THAI FOR. BULL. (BOT.) 31: 44– 46. 2003. Notes on Clerodendrum (Lamiaceae) CHARAN LEERATIWONG* & PRANOM CHANTARANOTHAI** ABSTRACT. A new combination, Clerodendrum farinosum var. pubescens is made. Clerodendrum lasiocephalum and C. schmidtii var. macrophyllum are reduced to synonymy of C. chinense var. simplex and C. schmidtii, respectively. Clerodendrum smitinandii is recorded from Cambodia and Vietnam for the first time. Six lectotypes are selected. The following nomenclatural and typification changes have arisen from work being carried out for the Flora of Thailand Clerodendrum account. Clerodendrum farinosum (Roxb.) Walp. var. pubescens (H.R. Fletcher) C. Leeratiwong & P. Chantaranothai comb. nov.— Clerodendrum venosum Wall. ex C.B. Clarke var. pubescens H.R. Fletcher, Bull. Misc. Inform., Kew 1938: 205. 1938; Fletcher, Bull. Misc. Inform., Kew 1938: 428. 1938. Type: Thailand. Chiang Mai, Me Tun, mixed forest, alt. ca. 600 m., A.F.G. Kerr 6190 (lectotype BK!, selected here; isolectotype K!). Kerr 6190 had been named as C. venosum var. pubescens by Fletcher (1938). However, Daniel & Rajendran (1993) proposed C. farinosum as the correct name for V. venosum. Therefore, it is necessary to make a new varietal combination. This variety can be easily separated from the typical variety by the dense hairs on the twigs and the lower surface of the leaves. It is known only from the type collection. Clerodendrum chinense (Osbeck) Mabb. var. simplex (Moldenke) Chen, Novon 1: 58. 1991.— C. philippinum Schauer var. simplex Moldenke, Phytologia 20: 338. 1970. Type: Thailand, Ban Musseo, between Tak and Mae Sot, alt. 400 m, F. Floto 7634 (holotype herb. Moldenke). — C. lasiocephalum C.B. Clarke in Hook.f., Fl. Brit. India 4: 594. 1885, synon. nov. Type: India, Mishmee, Griffith 6055 (holotype K!). Although closely related to the typical variety, var. simplex differs consistently in the length of the corolla tube, with a single layer of five lobes. Clerodendrum lasiocephalum is similar to C. chinense var. simplex. Therefore the former is reduced to the synonymy of the latter. The species is widespread from India, Myanmar and Thailand (except the peninsular part) to China. *Department of Biology, Faculty of Science, Prince of Songkla University, Songkhla 90112, Thailand. **Applied Taxonomic Research Center, Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand. NOTES ON CLERODENDRUM (LAMIACEAE) (C. LEERATIWONG & P. CHANTARANOTHAI) 45 Clerodendrum garrettianum Craib, Bull. Misc. Inform., Kew 1911: 443. 1911. Type: Thailand, Chiang Mai, Doi Suthep, A.F.G. Kerr 1435 (lectotype K!, selected here; isolectotypes BM!, K!). Craib (1911) described C. garrettianum based on two specimens, Kerr 1309 (BM!, K!) and Kerr 1435, from Doi Suthep, Chiang Mai province. The latter collection is selected as the lectotype, as it is a comprehensive well preserved specimen. The species is widespread from north and north-eastern Thailand to Indo-China. Clerodendrum lloydianum Craib, Bull. Misc. Inform., Kew 1914: 284. 1914. Type: Thailand, Phrae, Vanpruk 499 (lectotype K!, selected here; isolectotype K!). Clerodendrum lloydianum is widespread in Thailand (except the peninsular part) and Indo-China. Clerodendrum schmidtii C.B. Clarke, Bot. Tidsskr. 26: 173. 1904. Type: Thailand. Trat, Chang Island, Klawng Nonsi, Schmidt 740 (lectotype K!, selected here).— C. hastato-oblongum C.B. Clarke, Bot. Tidsskr. 26: 173. 1904. Type: Thailand. Trat, Chang Island, Klawng Son, Schmidt 692a (holotype C).— C. schmidtii C.B. Clarke var. macrophyllum Moldenke, Phytologia 23: 180.1972, syn. nov. Type: Thailand. Trat, Koh Rangyai, 20 km south of Koh Chang, Charoenphol, Larsen & Warncke 5022 (holotype AAU; isotype BKF!). Variety macrophyllum was based on Charoenphol, Larsen & Warncke 5022, which has ovate, obovate or cordate leaves. However, intermediates exist between this variety and the typical plant. We conclude that Moldenke's variety (1972) does not warrant separation at that rank. The species is widespread in north-eastern to southeastern Thailand and Indo-China. Clerodendrum smitinandii Moldenke, Phytologia 7: 79. 1959. Type: Thailand: Chanthaburi, Pong Namrawn, Smitinand 3197 (holotype herb. Moldenke). Smitinand & Abbe 6519 (BKF, K) which was collected from Mt Bokor, Kampot, Cambodia and J. & M.S. Clemens 4261 (K), collected from Mt Basi, Vietnam, May– July 1927, are the first records for Cambodia and Vietnam, respectively. Clerodendrum umbratile King & Gamble, Bull. Misc. Inform., Kew 1908: 110. 1908. Type: Malaysia: Perak, Dr King’s collector 722 (lectotype K!, selected here). Eleven syntypes were cited in the protologue of C. umbratile by King and Gamble (1908). The syntypes were collected by botanists from Malaysia and Indonesia. Dr King's collector 722 is selected here as the lectotype because it is in better condition than the other syntypes. The species is widespread from southern Thailand and peninsular Malaysia to Sumatra. 46 THAI FOREST BULLEIN (BOTANY) 31 Clerodendrum vanprukii Craib, Bull. Misc. Inform., Kew 1911: 444. 1911. Type: Thailand. Phrae: Huai Kamin, Vanpruk 207 (lectotype K!, selected here; isolectotype K!). Clerodendrum vanprukii is endemic to northern Thailand. ACKNOWLEDGEMENTS We sincerely thank curators and staff of the following herbaria for the loan of material and, in some cases, for assistance during our visits to the institutions: BCU, BK, BKF, BM, K, LINN, PSU, QBG and US. We also thank Dr David Simpson (K) for providing some information. This study is supported by the Biodiversity Research Program, Thailand, BRT 541075. REFERENCES Craib, W.G. 1911. Contributions to the Flora of Siam. II. List of Siamese plants with descriptions of new species - continued. Bull. Misc. Inform., Kew 1911: 443. Daniel, P. & Rajendran, A. 1993. Clerodendrum farinosum, the correct name for C. venosum (Verbenaceae). Taxon 42: 669–670. Fletcher, H.R. 1938. Contributions to the Flora of Siam. Additamentum XLIX. Bull. Misc. Inform., Kew 1938: 199–209. Anon. 1908. Decades kewenses. Plantarum novarum in herbario Horti Regii conservatarum. Decades XLVII–XLVIII. Bull. Misc. Inform., Kew 1908: 110. Moldenke, H.N. 1972. Novelties from Brazil, Peru, Venezuela, and Thailand. Phytologia 23: 180–181.