Ipomoea procurrens 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

345. Ipomoea procurrens Meisn. in Martius et al. , Fl. Brasil. 7: 254. 1869. (Meisner 1869: 254)

Ipomoea procurrens var. pilosula Chodat & Hassl., Bull. Herb. Boiss. , ser. 2, 5: 692. 1905. (Chodat and Hassler 1905: 692). Type. PARAGUAY. [San Pedro]. E. Hassler 5873 (lectotype G00175045, designated here; isolectotypes BM, G, K, MO, MPU, P, S, UC).

Type.

BRAZIL. Minas Gerais, 1845, J.F.Widgren 302 (lectotype BR000005307715, designated here; isolectotypes K, M, R, S).

Description.

Decumbent, ascending or erect plant with xylopodium, stems somewhat woody, glabrous or, especially on young stems, shortly pubescent. Leaves very shortly petiolate, 2.3-6.5(-14) × 0.6-5.5 cm, very variable in size and shape fom plant to plant, lanceolate, ovate, narrowly or broadly oblong, apex retuse, obtuse or rounded and mucronulate, base broadly cuneate to rounded, slightly asymmetric, both surfaces usually glabrous, veins prominent abaxially; petioles 3-8 mm. Inflorescence of pedunculate, 1-3-flowered cymes from upper leaf axils; peduncles 2-30 mm, glabrous to densely pubescent; bracteoles 4-5 mm, narrowly deltoid; pedicels 5-20 mm, longer than peduncles, sometimes muricate; sepals unequal, outer sepals 7-13 mm, lanceolate to ovate, acuminate to obtuse and mucronate, muricate; inner sepals 11-18 × 4-6 mm, lanceolate to ovate, obtuse and mucronate; corolla 6-7 cm long, funnel-shaped, pink, glabrous, limb c. 5 cm diam., unlobed. Capsules and seeds not seen.

Illustration.

Figure 6F .

Distribution.

A characteristic cerrado species of the planalto of central Brazil extending to Bolivia and Paraguay.

PARAGUAY. Amambay: E. Hassler 9760 (BM, K, S); A. Krapovickas et al. 45908 (CTES, K); N. Soria 7683 (FCQ); A. Schinini et al. 36061 (CTES). San Pedro: E. Zardini & S. Zavala 46794 (MO).

BRAZIL. Dist. Fed.: Ferreira 174 (IBGE, K); H.S. Irwin 26635 (MO, NY, RB, W). Goiás: Cristalina, J.R. Pirani 1528, 1614 (K, SPU); Serra da Ortiga, G. Hatschbach 33324 (MO, RB); Niquelândia, B. Walter 1382 (CEN, RB); Ituiutaba, A. Macedo 31 (MO, NY, R); Alto Paraíso, W.R. Anderson 6235 (NY). Mato Grosso: 27 km N of Xavantina, D.R. Gifford 82 (K); 4.5 km S of Xavantina, D. Philcox & A. Ferreira 3737 (K); 60 km N of Xavantina, H.S. Irwin et al. 15983 (MO, NY); Pedro Gomes, G. Hatschbach 37422 (RB). Mato Grosso do Sul: A. Krapovickas & C. Cristóbal 34305 (CTES, G); E.P. Heringer et al. 934 (IBGE, FTG). Minas Gerais: A.A. Arbo et al. 3188 (CTES, K); Morro das Pedras, H.S, Irwin et al. 25559 (MO, NY); Serra do Rio Preto, H.S. Irwin 10298 (NY); Formoso, M.A. da Silva 3680 (RB). São Paulo: C.W. Mosén 4284 (S).

BOLIVIA. Santa Cruz: Velasco, P.N. Noel Kempff Mercado, W.W. Thomas et al. 5595 (FTG, NY); J.R.I. Wood et al. 25231 (K, LPB, UB, USZ).

Notes.

Although rather variable in habit and in leaf and sepal shape this species is usually recognised easily by the shortly petiolate, oblong to ovate leaves with a cuneate base and the distinctive muricate outer sepals.

The type of var. pilosula is very atypical with large flowers and scarcely muricate sepals. It is one of a number of atypical specimens found by Hassler in Paraguay but never recollected.

Figures

Figure 6. Sepals of Ipomoea species. A I. argyreia B I. tricolor C I. argentea D I. syringiifolia E I. eriocalyx F I. procurrens G I. tarijensis H I. regnellii. Photographs of A (Mendoza 4899); C (Mendoza 4705) and F (Mendoza 4900) by Moises Mendoza; B (Wood & Soto 27960) and H (Wood & Soto 27951) by Daniel Soto; D by Hector Keller; E (Wood et al. 27809) by Beth Williams; G (Wood 27920) by John Wood.