Ipomoea anisomeres B.L. Rob. & Bartlett

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

381. Ipomoea anisomeres B.L. Rob. & Bartlett , Proc. Amer. Acad. Arts 43: 57. 1907. (Robinson and Bartlett 1907: 57)

Ipomoea anisomeres var. sagittiformis L.O. Williams, Fieldiana , Bot. 32: 185. 1970. (Williams 1970a: 185). Type. GUATEMALA. Izabal, J. Steyermark 38485 (holotype F0054821).

Type.

GUATEMALA. C.C. Deam 318 (lectotype GH00054484).

Description.

Entirely glabrous, twining perennial or liana; stems often granulose. Leaves petiolate, 3-8 × 1.5-6 cm, oblong-ovate to ovate, acute, base cordate, the auricles acute or rounded, abaxially paler; petioles 2-6.5 cm. Inflorescence of rather dense axillary pedunculate cymes; peduncles 5-10 cm; bracteoles ovate, c. 2 mm, caducous; pedicels short, 0.5-1.7 cm; sepals unequal, outer 1-3 × 2-3 mm, suborbicular to elliptic, the margin scarious, inner 7-8 × 3-4 mm, oblong-elliptic, rounded; corolla 5-6 cm long, funnel shaped, white with a purple tube, glabrous, limb c. 5 cm diam., the midpetaline bands terminating in small teeth. Capsules ovoid, 8-9 × 6-7 mm, glabrous, rostrate, the persistent style 4-5 mm long; seeds 7 × 4 mm, densely white-pubescent.

Distribution.

Lowland forests in Central America south to northern Peru.

PERU. San Martín: near Juanjui, A. Gentry et al. 37646 (MO, USM).

COLOMBIA. Córdoba: Montería, B. Anderson 1835 (K). Magdalena: Naranjo, E. André 371 (K).

VENEZUELA. Fide Hokche et al. (2008).

PANAMA. H. Pittier 2704 (S).

COSTA RICA. Guanacaste, NW of Paloverde N. Garwood et al. 553 (BM).

NICARAGUA. Chontales, Puente Monato, W.D. Stevens 19059 (BM, MO); ibid., Cuapa, W.D. Stevens 6065 (BM, MO).

HONDURAS. Copán Ruins-Santa Rita, A. Molina 24693 (F); Santa Bárbara, Lago de Yojoa, S. Blackmore & M. Chorley 3712 (MO).

BELIZE. Orange Walk, Tower Hill, A.H. Gentry 8517 (FTG, MO).

GUATEMALA. Petén, P.N. Tikal, R. Tun Ortíz 693 (BM, MO); Friedrichsthal s.n. (K).

MEXICO. Campeche: Champotón, E. & H. de Cabrera 15203 (BM, IEB, MEXU, MO). Chiapas: Ocosingo, E.M. Martínez 17829 (MO). Oaxaca: Tuxtepec, R.E. Gereau et al. 2226 (MEXU). Quintana Roo: fide Austin et al. (2012). Tabasco: Macuspana, M. A. Magaña & A. Guadarrama 2357 (IEB). Tamaulipas: Tampico, E. Palmer 248 (BM, US). Veracruz: C.R. Orcutt 2997 (BM, K, MO); Temporal-Pánuco, F. Chiang 398 (F, MEXU, MO); Tempoal, H. Puig 4057 (MEXU, P). Yucatán: entrada a Chunchucmil, M. Peña-Chocarro & Tun 417 (BM, MO, UADY).

Notes.

Very close to Ipomoea squamosa , differing in being always glabrous with shorter outer sepals and a white corolla limb. The seeds are densely uniformly pubescent, rather than woolly.

We have been cautious in accepting South American records of this species, which may have been confused with Ipomoea cryptica as well as with I. squamosa .