Ipomoea gloverae

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

320. Ipomoea gloverae J.A. McDonald, Harvard Pap. Bot. 4: 51. 1993. (McDonald 1993b: 51)

Type.

MEXICO. Michoacán, 12 km W. of Aguililla on road to Dos Aguas, F. Barrie, T.P. Ramamoorthy & E. Martínez 568 (holotype TEX00372567, isotype MEXU).

Description.

Twining herb 5-6 m high, stems sparsely pilose. Leaves petiolate, 4-12.5 × 4-11.5 cm, ovate or shallowly 3-lobed, acuminate, base cordate with rounded auricles, glabrous or pilose on the veins; petioles 4-9 cm, pilose. Inflorescence a compound, long-pedunculate axillary raceme with 5-10 flowers; peduncles 21-28 cm, pilose; bracteoles 2-2.5 × 1.5 mm, ovate, apparently caducous; secondary peduncles 0.5-2.5 cm, diminishing in length upwards; pedicels 3-6 mm, glabrous except for a few hairs at base; sepals subequal, 2-2.5 × 1.5 mm, ovate or elliptic, obtuse, but with an awn 5-6 mm long; corolla 2-2.5 cm long, maroon, glabrous, curved above a short basal cylindrical tube, suburceolate, limb reduced to 5 small teeth c. 1 mm long; stamens and style strongly exserted. Capsules and seeds unknown.

Illustration.

McDonald (1993b: 50).

Distribution.

On roadsides around 1200 m in Michoacán in the same general area as Ipomoea fissifolia .

MEXICO. Michoacán: Aguililla, J. González et al. 412 (IEB); ibid., E. Carranza & I. Silva 6665 (IEB)

Note.

The corolla is suburceolate resembling that of Ipomoea lobata but is maroon in colour and the inflorescence is secund, not cymose as stated in the protologue. It is distinguished by the corolla colour, much longer secondary peduncles to 25 mm (not 12 mm) and longer sepal awns.