Ipomoea pintoi O'Donell

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

151. Ipomoea pintoi O'Donell , Lilloa 26: 380. 1953. ( O’Donell 1953a: 380)

Type.

BRAZIL. Bahia, Mun. Muritiba, Faz. Velo-Vale, G.C.P. Pinto 5-1950 (holotype Herb. Inst. Agron. De Léste, isotype (fragment) LIL452194).

Description.

Woody climber to 2 m; stems glabrous, grey, the petiole base persistent and subaculeate, possibly facilitating climbing. Leaves petiolate, 3-5 × 0.7-2.5 cm, oblong-elliptic to oblong-obovate, acute and shortly mucronate, basally cuneate, glabrous, abaxially paler and somewhat glaucous; petioles 5-10 mm, often dark red, glabrous. Inflorescence of many-flowered complex, often compact axillary cymes usually forming a subcorymbose inflorescence on short branchlets; peduncles stiff, woody, often curved, 0.9-4 cm; bracteoles caducous; secondary peduncles 3-9 mm; pedicels 4-13 mm; sepals coriaceous, convex, scarious-margined, glabrous, subequal, outer 5-6 × 3-4 mm, elliptic, obtuse, mucronate, inner 8 × 5 mm, obovate, rounded; corolla 4-6 cm long, funnel-shaped, deep pink, distinctly but shortly lobed with lobes up to 5 mm long; limb 3.5-4 cm diam.; stamens held at mouth. Capsules 12 × 6-7 cm, ovoid, glabrous, shortly rostrate; seeds long-pilose.

Illustration.

Figure 5F .

Distribution.

Characteristic of Caatinga thorn scrub in NE Brazil.

BRAZIL. Bahia: near Morro do Chapaeu, L. Queiroz et al. 15956 (HUEFS); Itatim Rio Milagres, E. Melo et al. 11190 (HUEFS, OXF); Rodovia Juazeiro-Senhor do Bonfim, km 100, L Coradin et al. 5999, (CEN, K). Pernambuco: Buíque, Faz. Laranjeiras, L.S. Figueirêdo & Andrade 108 (IPA). Sergipe: Poço Verde, G. Viana 285 (ASE). Also Alagoas fide Flora do Brasil (2020).

Notes.

A woody climber with glabrous stems somewhat similar to Ipomoea schulziana but differing most obviously in the cuneate-based leaves.

This species has sometimes been confused in herbaria with Ipomoea ana-mariae , from which it is distinguished by its funnel-shaped corolla. Fruiting specimens are therefore difficult to determine.

Figures

Figure 5. Sepals of Ipomoea species. A Ipomoea descolei B I. paraguariensis C I. australis D I. purpurea (left), I. nil (right) E I. incarnata F I. pintoi G I. maurandioides H I. pubescens. Photographs of A by Hector Keller; B and G by T. Carruthers; C (Wood et al. 27708); E (Wood 27756) and H (Wood 27675) by Beth Williams; D by John Pink; F (Queiroz 15956) by Hibert Huaylla.