Ipomoea calophylla C. Wright ex Griseb.

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

194. Ipomoea calophylla C. Wright ex Griseb. , Cat. Pl. Cub. 204. 1866. (Grisebach 1866: 204)

Ipomoea lacteola House , Ann. New York. Acad. Sci. 18 (6): 229. 1908. (House 1908b: 229), nom. superfl. Type based on I. calophylla C. Wright ex Griseb.

Type.

CUBA. C. Wright 3098 [1651] (holotype GOET000348, isotypes BM, G, GH, HAC, K, S, US, YU).

Description.

Climbing perennial; stems tomentose, twining when young, eventually woody. Leaves petiolate, 0.8-4.2 × 1-1.8 cm, oblong or oblong-ovate, obtuse to retuse, mucronate, base truncate to cordate, adaxially green, tomentellous, abaxially white-tomentose; petioles 0.6-1.8 cm, tomentose. Inflorescence of solitary flowers, usually developing on short dense bracteate lateral branches, the bracts resembling small leaves; peduncles up to 1-1.3 cm, tomentose; bracteoles 4-9 × 1-2 mm; filiform, tomentose; pedicels 2-4 mm; sepals 10-16 × 7-9 mm, broadly oblong-elliptic, obtuse, tomentose; corolla 5-5.5 cm long, funnel-shaped, glabrous, pale pink, limb shallowly lobed, 4 cm diam.; stamens unequal, included. Capsules c. 11 × 6 mm, ovoid, glabrous; seeds 5-6 × 4 mm, long-pilose with hairs to 10 mm long.

Distribution.

Endemic to Cuba and restricted to woodland in the west.

CUBA. Pinar del Río: Bro. Alain & J. Acuña 2296 (HAC); Bro. León 13206 (HAC, HAJB); Van Hermann 15536 (HAC).

Notes.

The corolla is larger and more funnel-shaped than in Ipomoea argentifolia and I. fuchsioides and the stamens are included. It is also similar to Ipomoea jalapoides but the stamens are included and the sepals are also larger. The short dense lateral flowering branchlets are very characteristic.

For discussion about the use of the name Ipomoea calophylla , see Wood and Scotland (2017c).