Ipomoea syringifolia 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

publication ID

https://dx.doi.org/10.3897/phytokeys.143.32821

persistent identifier

https://treatment.plazi.org/id/407D6E9E-3165-9153-43EE-64AEFDBE0CF4

treatment provided by

PhytoKeys by Pensoft

scientific name

Ipomoea syringifolia Meisn. in Martius et al.
status

 

371. Ipomoea syringifolia Meisn. in Martius et al. View in CoL View at ENA , Fl. Brasil. 7: 270. 1869. (Meisner 1869: 270)

Type.

BRAZIL. Minas Gerais, Caldas, A.F. Regnell III 199 bis (S12-2168, lectotype designated here; isolectotype S).

Description.

Perennial, liana-like climber reaching many metres, stems glabrous, woody. Leaves petiolate, 3.5-9 × 1.5-4 cm, ovate, shortly acuminate, subtruncate to shallowly cordate, glabrous, abaxially glaucous; petioles 1-4 cm, slender. Inflorescence of shortly pedunculate axillary cymes, often laxly racemose in form and pendulous; peduncles 1-4 cm, very slender; bracteoles caducous, not seen; pedicels 1.5-2.5 cm, often exceeding peduncles; sepals unequal, glabrous, scarious-margined, outer sepals 6-9 × 4 mm, elliptic, obtuse, inner 9-10 × 4-5 mm, broadly elliptic, rounded; corolla 4-5 cm long, lemon-yellow, glabrous, abruptly widened above base so appearing inflated, limb c. 3 cm diam., shallowly lobed. Capsules ovoid, 12-13 × 7-8 mm, glabrous; seeds 5 × 3 mm, pilose with reddish hairs 6-8 mm long.

Illustration.

O’Donell (1959b: 248); Figures 6D View Figure 6 , 8N View Figure 8 , 180 View Figure 180 .

Distribution.

Atlantic forest and Paraná forest relics; southern Brazil and neighbouring parts of Paraguay and Argentina.

ARGENTINA. Misiones: Dept. Eldorado, S.G. Tressens et al. 5570 (CTES, K); Dept. San Pedro, H. Keller & Franco 9717 (CTES, MO).

PARAGUAY. Alto Paraná: Stutz de Ortega 1426 (G).

BRAZIL. Espirito Santo: Anchieta, A. Stival-Santos 555 (RB). Minas Gerais: A. Glaziou 18382 (K); Viçosa Agric. College, Y. Mexia 4430 (BM, K, MO, S); Caldas, C.W. Mosén 4494 (S). Paraná: Mun. Cel. Vivida, G. Hatschbach 26375 (CTES, MBM, K, S); Rio Branco do Sul, J.M. Silva & G.L. Esteves 1304 (MBM); Therezina, P. Dusen 11146 (GH, NY, S); Faz. Reserva, J.C. Lindeman & J.H. de Haas 4684 (K). Rio de Janeiro: Petropolis, C. Goes & Constantino 3 (RB); Organ Mts, J. Miers s.n. (BM); A. Glaziou 8819 (K). Santa Catarina: F. Plaumann 433 (RB). São Paulo: Heiner 432 (S); J. Weir 506 (K); Martius s.n. (M).

Typification.

None of the original syntypes in LE, K, M and S are very satisfactory, either lacking corollas or with badly eaten leaves. The lectotype selected here is probably the best from a not very high quality selection of specimens.

Note.

This is a distinctive species because of the very lax inflorescence and the pendulous, yellow-green campanulate corollas which are abruptly inflated at the apex of the calyx.