Ipomoea burchellii 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

83. Ipomoea burchellii Meisn. in Martius et al. , Fl. Brasil. 7: 271. 1869. (Meisner 1869: 271)

Type.

BRAZIL. Goiás: Rio Tocantins, Porto Imperial, W.J. Burchell 8738 (isotype K000612855).

Description.

Subshrub with trailing stems, the whole plant softly tomentose to pubescent. Leaves shortly petiolate, 3-7.5 × 0.4-2 cm, oblong, acute, mucronate, base truncate to cordate, margin often inrolled, adaxially green, pubescent, abaxially whitish, gland-dotted, densely pubescent especially on the veins; petioles pubescent, 2-9 mm. Inflorescence of dense, 1-3-flowered subsessile bracteolate clusters, often reduced to single flowers, forming a subterminal inflorescence; peduncles 3-10 mm densely hirsute; bracteoles 6-13 mm, linear, finely acuminate, pilose; sepals very unequal, outer 15-20 × 5-7 mm, oblong, ovate or oblanceolate, obtuse or rounded and mucronate, long-pilose especially near base, pale green and somewhat foliose, inner 11-12 × 3-4 mm, ovate, acuminate, densely lanate but with glabrous, scarious margins; corolla 5.5-7.5 cm long, very narrowly funnel-shaped, only slightly widened upwards, pink with white tube, pilose, the limb undulate, 2.5-3 cm diam. Capsules c. 8 × 7 mm, subglobose, glabrous; seeds 5 × 3 mm, shortly pilose on the angles.

Illustration.

Figure 51 .

Distribution.

Endemic to the cerrados of north central Brazil.

BRAZIL. Bahia: fide Flora do Brasil (2020). Goiás: 24 km S of Alto Paraíso, H.S. Irwin et al. 21745, (FTG, HUEFS, NY, MO); Itacajá, W.N. Fonseca 109 (RB); Mun. Tupiratins, G. Hatschbach & R. Kummrow 38491 (MBM). Maranhão: Eiten & Eiten 3908 (UB, US); Mun. Mirador, L.P. Féliz 8136 (RB). Mato Grosso: Mun. Colider, I.L. Amaral et al. 835 (ARIZ, FTG, RB). Piauí: Ribeiro Gonçalves, E.M. Saddi et al. 339 (RB). Tocantins: 10 km S. of Guará, H.S. Irwin et al. 21323 (NY, RB, FTG); Mun. Goiatins, S. Pereira-Silva et al. 15352 (CEN).

Note.

The position of this species in the sequence is uncertain.

• The following species (84-127) of Clade A1 are not part of the Jalapa radiation.

Figures

Figure 51. Ipomoea burchellii. A habit B adaxial leaf surface C abaxial leaf surface D leaf and single flower E outer sepal F middle sepal G inner sepal H corolla opened out to show stamens J ovary and style K seed. Drawn by Rosemary Wise A-C, F-J from Irwin et al. 21323; D K from Amaral et al. 835.