Ipomoea veadeirosii

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

99. Ipomoea veadeirosii J.R.I. Wood & Scotland, Phytokeys 88: 30. 2017. (Wood et al. 2017d: 30)

Type.

BRAZIL. Goiás, Chapada de Veadeiros, 42 km N. of Alto do Paraíso, H.S. Irwin, R.M. Harley & G.L. Smith 33148 (holotype FTG, isotype?NY, n.v.).

Description.

Twining liana to c. 3 m; stem stout, somewhat woody, densely tomentose. Leaves petiolate, 5-11 × 4-9 cm, ovate, shallowly cordate to subtruncate with rounded auricles, margin undulate, apex obtuse and shortly mucronate, the mucro rather stout, adaxially yellow-green, tomentose, glabrescent when old, abaxially grey-tomentose, the veins highlighted; petioles 0.5-4 cm, tomentose. Inflorescence of flowers borne on axillary bracteate branchlets; bracts 2-2.5 × 1-1.7 cm, ovate, tomentose; cymes 1-2-flowered; peduncles 1-6 cm, tomentose; secondary peduncles pedicel-like, 0.8-1.7 cm, pubescent, more slender than primary peduncles; bracteoles 2-2.3 × 0.8-1.4 cm, narrowly elliptic, obtuse, somewhat boat-shaped, tomentose, persistent and ± clasping the calyx; pedicels 1-4 mm, glabrous; sepals subequal, 11-13 × 5-7 mm, elliptic, obtuse to rounded, outer glabrous, margins scarious; corolla 6-7 cm long, narrowly funnel-shaped, glabrous, deep pink. Capsules and seeds unknown.

Illustration.

Figure 65 .

Distribution.

Endemic to rocky cerrado (campo rupestre?) at 1250-1700 m in the Chapada de Veadeiros in central Brazil.

BRAZIL. Goiás: Chapada de Veadeiros, 25 km N of Alto Paraíso, 1700 m, W.R. Anderson et al. 6691 (FTG,?NY, n.v.).

Note.

Although we have not been able to sequence this species, Ipomoea veadeirosii appears to belong to the small clade where Ipomoea descolei O'Donell and I. calyptrata Dammer belong. All these species are somewhat woody and liana-like and share a densely tomentose indumentum. The inflorescence structure with a tendency for the inflorescence to develop on foliose branchlets is found in a number of woody species, notably the Arborescens group. Ipomoea veadeirosii appears closest to I. calyptrata because of the persistent bracteoles which are appressed to the calyx with the pedicel supressed. It differs most obviously in the glabrous corolla, near glabrous sepals and the roughly tomentose indumentum, which differs from the white tomentellous indumentum of the stem, leaves, bracteoles, sepals and corolla exterior of Ipomoea calyptrata .

Figures

Figure 65. Ipomoea veadeirosii. A habit B abaxial leaf surface C bracteole D outer sepal E inner sepal. Drawn by Rosemary Wise A, B from H. S. Irwin et al. 33148; C-E from W. R. Anderson et al. 6691.