Acilepis namnaoensis
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Ordo: Asterales
Familia: Asteraceae
Genus: Acilepis
Name
Acilepis namnaoensis (H.Koyama) H.Rob. & Skvarla, Proc. Biol. Soc. Washington 122(2): 141. 2009. – Wikispecies link – IPNI link – Pensoft Profile
- Acilepis namnaoensis Vernonia namnaoensis H.Koyama, Bull. Natl. Sci. Mus. Tokyo, Ser. B 30(1): 22. 2004.
Type
Thailand, Phetchabun, Nam Nao national park, H. Koyama, H.Terao & Th. Wongprasert T-311840 (holotype: KYO!). Fig. 5C.
Description
Perennial herbs, 1–2 m tall. Stems erect, conspicuously ribbed, villose. Leaves 15–20 by 5–8 cm, obovate or oblanceolate, margin serrate, apex acuminate, base cuneate, subcoriaceous; both surfaces scabrous with whip-shaped hairs and capitate glands; lateral veins 6–8-paired; petioles up to 10 mm long. Capitulescences terminal and axillary, paniculate. Capitula campanulate, 12–15 mm long, pedunculate. Receptacle flat, 2–2.5 mm in diam., hairy. Involucres campanulate, in 4–5 series, 7–8 mm long, 6–7 mm in diam., herbaceous. Phyllaries light green, margin piliferous, outer surface densely arachnoid, glands capitate; the outer and the middle ones ovate, apex spinose; the inner ones ovate-lanceolate, apex apiculate. Florets ca. 20; corollas funnelform, purple, glandular; corolla tubes ca. 5 mm long; corolla lobes ca. 3 mm long. Anthers yellowish, ca. 3 mm long, apical appendage acute, base acute. Styles purple, 5–8 mm long, branches 1.5–2.5 mm long. Achenes subterete, 3.5–4 mm long, 10-ribbed, covered with sparse hairs and glands. Pappus bristles, the inner ones 6–7 mm long.
Distribution
Thailand: Phetchabun, Chaiyaphum. Endemic.
Specimens examined
Thailand. Chaiyaphum, Chulabhon Dam, 16°32.10'N, 101°38.93'E, 8 Oct 2007, S. Bunwong 385 (KKU, US); Chulabhon Dam, 27 Dec 1982, H. Koyama, H.Terao & Th. Wongprasert T-311840 (KYO).
Ecology
Dry dipterocarp or dry evergreen forest, alt. 800 m; flowering November to December.
Diagnostic characters
Acilepis namnaoensis is characterized by its cup-shaped involucre and spinose phyllaries with whitish tomentum. Its specific epithet is derived from Nam Nao national park in Pethchabun province.
Vernacular name
Nad Muang Nam Nao (หนาดม่วงน้ำหนาว).
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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