A foundation monograph of Ipomoea (Convolvulaceae) in the New World Author Wood, John R. I. Author Munoz-Rodriguez, Pablo Author Williams, Bethany R. M. Author Scotland, Robert W. text PhytoKeys 2020 143 1 823 http://dx.doi.org/10.3897/phytokeys.143.32821 journal article http://dx.doi.org/10.3897/phytokeys.143.32821 1314-2003-143-1 F6F11A6EE4FF5A1885CEA2B60AE965A5 261b. Ipomoea orizabensis subsp. collina (House) J.R.I. Wood & Scotland, stat. nov urn:lsid:ipni.org:names: Ipomoea collina House , Bot. Gaz. 43 (6): 412. 1907. (House 1907b: 412). Type. MEXICO. Coahuila, E. Palmer 396 (holotype US471266, isotypes CAS, F, GH, K, MO, NY, UC). Ipomoea orizabensis var. collina (House) J.A. McDonald , Lundellia 4 : 87. 2001. (McDonald 2001: 87). Ipomoea batatoides Benth. , Pl. Hartw. 46 . 1840. (Bentham 1839-57: 46), nom. illeg., non Ipomoea batatoides Choisy (1838) . Type. MEXICO. [Hidalgo], Mestitlan , K.T. Hartweg (K000612737). Ipomoea mestitlanica Choisy in A.P. de Candolle , Prodr. 9 : 389. 1845. (Choisy 1845: 389). Type. Based on I. batatoides Benth. Type. Based on Ipomoea collina House Diagnosis . Leaves 3-7-lobed, the segments narrowly oblong in outline, narrowed at both ends. Illustration. Carranza (2007: 89) (includes variations in leaf shape). Distribution. Principally in the drier areas of northern Mexico, especially the Sonora desert. MEXICO. Coahuila : Cuatrocienagas , Sierra de San Marcos, E. Carranza et al. 1667 (IEB); Ramos de Arizbe, Sierra de la Paila, J.A. Villarreal 3923 (IEB). Guanajuato : Jaral del Progreso , Schumann 941 (P); sine loc., Schnee s.n. (P). Hidalgo : Type of Ipomoea batatoides Benth. Sonora : Sierra de Parras, C.G. Purpus 4975 (BM, F, GH, MO). Also Chihuahua, Nuevo Leon , Tamaulipas and Zacatecas fide McDonald (2001: 87).