Tarlmounia elliptica (DC.) H.Rob., S.C.Keeley, Skvarla & R.Chan, Proc. Biol. Soc. Washington 121(1): 32. 2008.

Bunwong, Sukhonthip, Chantaranothai, Pranom & Keeley, Sterling C., 2014, Revisions and key to the Vernonieae (Compositae) of Thailand, PhytoKeys 37, pp. 25-101 : 92-93

Tarlmounia elliptica (DC.) H.Rob., S.C.Keeley, Skvarla & R.Chan, Proc. Biol. Soc. Washington 121(1): 32. 2008.

Vernonia elliptica DC. in Wight, Contrib. Bot. Ind. 5. 1834.

Type.

India, Nilgherry, Wight 1377 (holotype: E!). Fig. 10I .

Description.

Climbing shrubs or scandents. Stems caulescent, young branches inconspicuously ribbed, white sericeous. Leaves 5-12 by 3-6 cm, elliptic, margin entire or serrate, apex acute or obtuse, base rounded, subcoriaceous; upper surface puberulous without glands; lower surface sericeous with T-shaped hairs; lateral veins 7-11-paired; petioles up to 1 cm long. Capitulescences terminal and axillary, thyrsoid paniculate. Capitula narrowly campanulate, 10-15 mm long. Receptacle convex, ca. 1 mm in diam., glabrous. Involucres narrowly campanulate or slightly oblong-cylindrical, in 3-4 series, 3-4 mm long, ca. 3 mm in diam. Phyllaries imbricate, green or purple apically, margin piliferous, outer surface arachnoid glandular; the outer and the middle ones ovate, obtuse to rounded; the inner ones obovate, apex acute or obtuse. Florets 4-5; corollas funnelform, purple or white, glandular, corolla tubes 4.5-5.5 mm long; corolla lobes 2-3 mm long. Anthers 3-3.5 mm long, apical appendage acute, base obtuse. Styles purple, 5.5-7 mm long, branches ca. 2 mm long. Achenes turbinate, ca. 2 mm long, 4-7-ribbed, covered with sparse hairs and capitate glands. Pappus in 2 series of bristles, the inner ones 5-6 mm long, persistent.

Distribution.

Thailand: Mae Hong Son, Chiang Mai, Phitsanulok, Loei, Nong Bua Lum Phu, Udon Thani, Chaiyaphum, Mahasarakam, Nakhon Ratchasima, Roi Et, Si Sa Ket, Phetchaburi, Saraburi, Phra Nakhon Si Ayutthaya, Nakhon Nayok, Nonthaburi, Bangkok, Prachin Buri, Chon Buri, Rayong, Chanthaburi, Trat, Chumphon, Surat Thani, Nakhon Si Thammarat. America, Africa, Asia.

Specimens examined.

Thailand, Mahasarakam, Nadoon district, 15°46.22'N, 103°1.81'E, 1 Mar 2003, S. Bunwong 69 (KKU); Khon Kaen, Chumpare District, 23 Feb 2008, S. Bunwong 390 (KKU, US); Phitsanulok, Thung Salang Luang, 1 Mar 1971, S. Sutheesorn 2980 (BK); Loei, Paa See Than, 15 Feb 1901, P. Suvarnakoset 1300 (BKF, US); Chaiyaphum, 27 Jan 1931, A.F.G. Kerr 19950 (BK, BM, E, K); Ratchaburi, Tapha Ban Pang, 25 Feb 1965, S. Sutheesorn 371 (BK, US); Saraburi, Muang District, 22 Feb 1975, J.F. Maxwell 75-152 (AAU, BK, L); Muang District, 19 Mar 1990, Dee 34 (BKF); Nakhon Nayok, 16 Feb 1966, K. Iwatzuki & N. Fukuoka T-7373 (BKF); Nakhon Nayok, 16 Jan 1985, F. Konta, W. Nanakorn & Th. Wongprasert 49085 (BKF, K, L); Bangkok, Ram Intra, 21 Feb 1983, H. Koyama & H. Terao T-33716 (BKF); Prachin Buri, Aranyaprathet, 29 Mar 1962, Adisai 123 (BK); Chon Buri, Bang Saan, 18 Oct 1982, Y. Paisooksantivatana 1182-82 (BK); Trat, Koh Chang, 19 Feb 1998, Sanan 13 (E, BKF, US); Koh Chang, 15 Jan 1955, B. Sangkhachand 417 (BKF, US); Rayong, Ban Pe, 24 Feb 1980, Put 2771 (BK, BM, E, K); Chantaburi, Khao Soi Dow, 10 Feb 1966, K. Iwatzuki & N. Fukuoka T-7314 (BKF); Chumphon, 1 Feb 1968, Vacharapong 8 (BK, US); Surat Thani, Ta Kanan, 16 Mar 1927, A.F.G. Kerr 12344 (BK, BM, K); Nakhon Si Thammarat, Ka Biad, 15 Mar 1957, Sanan 1002 (BKF, US).

Diagnostic characters.

Tarlmounia elliptica is characterized by having appressed T-shaped hairs on leaf surfaces, scandent habits and involucre without glands.

Ecology.

Open area in wetland or saline land, alt. 0-100 m; flowering October to May.

Vernacular name.

Kiew Darn (เขี้ยวดาน), Sar Muk Lord (ซ้าหมักหลอด), Tanmon (ตานหม่อน), Tao Kee Tao (เถาขี้เถ้า), Lee Kuan Yuu (ลีกวนยู), Tao Wan Lek (เถาวัลย์เหล็ก), Khud Mon (คัดมอญ), Tarlmoun (ตาลหม่น).

Figures

Figure 10. Morphology of Vernonieae in Thailand 6. A Okia birmanica B Okia pseudobirmanica C Pulicarioidea annamica D-E Strobocalyx arborea F Strobocalyx solanifolia G-H Struchium sparganophorum I Tarlmounia elliptica.