis Type: Thailand, Loei, Phu Kradung national park, H. Koyama, H. Terao & Th. Wongprasert T-31211 (holotype: KYO!).
Description
Perennial herbs, 0.5–150 cm tall. Stems erect, conspicuously ribbed, sericeous. Leaves 10–20 by 3–6 cm, oblanceolate or obovate, margin serrate, apex acute or acuminate, base attenuate, chartaceous; both surfaces scabrous with whip-shaped hairs and capitate glands; lateral veins 4–8-paired; petioles up to 30 mm long. Capitulescences terminal or axillary, paniculate. Capitula campanulate, 10–12 mm long, pedunculate. Receptacle flat, 2–2.5 mm in diam., hairy. Involucres narrowly campanulate or slightly oblong-cylindrical, in 4–5 series, 5–6 mm long, 3–4 mm in diam., herbaceous. Phyllaries light green, margin piliferous, outer surface arachnoid, glands capitate; the outer and the middle ones ovate, apex acuminate or aristate; the inner ones lanceolate to oblong, apex acuminate. Florets 10–15; corollas funnelform, white or purple, glandular; corolla tubes 4.5–5 mm long; corolla lobes 2.5–3 mm long. Anthers purple, 3–3.5 mm long, apical appendage acute, base obtuse. Styles purple, 6–7 mm long, branches 2–2.5 mm long. Achenes subterete, 2.5–3.5 mm long, 10-ribbed, glandular. Pappus bristles, the inner ones 5.5–6 mm long.
Distribution
Thailand: Loei. Myanmar.
Specimens examined
Thailand, Loei, Phu Kradung national park, 16°52.25'N, 101°50.74'E, 23 Dec 2007, S. Bunwong 372 (KKU, US); Phu Kradung national park, 7 Jul 1949, Bunpheng 264 (K); Phu Kradung national park,18 Dec 1982, H. Koyama, H. Terao & Th. Wongprasert T-31211 (KYO); Phu Kradung national park, 4 Nov 1984, G. Murata, C. Phengklai, S. Mitsuta & T. Yahara T-43083 (BKF, L, KYO); Phu Kradung national park, 4 Nov 1984, H. Nagamasu & N. Nantasan T-43024 (AAU, BKF, KYO, US).
Ecology
Deciduous or hill dry evergreen forest, alt. 800 m; flowering November to December.
Diagnostic characters
The distinctive features of Acilepis peguensis are membranaceous leaves and achenes without hair.
Vernacular name
Dok Khon Kai Noi (ดอกขนไก่น้อย).
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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