Ipomoea tentaculifera Greenm.

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

415. Ipomoea tentaculifera Greenm. , Proc. Amer. Acad. Arts 33: 482. 1898. (Greenman 1898: 482)

Type.

MEXICO. Oaxaca, C.G. Pringle 6702 (holotype GH, isotypes AC, BM, BR, CM, E, F, GOET, K, M, MEXU, MICH, MO, MSC, NDG, NY, PH, S, UC, US).

Description.

Perennial herb, stems glabrous. Leaves petiolate, 6-11 × 2.5-6.5 cm, ovate, long-acuminate, cordate, glabrous, paler beneath; petioles 3.5-8 cm. Inflorescence of long-pedunculate solitary flowers; peduncles 7-12 cm; bracteoles caducous, not seen; pedicels 45-75 mm, noticeably thicker than peduncles and widened below calyx; sepals slightly unequal, outer 6-7 × 4.5 mm, ovate, obtuse, covered in soft fleshy spines on the abaxial surface, but otherwise glabrous, inner c. 8 × 5 mm, obovate, truncate, shortly mucronate, scarious-margined, soft spines only present near base; corolla 6-6.5 cm long, deep pink, glabrous, funnel-shaped, limb unlobed, 4-5 cm diam. Capsules and seeds not seen.

Illustration.

Figure 3C .

Distribution.

Pine woodland from 1500 to 2000 m. Endemic to Oaxaca.

MEXICO. Oaxaca: Abasolo, Santa Rosa Buenavista, A. Saynes 627 (IEB); San Felipe Tejalapa, M. Cruz 133 (IEB).

Note.

Resembling Ipomoea crinicalyx and allies in the fleshy spines on the calyx but the long thick pedicels are somewhat reminiscent of I. setosa . The solitary flowers and ovate, cordate, glabrous, spineless leaves render this species very distinct.

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.