102 ON SOUTH-AMERICAN APOCYNACEX. 
let bearing 3-5 approximated flowers on bracteolated pedicels 1 line long; sepals acutely 
ovate, puberulous, 1 line long; corolla subglabrous, 2 lines long; segments ovate, a little 
shorter than the tube, submembranaceous, smooth, with dextrorse convolution; stamens 
more than half-included, anthers with 2 long basal prongs. 
23. THYRSANTHUS GLABRESCENS, nob. : Forsteronia glabrescens, Müll. l. c. p. 102. In Brasilia australiore, 
v. v. et sicc. in herb. meo (n. 3942) Rio de Janeiro, Botafogo; v. s. in herb. Mus. Brit. prov. S. Paulo 
(Bowie and Cunningham). 
Its branches are interruptedly striate, sublenticellate, oppositely branched, branch- 
lets slender, striolate, with axils 1-13 in. apart; leaves often scarcely opposite, elliptic 
oblong, obtuse at the base, ending in a sudden sharp acumen, submembranaceous, 
fuscous rufescent green above, often marked by many small white leprous dots, with 
about 7 pairs of semi-immersed oblique nerves, and with 2 small yellowish glands at the 
base of the midrib, opake and subferruginous beneath, with prominulent reddish midrib, 
nerves, and reticulated veins, 23-32 in. long, 14-12 in. broad, on petioles 3 lines long; 
panicle terminal, pyramidally thyrsoid, laxly branched, 34 in. long; peduncle slender, 
bare at the base for 4-6 lines, branches somewhat spreading, 3-1 in. long, diminishing 
upwards, again laxly divided, bearing many lax flowers on bracteolated pedicels 1-14 line 
long, all subglabrous or shortly puberulous; sepals ovate, subobtuse, 1 line long, each 
with 3 minute inner basal scales; corolla glabrous outside, 14 line long; segments 
lanceolate, as long as the tube, woolly within; anthers semi-exserted, bifurcate at the 
base; disk of 5 free lobes, nearly as long as the 2 glabrous ovaries. 
24. THYRSANTHUS BRACTEATUS, nob.: Echites bracteata, Vell. Fl. Flum. p. 112, Icon. iii. tab. 41 (non 
Kunth): Echites Velloziana, A. DC. l. c. p. 474: Forsteronia bracteata, Müll. l. c. pp. 106-453. 
In prov. Rio de Janeiro : v. v. et sicc. in herb. meo (n. 4025) montibus Organensibus (in flore et fructu). 
A scandent species, with rigid subflexuous rufescent branches, oppositely divided, 
branchlets more slender, verrucously lenticellate, with axils 1-13 in. apart, all 
covered with dense, short, ferruginous pubescence; leaves spreading, oblong ovate, 
shortly cordate at the base, with a very short obtuse or acute acumen, rigidly charta- 
ceous, with revolute margins, dark green above, opake, suleate on the pilosulous midrib 
and oblique nerves, with 2 or more small glands among the rigid hairs at the base of the 
midrib, ferruginously opake beneath, hispidly pilose upon the prominent midrib and 
nerves, the hairs rufous and spreading, 13-23 in. long, 4-14 in. broad, on stout villous 
petioles 11-2 lines long; raceme terminal, 1 in. long, densely hirsute, on a stoutish 
peduncle 9 lines long, bearing an oblong capitate head of small flowers, all rufously hir- 
sutulous, on horizontal stout pedicels 4 line long, at first approximately spicate, after- 
wards more remote, the lower ones supported by lanceolate bracts 2 lines long, the upper 
ones by acutely deltoid bracteoles 3 line long; sepals acute, subpilose, 1 line long; 
corolla subpilose outside, glabrous within, 2 lines long; tube 13 line long; segments 
membranaceous, 3 line long; stamens small, apices subexserted; disk of 5 oblong free 
lobes, a little shorter than the 2 subpilose ovaries; follicles 2, horizontally divaricate, 
black, sparsely pilose, terete, straight, 2 in. long, 1 line thick, subacute at the apex, each 
