Ipomoea microdonta

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

201. Ipomoea microdonta J.R.I. Wood & Scotland, Kew Bull. 72 (45): 8. 2017. (Wood and Scotland 2017c: 8)

Ipomoea cavanillesii sensu Sauvage (1870) and Sauget and Liogier (1957).

Type.

CUBA. Camargüey, 2-7 April 1912, N.L. Britton, E.G. Britton & J.F. Cowell 13178 (holotype NY, isotype MO).

Description.

Slender twining perennial; stems thin, wiry, woody, minutely asperous. Leaves petiolate, borne on small brachyblasts, 3-foliate, leaflets 3-10 × 1-5 mm, obovate-oblanceolate, apex obtuse to retuse, base cuneate, margin undulate, adaxially thinly hirsute, abaxially glabrous; petioles 2-8 mm. Inflorescence of solitary, axillary, pedunculate flowers; peduncles short, 1-2 mm; bracteoles caducous; pedicels 4-6 mm, glabrous; sepals unequal, outer 4-5 × 3 mm, elliptic-obovate, obtuse, smooth, glabrous, margins scarious, inner 6-7 × 4 mm, elliptic, rounded; corolla pink, funnel-shaped, glabrous, c. 3 cm long; limb 1-1.5 cm diam., stamens and style included. Capsules c. 9 × 6 mm, ovoid, rostrate, glabrous; seeds 4 × 2.5 mm, blackish, glabrous but with dense long marginal hairs 5-10 mm in length.

Illustration.

Figure 104 .

Distribution.

Endemic to Cuba growing in sandy plain near Camagüey.

CUBA. Sine loc., C. Wright 3086 (K). Camargüey: La Ciega, Caobillas, J. Acuña 1540 (HAC); Sabana de Croms, Bro. León & M. Victorin 17641 (HAC); Guaímaro, al norte de Monte Grande, R. Berzaín et al. (HAJB31501).

Note.

This species has been identified as Ipomoea cavanillesii , a synonym of I. cairica . It has nothing to do with I. cairica and from the structure of the sepals and the leaf shape, it is probably closest to Ipomoea eggersiana .

Figures

Figure 104. Ipomoea microdonta. A habit B leaf C terminal leaflet D calyx E seed. Drawn by Rosemary Wise from N. L. Britton et al. 13178.