Ipomoea sp. B (E. Hassler 6760)

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

34. Ipomoea sp. B (E. Hassler 6760)

Description.

Subshrub 1-1.5 m high; stems adpressed pubescent. Leaves very shortly petiolate, 4-15.5 × 1.5-7 cm, ovate to ovate-elliptic, apex obtuse and shortly mucronate, base broadly cuneate, both surfaces thinly pubescent, green, abaxially slightly paler; petioles 0-5 mm, puberulent. Inflorescence of axillary cymes, occasionally compounded or reduced to single flowers; peduncles 0.8-3.8 cm, stout, puberulent; bracteoles 1-2 mm long, ovate, caducous, puberulent; secondary peduncles 0.3-1.8 cm; pedicels 4-14 mm, puberulent; sepals subequal, ovate-elliptic, outer 6-7 × 3.5-4 mm, obtuse and shortly mucronate, puberulent with narrow scarious margins; inner c. 1 mm longer, rounded, pubescent with broad, glabrous, scarious margins; corolla c. 6 cm long, pink, funnel-saped, pubescent in bud; limb 4-4.5 cm diam. Capsules and seeds not seen.

Distribution.

Only known from a single collection.

PARAGUAY. Cordillera: E. Hassler 6760 (BM, F, MO, P, S).

Note.

Ipomoea sp. B is most similar to Ipomoea cerradoensis but is easily distinguished by its pink corollas, woody stems, much larger leaves and, sometimes, compounded inflorescence. It also resembles Ipomoea paludosa in the simple leaves and form of the sepals but is distinguished by the clearly woody stems, large, ovate leaves and, especially, by the lateral, not terminal inflorescence. It was originally named I. malvaeoides var. ovata by Chodat and Hassler (1905: 690).