Okia birmanica (Kuntze) H.Rob. & Skvarla, Proc. Biol. Soc. Washington 123(1): 91. 2010.

Bunwong, Sukhonthip, Chantaranothai, Pranom & Keeley, Sterling C., 2014, Revisions and key to the Vernonieae (Compositae) of Thailand, PhytoKeys 37, pp. 25-101 : 83

publication ID

https://dx.doi.org/10.3897/phytokeys.37.6499

persistent identifier

https://treatment.plazi.org/id/D1A97AF0-C8B9-50E8-9514-4F7CB1B17DA1

treatment provided by

PhytoKeys by Pensoft

scientific name

Okia birmanica (Kuntze) H.Rob. & Skvarla, Proc. Biol. Soc. Washington 123(1): 91. 2010.
status

 

Okia birmanica (Kuntze) H.Rob. & Skvarla, Proc. Biol. Soc. Washington 123(1): 91. 2010.

Vernonia birmanica (Kuntze) Merr., Brittonia 2: 200. 1936.

Cacalia birmanica Kuntze, Rev. Gen. P1.: 323. 1891.

Type.

Myanmar, Moulmein, O. Kuntze 6271 (holotype: K!). Fig. 10A View Figure 10 .

Description.

Annual herbs, 1-2 m tall. Stems erect, inconspicuously ribbed, puberulous. Leaves cauline, 5-20 by 1-5 cm, lanceolate, margin serrate, apex acuminate, base attenuate, chartaceous; upper surface scabrous, lower surface puberulous, lateral veins 8-12-paired; petioles up to 2 cm long. Capitulescences terminal, loosely paniculate. Capitula campanulate, 10-12 mm long, pedunculate. Receptacle convex, glabrous. Involucres subglobular, in 4-5 series, ca. 7 mm long. Phyllaries imbricate, green with purple apex, outer surface arachnoid; the outer and the middle ones ovate or elliptic, apex obtuse; the inner ones broadly oblong, apex obtuse. Florets ca. 55; corollas funnelform, white or purple, puberulous without glands. Achenes subterete, ca. 4 mm long, 10-ribbed, aculeate between ribs. Pappus in 2 series of bristles, the inner ones ca. 7 mm long, persistent.

Distribution.

Thailand: Lampang, Kanchanaburi. Myanmar.

Specimens examined.

Thailand, Kanchanaburi, Sai Yok national park, 14°22.29'N, 98°51.07'E, 4 Dec 1961, K. Larsen 8492 (K); Lampang, Jae Son national park, 4 Nov 1996, J.F. Maxwell 96-1490 (BKF).

Diagnostic characters.

Okia birmanica is distinguished by its long and slender pedicel in a loose panicle, phyllaries mostly obtuse with thickened tips, and cup-shaped involucre.

Ecology.

Under dense canopy on the top of limestone mountain, alt. 650-1000 m; flowering September to December.

Vernacular name.

Tum Doi (ตุ้มดอย).

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Asterales

Family

Asteraceae

Genus

Okia

Loc

Okia birmanica (Kuntze) H.Rob. & Skvarla, Proc. Biol. Soc. Washington 123(1): 91. 2010.

Bunwong, Sukhonthip, Chantaranothai, Pranom & Keeley, Sterling C. 2014
2014
Loc

Cacalia birmanica

Kuntze 1891
1891