Ipomoea cuneifolia Meisn. in Martius et al.

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

39. Ipomoea cuneifolia Meisn. in Martius et al. , Fl. Brasil. 7: 245. 1869. (Meisner 1869: 245)

Ipomoea cuneifolia var. acutifolia Meisn. in Martius et al. , Fl. Brasil. 7: 245. 1869. (Meisner 1869: 245). Type. BRAZIL. Minas Gerais, Lagoa Santa, E. Warming [1757] (holotype BR00005307227, isotype C, n.v.).

Type.

BRAZIL. Goiás, 17/1/1829, W.J. Burchell 8501-2 (holotype BR0000006972578, isotype K).

Description.

Erect undershrub to 1.5 m, stem woody, hispid-pilose with multicelular hairs, roots tuberous. Leaves subsessile, 3-6 × 1.2-2 cm oblong-oblanceolate, apex rounded and mucronate, base cuneate and slightly asymmetric, adaxially densely grey-pubescent, abaxially hispid-hirsute and gland-dotted; petioles 0-5 mm. Inflorescence terminal, simple, short to somewhat elongate, formed of shortly pedunculate cymes from the uppermost leaf axils; peduncles 0.5-1 cm, diminishing in size upwards; bracteoles up to 6 × 2 mm, linear-lanceolate, caducous; pedicels 3-5 mm so cymes congested; sepals 5-7 mm, ovate-elliptic, obtuse, grey-tomentellous, similar, slightly accrescent in fruit; corolla c. 4 cm long, funnel-shaped, pink, appressed pilose, limb c. 3 cm diam., shallowly lobed. Capsules c. 10 × 6 mm, narrowly ovoid, glabrous; seeds woolly.

Distribution.

Scattered through the cerrados of central Brazil (most common in Mato Grosso), extending west to a single location in eastern Bolivia.

BRAZIL. Goiás: Aragarças, D. Philcox & Ferreira 4030 (K); Novo Alegre-Taguatinga, J.R.Pirani et al. 1909 (K, SPF); G. Gardner 3904 (K); Natividade, G. Gardner 3353 (K); H.S. Irwin et al. 32032 (NY). Mato Grosso: C.A.M. Lindman 3313 (S); G. Hatschbach 34008 (MBM); J. Ratter et al. 4129 (E); Novo Mundo, P. Est. Cristalino, D. Sasaki et al. 1907 (K); Santa Cruz do Xingu, J.H. Piva & V. Marine 56 (K, RB); Xavantina, D. Philcox et al. 3170 (K, MO, P), 3604 (K, MO, NY, P), 4367 (K, MO, P, S); ibid., R.M. Harley & Souza 11048 (K). Mato Grosso do Sul: Pott & Pott 6701 (CPAP); Coxim, G. Hatschbach 34008 (MBM, MO). Tocantins: Reserva Indigena Krahó, A. Amaral-Santos 722 (CEN); Paraná, G. Pereira-Silva 11546 (CEN). In Flora do Brasil 2020 under construction Ipomoea cuneifolia is recorded from Pará and Maranhão, but we have seen no specimens and these records require confirmation.

BOLIVIA. Santa Cruz: P.N. Noel Kempff Mercado, E. Gutiérrez 1144 (ARIZ, USZ).

Note.

Close to Ipomoea haenkeana but leaves <2 cm wide, densely pubescent adaxially and inflorescence simple, side branches absent or very short so raceme-like in form.