Ipomoea lozanii Painter in House

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

132. Ipomoea lozanii Painter in House , Botanical Gazette 43 (6): 411. 1907. (House 1907b: 411)

Type.

MEXICO. Querétaro, San Juan del Rio, J.M. Rose & W.H. Painter 9542 (holotype US00111415, isotypes BM, GH, NY).

Description.

Twining perennial herb from a tuberous rootstock, stems somewhat woody, glabrous to thinly pilose. Leaves petiolate, 2-8 × 1.7-2.5 cm, ovate, apex long-caudate, base cordate to subtruncate and shortly cuneate onto the petiole, auricles rounded, both surfaces glabrous; petioles 2-4.5 cm, glabrous. Inflorescence of solitary (very rarely paired), pedunculate flowers, peduncle 0.5-4 cm, pubescent; bracteoles 1 mm, deltoid, caducous; pedicels 20-40 mm, stouter than peduncles and thickened upwards, nearly glabrous; sepals subequal, glabrous 12-14 × 5-7 mm, ovate, shortly mucronate, outer with scattered fleshy teeth on abaxial surface, inner without teeth but with scarious margins; corolla 5-7 cm long, funnel-shaped, deep pink, glabrous, limb c. 5 cm diam. Capsules 8-10 × 5-6 mm, ellipsoid, glabrous; seeds 4-6 mm long, subglobose, brown, puberulent.

Illustration.

Carranza (2007: 69); Figure 77 .

Distribution.

Endemic to central Mexico, where it grows in dry pine and oak woodland on rocky hillsides and in rough pasture derived from woodland, mostly between 1000 and 2300 m.

MEXICO. Guanajuato: Rincón del Cano, E. Carranza & E. Pérez 4995 (IEB, MEXU, TEX); Mun. Victoria, E. Ventura y E. López 8485 (IEB). Hidalgo: Tecozautla, S. Rojas 237 (IEB). Querétaro: San Juan del Rio, C.G. Pringle 10029 (BM, K, MO, S); Zamorano, O. Ocampo & E. Pérez 1221 (IEB). Sinaloa: El Saucito, P. Tenorio et al. 10292 (MEXU). Tamaulipas: 15 km SW of Ciudad Victoria, G.L. Webster et al. 11241 (S).

Note.

The plate accompanying the protologue is incorrect and shows Ipomoea collina . The correct plate is Figure 3 on page 412 of the Botanical Gazette.

Figures

Figure 3. Sepals of Ipomoea species. A I. pauciflora B I. bernoulliana C I. tentaculifera D I. hartwegii E I. murucoides F I. pantanalensis G I. hederacea H I. funis. Photographs of A (Harling et al. 15403) B (Standley 27496) C (Pringle 6702) D (Santos Martinez 2228 E (Pringle 6066) F (Pott 6399) G (McCarthy s. n.) H Andrieux 600 by John Baker.

Figure 77. Ipomoea lozanii. A habit B outer sepal C inner sepal. Drawn by Rosemary Wise from Pringle 10029.