Ipomoea tacambarensis Carranza

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

277. Ipomoea tacambarensis Carranza , Sida 20: 1351. 2003. (Carranza 2003: 1351)

Type.

MEXICO. Michoacán, Tacámbaro, E. Carranza & V.W. Steinmann 6393 (holotype IEB000164902, isotypes CAS, IEB, MEXU, MICH, TEX, XAL).

Description.

Clearly resembling Ipomoea stans in the distinct leaves and erect habit but differing as follows. Perennial herb with stout, erect stems to 2.2 m. Leaves distinctly petiolate, mostly 16-30 × 12-24 cm; petioles mostly 2-4.5 cm. Inflorescence of axillary and terminal cymes with 5-15 flowers, appearing a many-flowered panicle; peduncles 9-18 cm; bracteoles 12-17 mm long, oblong-lanceolate, caducous; pedicels 12-30 mm long; sepals subequal, scarious, 15-17 mm, oblong-ovate, usually glabrous; corolla 7-9 cm long, deep red., presumably glabrous.

Ilustration. Carranza 2003: 1352.

Distribution.

Endemic to the Balsas depression area in Michoacán State in central Mexico.

MEXICO. Michoacán: Tacámboro, Punta de la Loma-Paso de Morelos, Carranza & V.W. Steinmann 6397 (IEB).

Note.

Resembles a large vigorous form of Ipomoea stans .