Ipomoea pseudomalvaeoides Chodat & Hassl.

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

12. Ipomoea pseudomalvaeoides Chodat & Hassl. , Bull. Herb. Boiss., ser. 2, 5: 691. 1905. (Chodat and Hassler 1905: 691)

Ipomoea pseudomalvaeoides forma sericea Chodat & Hassl. , Bull. Herb. Boiss., ser. 2, 5: 691. 1905. (Chodat and Hassler 1905: 691). Type. PARAGUAY. [ Canindeyú], Apepú, E. Hassler 4345 (lectotype G00175054, designated here; isolectotypes BM, G, K, NY, P).

Ipomoea pseudomalvaeoides forma palmata Chodat & Hassl., Bull. Herb. Boiss. , ser. 2, 5: 691. 1905. (Chodat and Hassler 1905: 691). Type. PARAGUAY. San Pedro, Río Corrientes, E. Hassler 5840 (lectotype G00175060, designated here; isolectotypes G).

Ipomoea pseudomalvaeoides forma trispathulata Chodat & Hassl. , Bull. Herb. Boiss., ser. 2, 5: 691. 1905. (Chodat and Hassler 1905: 691). Type. PARAGUAY. Canindeyú, Río Carimbatay, E. Hassler 4540 (lectotype G00175052, designated here; isolectotypes BM, G).

Type.

PARAGUAY. San Pedro, Río Corrientes, E. Hassler 5857 (lectotype G00175058, designated here; isolectotypes, F, G, K, NY, P, UC).

Description.

Erect herb to 0.75 cm from a xylopodium; stems adpressed pilose. Leaves subsessile, mostly trifurcate but occasionally simple above, base cuneate, segments (and simple leaves) 4-10 × 0.5-1.7 cm, oblong-oblanceolate, acute, mucronate, adaxially with scattered long, appressed hairs, abaxially the veins and margins pilose with white appressed hairs, the intercostal areas glabrous; petioles 0-6 mm, thinly pilose. Inflorescence of solitary pedunculate flowers from the upper leaf axils; peduncles 0-35 mm, diminishing in length upwards, adpressed pilose; bracteoles early caducous, not seen; pedicels 4-5 mm, very constant in length, adpressed pilose; sepals slightly unequal, outer 9-15 × 3-4.5 mm, ovate, acute, adpressed pilose, inner similar but with broad, glabrous, scarious margins; corolla 7-9 cm long, pink, pubescent, funnel-shaped, limb 5-6 cm diam., undulate. Capsules and seeds not seen.

Distribution.

Scrubby cerrado. Probably endemic to Canindeyú and neighbouring parts of San Pedro departments in Paraguay.

PARAGUAY. Canindeyú: Mbaracayú Natural Reserve, E. Zardini & I. Chaparro 50723 (ARIZ, AS, MO), 60302 (MO), 60327 (MO); E. Zardini & S. Ramírez 51089 (ARIZ, AS, MO), 51288 (ARIZ, AS, MO); A. Schinini & M. Dematteis 33313 (CTES, FCQ, MO); Reserva de Campo Comunal del asientamiento Mandu’ara, O.A. Torres Figueredo 43 (FCQ); 25 km W of Curuguaty, J.R.I. Wood & G. González 28465 (FCQ). San Pedro: south of Arroyo Gasory, S. Keel & L. Spinzi 1738 (FCQ).

Notes.

The exact location of Apepú is uncertain. The name refers to a citrus fruit and appears as a place name for a number of different locations.

Ipomoea pseudomalvaeoides is very close to I. malvaeoides and may prove to be only a variety of it but it has distinctive longer sepals and is restricted geographically to Canindeyú and the surrounding area.