162 ON SOUTH-AMERICAN APOCYNACE X. 
oblong, subcordate, cuspidate, coriaceous, with revolute margins, rough above, velvety 
beneath, with oblique nerves and transverse veins, 14-84 in. long, 10-18 lines broad, on 
petioles 1-2 lines long; racemes terminal or axillary, glabrous, as long as the leaves, 
bearing 3-5 purplish red flowers 2 in. long, on pedicels 12 lines long; sepals subulate, 
glabrous, 6 lines long, having 2 internal, basal, bifid scales; tube of corolla 13 in. long, 
much narrowed at the base as far as the middle, thence funnel-shaped ; segments rhom- 
boidally orbicular, crispate along the edge; 2 follicles 34 in. long. 
9. Micrapenta Moricanpiana, A. DC. l. c.p. 486: Dipladenia Moricandiana, Müll. l. c. p. 129. In 
Brasilia, prov. Bahia : non vidi. 
A species distinguished by its smaller leaves on short petioles, and smaller flowers; 
subscandent, slender branches, puberulous above with short retrorse hairs; approxi- 
mate axils much incrassate, and charged on each face between the petioles with 
4 warty ovate glands 13 line long; leaves obovate, obtuse at the base, mucronate, 
coriaceous, fuscous, glabrous, nerved but veinless, 1-13 in. long, 6-9 lines broad, on pu- 
berulous petioles 2 lines long; racemes axillary, glabrous, longer than the leaves, bearing 
2 or 3 yellow flowers on thick, rigid, spirally twisted pedicels 6 lines long; sepals subu- 
lately ovate, 13 line long, each with 2 inner basal bifid scales; tube of corolla 1 in. long, 
contracted at the base below the middle, swelling in a funnel-shape above ; segments 
obscurely ovate, dolabriform, with undulated margins; stamens inserted in the contraction 
of the tube; disk of 2 rounded lobes much shorter than the 2 ovaries. 
10. MICRADENIA FRAGRANS, nob. : Echites fragrans, Stadelm. Bot. Zeit. 1841, p. 71: Dipladenia fragrans, 
A. DC. I. c. p. 483: Müll. Z. c. p. 130, tab. 39. In Brasilia, prov. Bahia: non vidi. 
A. species near the preceding, but with more rigid and straighter branches, and larger 
flowers. Its branches are glabrous, terete, much incrassate at the axils, which are 2-2) 
in. apart, and charged on each side, between the petioles, with about 8 large, subulate, 
warty glands soon caducous ; leaves elliptic or obovate, rounded or obtuse at the base, 
suddenly acuminate at the summit, chartaceous, smooth, reddish green, 23-84 in. long, 
13-2 in. broad, on slender petioles 9-10 lines long; racemes terminal or axillary, on a 
peduncle 1 in. long, bearing upwards about 7 white flowers on alternate pedicels 12-15 
lines long; sepals ovate-acuminate, 2 lines long, with 2 inner basal bifid scales ; tube of 
corolla 18 lines long, narrowed at the base for one third of its length, thence swelling ina 
campanular form toa breadth of 8 lines in the mouth ; segments rhomboidally ovate, dola- 
briform, mucronate, 18 lines long, 12 lines broad; stamens seated in the contraction of 
the tube, with purplish anthers, having at their base 2 parallel obtuse prongs as long as 
the filaments; disk of 2 rounded lobes 4 the length of the 2 ovate ovaries ; follicles 94 in. 
long, 13 line thick. Müller mentions a variety from the province of Minas, with ternate 
leaves, which may be regarded as a distinct, undescribed species. 
11. MICRADENIA ACUMINATA, nob: Dipladenia acuminata, Hook. Bot. Mag. tab. 4828: Müll, /. c. p. 129 
In Brasilia, montib. Organ.; in caldario culta: non vidi. 
This splendid species is only known from a plant received from the Organ Mountains, 
