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A CHECKLIST OF THE GENUS TARENNA GAERTN. (RUBIACEAE) IN THAILAND (W. KESONBUA & P. CHANTARANOTHAI)

23

23. 23.

Trees; leaves obovate, with acute apex; lateral nerves conspicuous beneath

Large

shrubs;

leaves

elliptic,

with

acuminate

apex;

lateral

nerves

5. T. costata

inconspicuous

beneath

7. T. fragrans

1. Tarenna adangensis (Ridl.) Ridl., Fl. Malay Penins. 2: 107. 1923; Craib, Fl. Siam. 2: 87. 1932; Wong in Ng, Tree Fl. Malaya 4: 412, 415. 1989; Turner, Gard. Bull. Singapore 47: 447. 1995.— Webera adangensis Ridl., J. Straits Branch Roy. Asiat. Soc. 61: 54. 1912. Type: Thailand, Adang Island, 22 July 1911, Ridley 15897 (holotype K!; isotype SING!).— T. calcarea Ridl., J. Straits Branch Roy. Asiat. Soc. 86: 295. 1922. Type: Malaysia, Perak, 26 Jan. 1921, Ridley s.n. (holotype K!).

Thailand.— SOUTHWESTERN: Phetchaburi [Kaeng Krachan, 9 Aug. 2002, Middleton, Suddee, Davies & Hemrat 894 (K)]; Prachuap Khiri Khan [Thap Sakae, HuaiYang Waterfall, 25 March 1987, Soejaito, Smitinand, Santisuk, Taylor & Nantasak 5790 (L), 22 Aug. 1982, Shimizu, Konta, Wongprasert & Sangkhachand T-28694 (BKF)]; PENINSULAR: Chumphon [Siepyuan, 7 Sept. 1927, Put 1001 (BK, BM, K)]; Surat Thani [Kanchanadit, 31Aug. 1927, Kerr 13050 (BK, BM); Kantuli, 7 Sept. 1931, Put 4132 (AAU, BK, BM, K); Khlong Phanom National Park, 18April 2005, Kesonbua 164 (KKU); Ko NguaTalam, 7April 1927, Kerr 12533 (BK, BM, K); Ko Pa-ngan, 11 Nov. 1927, Put 1263 (BK, BM, K); Ko Tao, 29 March 1927, Kerr 12474 (BK, BM, K) & 12724 (BK, BM, K), 24Aug. 1927, Kerr 13016 (BK, BM, K), 10 July 1927, Kerr s.n. (BM);Aug. 1975, Prapat 3 (K)]; Phangnga [Ko Si Ko Ha, 12April 1928, Kerr 15147 (AAU, BK, BM, K); Ko Surin, 17 March 2006, Kesonbua 179 (KKU); Similan Island, 8April 1999, Wongprasert et al. s.n. (BKF); Thung Song, Khao Chem, 21 July 1929, Rabil 133 (BK, BM, K)]; Krabi [Ko Phi Phi, 8April 1930, Kerr 18874 (BK, BM, K), 10April 1930, Kerr 18916 (BK, K); Muang, Wat Tham Suea, 19April 2005, Kesonbua 166 (KKU)]; Phatthalung [Sri Ban Pot, Khao Pu Khao Ya, summit of Pa Peung, 1 April 2005, Kesonbua 156 (KKU),13 June 1987, Maxwell 87–556 (AAU, BKF, CMU,L, PSU)];Trang [Khao Chong, 30 Nov. 1969, Sangkhachand 2203 (BK); Khao Wang, 3Aug. 1929, Rabil 345 (BK, BM); Si Kaew, Had Long Yin, 8 April 2003, Middleton, Chamchamroon, Lindsay, Pooma & Suwanachat 2045 (BKF)]; Satun [Adang Island, 14 Jan. 1928, Kerr 14372 (BK, K); La-ngu, Ko Kabeng, Sept. 1999, Phengklai et al. 12142 (BKF); Tung Nui, 13Aug. 1928, Kerr 14656 (AAU, K, L)]; Songkhla [Pedang Basar, Khao Lup Chang, 9 April 2005, Kesonbua 149 (KKU), 25 June 1986, Maxwell 86–419 (AAU, BKF)];Yala [ThanTo, 16 June 1970, Smitinand 11004 (BKF, K, L, P, E)].

Distribution.— Peninsular Malaysia, Singapore.

Ecology.— Common in evergreen forest, frequently on limestone bedrock; altitude to 800 m. Flowering and fruiting periods: All year round.

Vernacular.— Khem khao dam (ÁȤÁµ¶)(Chumphon);yai krang bai yai(¥µ¥¦´ÄÄ®n) (Surat Thani).

Notes.— Tarenna adangensis is easily distinguished by means of its lax inflorescences, long pedicels and coriaceous, ovate leaves without domatia in the vein angles; the calyx lobes are broadly triangular with acute apices and the stigma is glabrous.

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