1. Thunbergia alata Bojer Thunbergia alata Bojer; Sims, Bot. Mag. 52: pl. 2591. 1825. Type grown from seeds procured in Mauritius. The name alata alludes to the winged petioles. A pubescent trailing or climbing vine usually about 1 meter long; leaves ovate to triangular-ovate, 4 to 8 cm, long, acute at apex, cordate or hastate at base, entire or remotely few-toothed, pubescent; petiole wing-margined, as long as the leaf blades or shorter; peduncles mostly longer than the petioles; bracts ovate-lanceolate, acute or acuminate, pubescent, about 1.5 cm. long; corolla 2.5 to 4 cm. long, yellow or orange usually with a dark purple eye; capsule depressed-globose, pubescent, 8 to 10 mm. in diameter, its stout beak about 1 cm. long. Fields, along trails, edges of thickets, gardens, and open waste places in general. The specimens cited were collected 940 to 1,700 meters altitude. Tropical America, southern and eastern Africa, Hong Kong, Guam, Amboina, Philippine Islands. ANTIOQUIA: Medellín, Archer 47 (US); Toro 12 (US). Valparaiso, Pennell 10802 (GH, Ph, US). CALDAS: Wayside below Apia, Pennell 10291 (GH, NY). Roadside west of Armenia, Pennell, Killip, & Hazen 8635 (GH, Ph, NY, US). CUNDINAMARCA: El Colegio, Bro. Ariste Joseph 1055 (US). Juntas, Lehmann 1854 (US). La Esperanza, Garcia-Barriga 4704 (US). Along stream above Mel- gar, Pennell 2842 (US). Sasalma, Bro. Nicéforo Maria s. n. (US).
EL VALLE: Roadside near Call, Pérez-Arbeldez & Cuatrecasas 6333 (US). Roadsides between Cabuyal and Solorza, Cuatrecasas 14461 (US). Vicinity of Zaragoza, Cuatrecasas 22764 (US). 1a. Thunbergia alata var. bakeri Hort. (A color variant.) Flowers white, in other respects resembling the typical form. Color variants of T. alata are common. Many of these have been recognized as horticultural varieties or have actually been described as valid var- ieties or species. It is, however, difficult if not impossible to distin- guish between these forms or varieties unless fresh flowers are exam- ined or the dried specimens are accompanied by full color notes. The following key will serve to separate the entities listed in Bailey's Standard Cyclopedia of Horticulture: Leaves variegated... Leaves green. Corolla uniform in color. Corolla pure white- Corolla sulphur yellow. Corolla yellow_ Corolla with eye. Corolla white with dark center.. T. aurantiaca subvar. doddsii Paxt. Corolla bright orange with dark center. Corolla pale orange with white center.. T. alata var. bakeri Hort. T. sulphurea Hort. T. lutea Hort, T. alata var. alba Paxt. T. aurantiaca Paxt. T. fryeri Hort. Corolla orange, yellow, buff, or cream with dark center. T. alata Bojer CUNDINAMARCA: Field near La Vega, Pérez-Arbeláez & Cuatrecasas 5346 (US).