Ipomoea bernoulliana Peter

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

295. Ipomoea bernoulliana Peter , Nat. Pflanzenfam. 4 (3a): 30. 1897 [1891]. (Peter 1891: 30

Rivea bernoulliana (Peter) Hallier f., Bot. Jahrb. Syst. 18: 158. 1894 [pub.1893]. (Hallier 1893b: 158).

Ipomoea santae-rosae Standl. & Steyerm., Publ. Field Mus. Nat. Hist. , Bot. Ser. 23 (2): 81. 1944. Type. GUATEMALA. Santa Rosa , vic. Chiquimulilla, P.C. Standley 79287 (holotype F0054894).

Type.

GUATEMALA. Bernoulli & Cario 1902 (lectotype GOET002541, designated by Staples and Austin 2010: 467).

Description.

Slender liana to c. 5 m, stems woody, pubescent when young, glabrescent. Leaves petiolate, 4-10 × 3-7 cm, ovate, cordate with rounded auricles, apex finely acuminate and mucronate, margin undulate to slightly denticulate, adaxially glabrous, abaxially pubescent to subglabrous with hairs only at intersection with petiole; petioles 1.5-7 cm, glabrous. Inflorescence of solitary, long-pedicellate, axillary, flowers, often arising on axillary branchlets; peduncles 2-5 mm, pubescent or glabrous; bracteoles 2 mm, deltoid, scarious, caducous; pedicels 2.5-3.3 cm, relatively slender, glabrous; sepals unequal, acute or ± oblong, obtuse mucronate, chartaceous with narrow, scarious margins and prominent longitudinal veining, glabrous, outer 18-21 × 4 mm, strictly oblong, inner 22-30 × 6-7 mm, oblong-oblanceolate; corolla 6-8 cm long, pinkish-purple, glabrous, funnel-shaped, limb c. 4 cm wide, shallowly lobed. Capsules 8-12 mm, globose, glabrous; seeds 7-10 mm, puberulent.

Illustration.

Figures 3B , 144 .

Distribution.

An infrequently collected species of Central America growing in disturbed forest, mostly at altitudes below 1000 m.

COSTA RICA. San José, Mora, Ciudad Colón, M.H. Grayum & N. Zamora 9667 (MO); ibid., El Rodeo, A. Cascante 1381 (CR, K).

NICARAGUA. Estelí, Condega, P.P. Moreno 23480 (MO); Madriz, Las Sabanas, W. D. Stevens et al. 26942 (HULE, MO).

HONDURAS. Morazán, San Antonio de Oriente, P.C. Standley 27496 (BM, F); ibid., Tegucigalpa, C. Nelson 3925 (BM); San Joséde Comayagua A. Molina et al. 31459 (MO).

EL SALVADOR. Usulután, Laguna de Alegría, D. Williams 145 (MO); La Libertad, A. K. Munro et al. 3737 (BM, MO).

GUATEMALA. Sacatepéquez, Alotenango, J.J. Mont & J.M. Vargas 2725 (MO, NY).

MEXICO. Chiapas: Berriozábal, D. Breedlove 23051 (MO).

Note.

Very distinct because of the finely acuminate leaves, short peduncles combined with long pedicels, solitary flowers and long oblong, chartaceous, veined sepals.

Figures

Figure 3. Sepals of Ipomoea species. A I. pauciflora B I. bernoulliana C I. tentaculifera D I. hartwegii E I. murucoides F I. pantanalensis G I. hederacea H I. funis. Photographs of A (Harling et al. 15403) B (Standley 27496) C (Pringle 6702) D (Santos Martinez 2228 E (Pringle 6066) F (Pott 6399) G (McCarthy s. n.) H Andrieux 600 by John Baker.

Figure 144. Ipomoea bernoulliana A habit B adaxial leaf surface C abaxial leaf surface D outer sepal E middle sepal F inner sepal G corolla opened out to show stamens H ovary and style J seed. Drawn by Rosemary Wise A-H from Standley 27496; J from Nelson 3925.