DIOSCOREACEAE, R.Brown, 1810

Baksh-Comeau, Yasmin S., Maharaj, Shobha S., Adams, Dennis, Harris, Stephen A., Filer, Denis L. & Hawthorne, William D., 2016, An annotated checklist of the vascular plants of Trinidad and Tobago with analysis of vegetation types and botanical ‘ hotspots’, Phytotaxa 250 (1), pp. 448-450 : 448-450

DIOSCOREACEAE

Dioscorea alata L., Sp. Pl. 2: 1033 (1753) Common Name: Chupri Alu, Coconut Yam. Greater Asiatic Yam, Lisbon Yam, Oriental Yam, St. Vincent Red Yam, Water Yam, White Yam. Exotic.

Dioscorea altissima Lam., Encycl. 3: 231 (1789) Habit: Climber. Habitat: Forests. IUCN: LC. Star: GN. Vouchers (selected): TOBAGO: Great Dog River, Eggers 5772 (K). Global range: Greater Antilles, Virgin Islands, Lesser Antilles, Venezuela, Guyana, Surinam, Brazil, Peru, Bolivia.

Dioscorea bulbifera L., Sp. Pl. 2: 1033 (1753) Common Name: Aerial Yam, Potato Yam. Exotic.

Dioscorea cayenensis Lam., Encycl. 3: 233 (1789) Syn: Dioscorea berteroana Kunth ; Dioscorea occidentalis Kunth ; Dioscorea rotundata Poir. Common Name : Afou, Afou Yam, Devil Yam, Matuta Yam, Negro Yam, Yam Atouta, Yam Jab, Yellow Guinea Yam, Yellow Yam. Exotic.

Dioscorea convolvulacea Schltdl. & Cham., Linnaea 6: 49 (1831) Habit: Climber. Habitat: Secondary woodlands. IUCN: LC. Star: GN. RBS Distribution Plots: TRINIDAD: Monos. RBS Vegetation Classes: Moist lowland forest (Vegnum 5: 3% RBS samples). Vouchers (selected): TRINIDAD: St. Anns, Finlay s.n. (TRIN 767); Santa Cruz, Simmonds 279 (TRIN 14177); Maraval, Crueger s.n. (K), Crueger 229 (TRIN 766); Laventille, Alexander s.n. (TRIN 5090); Maracas, Hart s.n. (TRIN 6570). Global range: Southern Mexico, Central America, Bolivia.

Dioscorea esculenta (Lour.) Prain, Gard. Bull. Straits Settl. 1: 396 (1917) Exotic.

Dioscorea pilosiuscula Bertero ex Spreng., Syst. 2: 152 (1825) Habit: Climber. Habitat: Forests. IUCN: LC. Star: GN. RBS Distribution Plots: TRINIDAD: P.O.S.-Santa Cruz. RBS Vegetation Classes: Moist lowland forest (Vegnum 5: 3% RBS samples). Vouchers (selected): TOBAGO: Frenchfield, Eggers 5639 (K); Bacolet, Eggers 5873 (K); Rockley Vale, Broadway 4082 (BM, E, GH, P). Global range: Greater Antilles, Virgin Islands, Lesser Antilles, Mexico, Central America, Colombia, Venezuela, Guianas, Ecuador, Peru, Bolivia.

Dioscorea polygonoides Humb. & Bonpl. ex Willd., Sp. Pl. , ed. 4 4: 795 (1806) Syn: Dioscorea lutea G.Mey. ; Dioscorea martinicensis Spreng. ; Dioscorea polygonoides Humb. & Bonpl. ex Willd. var. aperta Knuth Habit : Climber. Habitat: Margins of forests. IUCN: LC. Star: GN. RBS Distribution Plots: TOBAGO: NE Coast-Main Ridge F.R.; TRINIDAD: Mt.St.Benedict-Caura. RBS Vegetation Classes: Moist lowland forest (Vegnum 3: 3% RBS samples; Vegnum 4: 1% RBS samples). Vouchers (selected): TOBAGO: Adelphi, Broadway 3415 (BM, E, K, NY); Easterfield, Broadway 4008 (BM, E, GH, K, NY, P); Campbleton, Broadway 4278 (BM, E, K, NY); Lambeau, Broadway 3875 (K); Lot 42, Broadway 4448 (BM, E, GH, K, NY, P); Menna, Broadway 4759 (BM, E, GH, K, NY, P); Mt. St. George-Castara Road, Cheesman 271 (TRIN 13517); Main Ridge, Cowan 1527 (GH, NY, P); Tobago Forest Reserve to Bloody Bay Road, Clement & Ryves 496 (BM); near Easterfield, Clement & Ryves 683 (BM). TRINIDAD: Chacachacare, Britton et al. 2765 (GH), Baksh 1060 (TRIN 29781); Blue Basin, Britton et al. 1907 (K, NY); Tucuche, Freeman & Williams s.n. (TRIN 10089), Simmonds 306 (TRIN 14221); Maracas,

CHECKLIST TO VASCULAR PLANTS OF TRINIDAD AND TOBAGO

Phytotaxa 250 (1) © 2016 Magnolia Press • 187

Dannouse s.n. (TRIN), Broadway 7343 (BM), Broadway 7390 (BM); St. Augustine, Buthn s.n. (K, TRIN 13053); Tunapuna, Broadway s.n. (TRIN 3986); Caura, Hart s.n. (TRIN 6725); Mt. Aripo, Simmonds 228 (TRIN 14019); Aripo Heights, Broadway s.n. (TRIN 9919, GH, K, NY); Caroni, Williams s.n. (TRIN 10929); Manzanilla, Britton & Britton 2181 (K, NY, TRIN 9715); Carmichael Road, Britton & Hazen 1925 (K); San Fernando, Kuntze 956 (NY); Moruga, Broadway s.n. (TRIN 7911); Southern Watershed Reserve, Simmonds 440 (TRIN 14487); Point Coco, Broadway s.n. (TRIN 8546). Global range: Greater Antilles, Lesser Antilles, Mexico, Central America, Colombia, Venezuela, Guianas, Brazil, Ecuador, Bolivia, Peru.

Dioscorea trifida L.f., Suppl. Pl. 427 (1782) Common Name: Cush-Cush, Yam-Seed. Exotic.

Dioscorea trifoliata Kunth , Nov. Gen. Sp. 1: 275 (1815) Habit: Climber. Habitat: Forests. IUCN: LC. Star: GN. RBS Distribution Plots: TRINIDAD: Monos. RBS Vegetation Classes: Dry lowland forest (Vegnum 6: 10% RBS samples). Vouchers (selected): TRINIDAD: Chacachacare, Finlay s.n. (TRIN 1993), Hart s.n. (NY, TRIN 768), Britton et al. 2765 (K, NY), Williams s.n. (TRIN 11842); Monos, Williams s.n. (TRIN); Gasparee, Broadway 9427 (K). Global range: Central America, Colombia, Venezuela, Brazil, Peru.