Ipomoea pyrenea Taub.

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

31. Ipomoea pyrenea Taub. , Bot. Jahrb. 21: 449. 1895. (Taubert 1895: 449)

Type.

BRAZIL. Goiás, Serra dos Pyreneus, Ule 3011 (holotype B†, isotypes HBG 506564, P03551472, R000040279).

Description.

Erect subshrub to c. 30 cm from a woody xylopodium, stem densely asperous-pilose. Leaves subsessile, 2.5-5 × 0.3-0.7 cm, narrowly oblong-oblanceolate, base narrowly cuneate, apex acute and mucronate, thinly but roughly pilose on margin and veins of both surfaces; petioles <2 mm long. Inflorescence congested, terminal, the flowers solitary, subsessile, from the uppermost leaf axils; peduncles 0-4 mm; bracteoles 7-8 mm, linear-lanceolate, thinly pubescent, ± equalling the sepals; pedicels absent; sepals subequal, 8-10 × 4 mm long, ovate, acuminate, appressed-pilose, inner obtuse to subacute and mucronate, the margins scarious, subglabrous; corolla 3.5-4.5 cm long, funnel-shaped, pink, appressed pilose, limb c. 2 cm diam. Capsules and seeds not seen.

Illustration.

Figure 27 .

Distribution.

Endemic to the Serra de Pireneus in Goiás State, Brazil, growing at relatively high altitudes of 1000-1300 m.

BRAZIL. Goiás: Serra de Pireneus, A.Macedo 3501 (NY); ibid., H.S. Irwin et al. 24377 (NY); ibid., W.R. Anderson et al. 34376 (FTG, NY, SP); ibid., G. Hatschbach et al. 70081 (MBM); ibid., D.P. Saraiva et al. 275 (RB, SP).

Note.

Somewhat similar to Ipomoea aurifolia , but leaves oblong, rather than lanceolate, narrower (<7 mm wide) and much more thinly hairy, outer sepals acuminate and the inflorescence more strictly terminal.

Figures

Figure 27. Ipomoea pyrenea. A habit B abaxial leaf surface C bracteole D outer sepal E middle sepal F inner sepal. Drawn by Rosemary Wise from Irwin et al. 34376.