222 ON SOUTH-AMERICAN APOCYNACEX. 
ovate, dolabriform, acute within the sinister angle, dextrorsely convolute, 9 lines long 
and broad; stamens seated on a retrorsely pilose ring in the contraction of the tube; 
anthers cohering, membranaceous at the apex, obtusely bifurcate at the base, nearly as 
long as the 2 ovaries. 
The leaves on their lower side bear much the peculiar appearance of those of M. 
brachystachyus. 
11. Mrrozus rucosus, nob.: Echites rugosa, Benth. Journ. Bot. iii. p. 248; A. DC. l. c. p. 460: Ambly- 
anthera versicolor, var. intermedia, Müll. l. c. p. 146. In Guiana (Schomb. 350) : non vidi. 
A scandent species, its older branches glabrous, the younger scabridly puberulous; 
leaves oblong, roundly emarginate or subcuneate at the base, shortly acuminate, sub- 
coriaceous, rugous and scabridly pubescent above, or subsequently smooth, cano-tomen- 
tose beneath, or afterwards nearly smooth, 2 in. long, petiolate; peduncle of raceme 
stout, spicately many-flowered; bracts lanceolately subulate, not exceeding the calyx; 
pedicels very short; sepals short, very acute, each with a broadly ovate inner scale; 
corolla yellow, with a cylindrical tube 1 in. long, spreading above; segments broad ; 
stamens seated on a pilose ring in the contraction of the tube; disk urceolate, of 5 ob- 
long fleshy obtuse lobes, partly subconnate. 
Müller regarded this plant as a variety of E. versicolor. 
12. Mrrozus BRACHYSTACHYUS, nob.: Echites brachystachya, Benth. Journ. Bot. iii. p. 248: Amblyanthera 
versicolor, var. f, intermedia, Mill. l. c. p. 146. In Guiana Brit.: v. s. in herb. meo (Schomb. 350, 
in errore) et in herb. Mus. Brit. (Schomb. 565). - 
A climbing species, with very slender flexuous pubescent branches, with ciliate axils 
3-4 in. apart; leaves elliptic-oblong, auriculately cordate at the base, acute and mucro- 
nate at the summit, membranaceous, dark green above, opake, finely puberulous, nerves 
immersed, palish green beneath, opake, cano-tomentellous, with fine reddish prominulent 
nerves, transverse veins very reticulated, 2-3 in. long, ¿-14 in. broad, on pubescent 
petioles 2-3 lines long; raceme lateral, 2 in. long, on a stout scabrid peduncle 1 in. long, 
bearing above many spicate flowers on alternate pedicels, pubescent, 9 lines long, with 
acute bracts ; sepals triangularly acute, recurved at the apex, gibbous at the base, 2 lines 
long, each with 2 inner acute scales; tube of corolla 20 lines long, narrowly contracted 
at the base for 4 lines, broadly funnel-shaped above, membranaceous, often plicated into 
a narrower space; segments inequilateral, broadly dolabriform, 9 lines long and broad; 
stamens seated in the contraction of the tube, on a dense white pilose ring; disk urceo- 
late, fleshy, with a 5-cleft margin surrounding the ovaries. 
A species very near M. versicolor in the peculiar appearance of its leaves. 
13. Mrrozvs SYMPRITOCARPUS, nob.: Echites symphitocarpa, Mey. Ess, p. 132; A. DC. l c. p. 467; 
Griseb. Flor. Brit. W. Ind. p. 414 (sub Synechites). In Guiana, Essequibo : non vidi. 
A climbing species near M. brachystachyus, with simple cirrus-like shining branches, 
subscabridly rufescent, with white lenticels ; leaves opposite, patent, elliptic-ovate, 
obtuse, sagittately cordate, with an acute sinus at the base (younger ones there almost 
entire), acute or acuminate, subscabrid above, tomentous beneath, reticulately veined, on 
