Mandevilla apocynifolia (A. Gray) Woodson

Mandevilla apocynifolia (A. Gray) Woodson, Ann
Mo. Bot. Gard. 19: 65. 1932.
Echites apocynifolia A. Gray, Proc. Am. Acad. 22: 435. 1887.
Erect, or ascending suffrutescent herb; leaves membranaceous, ovate-oblong to ovatelanceolate, 4-7 cm. long, 1.5-2 cm. broad, acute to acuminate, rather abruptly and obscurely cordate at the base, glabrous above, minutely puberulent beneath, particularly along the veins, the petioles 2-3 mm. long; inflorescence alternate-axillary, simply racemose, somewhat longer than the leaves, bearing 3-10 white or palecreamcolored flowers; pedicels 10-12.5 mm. long; calyx-lobes lanceolatetriangular, acuminate, 4-5 mm. long, glabrous, the squamellae numerous and indeflnitely distributed; corolla salverform, glabrous externally, the tube 10-12.5 mm. long, about 1.5 mm. in diameter at the base, the lobes obliquely obovate, about as long as the tube, spreading; stamens inserted about the middle of the corolla-tube, the anthers 3 mm. long; nectaries about as long as the ovary; follicles falcate, articulate, 6-9 cm. long, minutely puberulent to glabrate.
Type locality: Rio Blanco, Jalisco. Distribution: Jalisco.