Ipomoea lutea Hemsley

Wood, John R. I., Munoz-Rodriguez, Pablo, Williams, Bethany R. M. & Scotland, Robert W., 2020, A foundation monograph of Ipomoea (Convolvulaceae) in the New World, PhytoKeys 143, pp. 1-823 : 1

317. Ipomoea lutea Hemsley , Diagn. Pl. Nov. 34. 1879. (Hemsley 1878-80: 34)

Quamoclit lutea (Hemsley) Hallier f., Bot. Jahrb. 16: 537. 1894 [pub.1893]. (Hallier 1893a: 537).

Ipomoea lutea forma rubra O'Donell , Lilloa 29: 67. 1959. ( O’Donell 1959a: 67). Type. MEXICO. Chiapas, Chicharras, E.W. Nelson 3768 (holotype GH, isotype US).

Type.

GUATEMALA. O. Salvin & C. Godman s.n. (holotype K000612779).

Diagnosis. Very similar to I. hastigera but reaching 5 m, the corolla yellow, orange or red, 4-5 cm long, the tube 3.5-4 cm, the limb distinctly lobed to 4-6 mm.

Distribution.

Endemic to woodland between 700-1500 m in the extreme south of Mexico and Guatemala.

GUATEMALA. Quezaltenango, T. Croat & Hannon 63459 (MO, FTG); Sololá, H. Förther 10241 (BM); Sacatepeguez, Hunnewell 14879 (GH).

MEXICO. Chiapas: Unión Juárez, Córdoba, E. Ventura & E. López 1283 (BM); Kulaktik, Tenejapa, A. Méndez Ton 5560 (IEB, MO). Oaxaca: Ixtlán de Juárez, J.C. Flores et al. 054 (IEB, MO). Tabasco: Huimanguillo, J. Calónico Soto 21293 (BM, IEB).