ON SOUTH-AMERICAN APOCYNACEÆ. 221 
neath, with immersed nerves, 2-4 in. long, 3-4 lines broad, on stoutish pilosulous petioles 
1-2 lines long; raceme lateral, 1-13 in. long, pubescent, bearing 4-5 alternate flowers 
on pedicels 6 lines long, supported by linear setiform bracteoles; sepals lanceolately 
subulate, 13 line long, with an inner 3-dentate scale; corolla handsome, dark-red; tube 
2 in. long, narrowed at the base for half its length, thence enlarged into a broad funnel- 
shape, glabrous, its mouth yellow; segments violaceous, rhomboidally oval, inequi- 
laterally oblique, subdolabriform, crispate, 4 lines long and broad; stamens seated on 
a niveously pilose ring in the contraction of the tube; anthers membranaceous at the 
apex, obtusely bifureate at the base; disk urceolate, 5-sulcate, margin 5-notched, sur- 
rounding the 2 ovaries. 
A species closely allied to the two preceding. 
9. Mivozus TENUICAULIS, nob. : Echites tenuicaulis, Stadelm. l. c. p. 40; A. DC. L c. p. 462: Amblyanthera 
versicolor, var. olivacea, Müll. l.c. p. 147. In Brasilia, prov. Bahia et Amazonas: v. s. in herb. meo 
et Mus. Brit. 8. Gabriel, Rio Negro (Spruce 2206). 
A distinct species, with twining, very slender, striate, subpuberulous brauches, with 
prominent transverse axils 4 in. apart; leaves lanceolately oblong, very much narrower 
towards the base, which is shortly and narrowly cordate, with a long, very acuminate, 
subciliate summit, rigidly chartaceous or subcoriaceous, with revolute margins, glabrous : 
and polished above, of a deep olive-green colour, corrugulate and. suleate along the 
hispidulous, very slender, immersed midrib, nerves, and veins, fulvously opake and 
pruinosely velutinous beneath, with prominent slender midrib, nerves, and reticulated 
veins, 22-31 in. long, 4-1 in. broad, on villous petioles 4 lines long; raceme lateral, 
14 in. long, on a peduncle as thick as the branch, 6 lines long, bearing above about 
12 alternate flowers of a pale-rose or yellowish colour, pubescent outside, about the size 
of those of M. versicolor. 
10. Mrrozus VERSICOLOR, nob.: Echites versicolor, Stadelm. Bot. Zeit. 1841, p. 38; A. DC. l.c. p. 461: 
Amblyanthera versicolor, Müll. (in parte), l. c. p. 146. In Brasilia, prov. Bahia et Ceará: v. 3. in 
herb. meo, prov. Ceará, ad Crato (Gardner 1755). 
This species certainly does not belong to Amblyanthera, but is congenerie with all the 
preceding. It isa climbing plant, with extremely slender, twining, reddish, hirsutulous 
branches; its axils, 3-4 in. apart, are furnished with 2 small acute stipules on each face ; 
expanded opposite leaves, oblong-ovate, cordate at the base, suddenly or more graduaily 
acute and cuspidate at the apex, submembranaceous, pale or darker green above, opake, 
scabridulous and hirsutulous on the midrib and nerves, beneath incano-pallid or ochra- 
ceously opake, shortly or obsoletely velutinous, with a reddish prominent midrib, pro- 
minulent fine nerves and reticulated veins, 2-32 in. long, 1-1} in. broad, on pubescent 
petioles 3-4 lines long; raceme lateral, nearly as long as the leaves, on a peduncle 
as slender as the branch, 6 lines long, charged above with about 14 alternate flowers on 
pedicels from 13 to 6 lines long, supported by slender lanceolate bracts 13 line long ; 
sepals acute, 14 line long, with an inner rhombic, 3-denticulate scale; corolla white, 
of a yellowish, roseate or. purplish hue, all cano-pubescent outside; tube 16 lines long, 
narrowed at the base for the length of 9 lines, campanular above; segments rhomboidally 
