Ipomoea ternifolia subsp. ternifolia

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

334a. Ipomoea ternifolia subsp. ternifolia

Ipomoea muricata Cav. var. villosa Choisy in A.P. de Candolle , Prodr. 9: 353. 1845. (Choisy 1845: 353). Type. MEXICO. Cuernavaca, Berlandier 974 (lectotype G00135571, designated by Staples and Govaerts in Staples et al. (2015: 221).

Ipomoea ternifolia var. villosa (Choisy) Staples & Govaerts , Phytologia 97: 221. 2015. (Staples et al. 2015: 221).

Convolvulus tenuifolius M. Martens & Galeotti , Bull. Acad. Roy. Sci. Bruxelles 12: 260. 1845. (Martens and Galeotti 1845: 260), nom. illeg., non Convolvulus tenuifolius Vahl (1794) . Type. MEXICO. Oaxaca, H. Galeotti 1373 (lectotype BR00006992521, designated here; isolectotypes BR, G).

Ipomoea delphiniifolia M. Martens & Galeotti , Bull. Acad. Roy. Sci. Bruxelles 12: 265. 1845. (Martens and Galeotti 1845: 265). Type. MEXICO. [Puebla], H. Galeotti 1366 (lectotype BR000006991883, designated here; isolectotypes BR, G, K).

Ipomoea pedatisecta M. Martens & Galeotti , Bull. Acad. Roy. Sci. Bruxelles 12: 265. (Martens and Galeotti 1845: 265). Type. MEXICO. [Oaxaca], H. Galeotti 1370 (lectotype BR00006992545, designated here; isolectotypes BR, G, K).

Ipomoea valida House , Muhlenbergia 3: 40. 1907. (House 1907a: 40). Type. MEXICO. [Colima], Manzanillo, E. Palmer 1031 (holotype US00390639, isotypes BM, CAS, GH, US).

Ipomoea ternifolia var. valida (House) J.A. McDonald, Harvard Pap. Bot. 6: 122.1995. (McDonald 1995: 122). Type. MEXICO. Colima, Manzanillo, E. Palmer 1031 (holotype US00390639, isotypes GH, NY).

Diagnosis. Plants always twining. Longest leaf segments on mature branches <4 cm long; sepals narrowly elliptic 5-9 mm; corolla 1.5-2.8 cm long. The basal cylindrical part of the corolla tube is usually <5 mm long but in var. valida , which is only known from the type locality in Colima, the basal cylindrical tube is 16-18 mm long.

Illustration.

Figure 7B .

Distribution.

Open dry forest in central Mexico extending in scattered locations into Central America. It is found at different altitudes up to 2300 m.

COSTA RICA. Guanacaste, P.N. Santa Rosa, B.E. Hammel & C. Cano 19575 (CR, MO).

EL SALVADOR. Fonseca, G.W. Barclay 2602 (BM, NY, US).

MEXICO. Est. México & Dist. Fed.: Puerto de Santa Isabel, Sierra de Guadelupe, E.K. Balls & W.B. Gowlay 4934 (K); Zacoalco, E. Bourgeau 726 (K, P). Guanajuato: E. Hernández et al. X-2308 (MEXU). Guerrero: Acapulco, E. Palmer 234 (BM, K); Ajuchitlán del Progreso, P. Chamu Alonso 246 (IEB); Copalillo, Monroy de la Rosa 164 (IEB). Jalisco: Barranca de Tequila, C.G. Pringle 4439 (BM, F, GH, K, MO, NY, S, US). Michoacán: Huetamo, P. Tenorio et al. 1546 (ENCB, MO); Zitácuaro, G.B. Hinton 13215 (IEB, K), Tiquicheo, G.B. Hinton 13327 (F, GH, K, MO, NY, US); Churumuco, G. Ibarra 6619 (K). Morelos: Fröderström & Hultén 484 (S); Mayotepec-Las Estancas, J.F. Doebley 486 (ARIZ). Nayarit: SE of Acaponeta, R. McVaugh 21753 (NY). Oaxaca: Tehuantepec, Puente Zimatán, S.H. Salas et al. 3539 (ARIZ), ibid., 4745 (MO); J.I. Calzada 24271 (K, MEXU). Puebla: C.A. Purpus 1281 (F). Sinaloa: Sierra Surotato, H.S. Gentry 6215 (MEXU, MO). Querétaro: Cadereyta de Montes, Las Moras, H. Diáz & E. Carranza 7486 (IEB). Zacatecas: San Juan Capistrano, J.N. Rose 2454 (F, GH).

Lectotypification.

Two specimens each of Convolvulus tenuifolius , Ipomoea pedatisecta and I. delphiniifolia are held at BR. The lectotypes chosen are each based on the specimens annotated as holotypes by McDonald as these have corollas.

Figures

Figure 7. Sepals of Ipomoea species. A I. meyeri B I. ternifolia C I. cryptica D I. heterodoxa E I. sericosepala F I. splendor-sylvae G I. squamisepala H I. trifida. Photographs of A (Anderson 1895) B (Pringle 4439) C (Soto et al. 1331) E (Wood & Soto 27550) F (Wilkin 472) and H (Smith 1570) by John Baker; D (Wallnoefer 9506) by John Wood; G (Mendoza 4902) by Moises Mendoza.