156 ON SOUTH-AMERICAN APOCYNACEA, 
glabrous, funnel-shaped above; segments broadly dolabriform, acutely uncinate, 13 in. 
long, 1 inch broad; stamens inserted on a pilose ring at the constriction of the tube; 
disk of two rounded subtruncate lobes, half as long as the two ovaries. 
6. DipLaDENTIA ALEXICACA, A. DC. J. c. p. 484: Dipladenia illustris, var. glabra, Müll. L. c. p. 126: 
Echites alexicaca, Stadelm. l. c. p. 68. In Brasilia, prov. Bahia (Blanch. 3382) : non vidi. 
A species with a napiform, tuberous root, throwing out several erect, simple stems; 
leaves obovate-orbiculate, rounded at the base, very shortly acute, 2-21 in. long, nearly 
of the same breadth, on petioles 13 line long; raceme terminal, few-flowered, on bracte- 
ated pedicels 6-10 lines long ; corolla 13 in. long, rose-coloured. 
7. DIPLADENIA ANDROSAMIFOLIA, A. DC. Z. c. p. 484: Dipladenia illustris, var. glabra, Müll. L. c. p. 126. 
In Brasilia, prov. Bahia ad Igreja Velha (Blanch. 3582 in parte) : non vidi. 
An erect, compressed stem, 12 in. high; leaves broadly elliptic, obtuse and cordate 
at the base, cuspidate at the apex, pale green above, glabrous, with many approximate 
parallel nerves, 14 in. long, 1-11 in. broad, on petioles 1 line long; raceme terminal, on 
a peduncle bearing 5-6 rose-coloured flowers, on pedicels 6 lines long, supported by 
lanceolate bracts 2 lines long; sepals lanceolate acuminate, 4 lines long, each with 2 
inner bidentate scales ; tube of corolla 1 in. long, contracted for half its length in a 
cylindrical form ; disk of 2 broadly rounded lobes, half as long as the 2 ovaries. 
8. DIPLADENIA VENULOSA, Müll. l. c. p. 126. In Brasilia, prov. Minas Geraés: non vidi. 
A species near D. sancta : stem 22 lines thick, somewhat thickened at the approximate 
axils; opposite leaves ovate, cordate, subobtuse at the apex, chartaceous, very glabrous, 
with 12-15 pairs of parallel nerves, veins reticulated, 22-41 in. long, 14-22 in. broad, 
on petioles 1 line long; raceme lateral, as long as the leaves, with 3-5 large flowers, on 
pedicels nearly 1 in. long, with bracts 3 lines long; sepals linear-lanceolate, 4-52 lines 
long, with several simple inner scales more or less combined at the base; tube of corolla 
1⁄4 in. long, contracted in a narrow cylinder for 10 lines; segments broadly dolabriform, 
12 lines long, 9 lines broad. 
9. DIPLADENIA ROSA CAMPESTRIS, Lemaire in Van Houtte, Flor. des Serr. iii. 256; Walp. Ann. i. 504: 
Dipladenia illustris, var. pubescens, Müll. l. c. p. 125: Echites rosa campestris, Hügel, Parad. 
Vindob. fasc. 5, eum icon. In Amer. trop.: patria ignota (forsan Brasilia). 
Root tuberous, woody, with erect, simple stems, which (with the leaves) are velvety 
pubescent, and 18 in. high ; leaves oval, with a short, recurved, mucronate point at the 
apex, midrib thickish, with numerous approximately parallel nerves; large, handsome 
flowers, of a pale rose colour; tube campanulate above, yellow within and in the mouth 
stellately striped, 1} in. long, narrowly cylindrical at its base for one third of its length, . 
subcampanular above, glabrous ; segments oblique, dolabriform, shortly uncinate, patent, 
undulate. 
