ON SOUTH-AMERICAN APOCYNACER. 245 
5. ForsTERONIA MONTANA, Müll. /. c. p. 101. In Brasilia, prope Rio de Janeiro, in montib. ad Estrella : 
v. s. in herb. Mus. Brit. in fructu, prov. Rio Janeiro (Bowie & Cunningham 72) : flores non vidi. 
This species, described by Müller, is scandent, with slender, glabrous, fuscous branches, 
densely verruculose; leaves broadly ovate, roundish and subcordate at the base, sud- 
denly and shortly acuminate at the apex, membranaceous, glabrous, fuscous-green 
above, with about 5 pairs of ascending semiimmersed nerves and reticulated veins, pale 
ferruginous and opake beneath, with subprominulent nerves, and sulcate over the 
immersed reticulated veins, 4-54 in. long, 21-22 in. broad, on rather slender chan- 
nelled petioles not 6 lines long; inflorescence terminal (or lateral at the ends of the 
younger branches), pyramidal, with few ramifications, each branchlet rather laxly 
flowered, the flowers nearly 2 lines long, on short bracteolate pubescent pedicels ; 
sepals acutely ovate, half the length of the corolla, pubescent, ciliolate on the margins, 
without inner scales; corolla ferruginously tomentellous; tube very short; segments 
oblong-ovate, erecto-patent, hispidulous within, twice the length of the tube; stamens 
exserted ; anthers rigidly hairy behind; disk 5-lobed; follicles 2, 14 in. long, torose, 
glabrous, fuscous, having about 8 very narrow long strangulations between as many sub- 
acutely ovate seminiferous swellings, which are subnitid and costately striate outside. 
6. Forsteronta Srrrowrr, Müll. l. c. p. 101. In Brasilia meridionali (Sellow 396), prov. Rio Janeiro 
(Riedel 1101) : v. s. in herb. Mus. Brit. Brazil (Sellow). 
A scandent plant, whose branches are cinereous, trichotomous; branchlets slender, 
fuscous, glabrous ; leaves oblong-ovate or ovate-lanceolate, subacute at the base, shortly 
acuminate, submembranaceous, subglabrous, or obsoletely puberulous, opakely pallid- 
green above, glaucous, with 5-6 pairs of fine prominulent nerves, with others inter- 
mediate, all arcuately conjoined, pale-green beneath, with reddish prominulent nerves 
and reticulate veins, 22-31 in. long, 10-12 lines broad, on slender glabrous petioles 
3-4 lines long; panicle subterminal, 3 in. long, branching from near the base, the lower 
branches short, increasing upwards, where the branchlets are again divided and thickly 
flowered; flowers approximate, on slender pubescent pedicels 1 line long; sepals acutely 
ovate, puberulous, ¿ line long; corolla fulvo-puberulous outside, 2 lines long ; tube very 
short, it and the acutely ovate segments hispid inside. 
7. Forsteronia Rieper, Müll. /. c. p. 103. In Brasilia, prov. Rio de Janeiro, ad Estrella (Riedel) : 
v. 8. in herb. Mus. Brit. Iguassu, prope Estrella (Bowie & Cunningham). 
A slender climbing plant, with glabrous, striate, brown branchlets, their axils 1 in. 
apart; leaves oblong-lanceolate (upper, young ones narrowly lanceolate), acute at the 
base, with a short broadish subobtuse acumen, membranaceous, scabridulous, fuscous- 
green above, with 4-6 pairs of remote ascending nerves, subferruginous beneath, 
opake, with prominulent reddish nerves and densely reticulate veins, 2-23 in. long, 
6-10 lines broad, on slender petioles 2-3 lines long; panicle racemose, b 9m Á— 
young branches, 21 in. long, oppositely branched at distances of 6 lines; branches 
3-1 in. long, bare at the base, patent, again shortly divided and bearing several approxi- 
mate flowers on pedicels 1 line long; sepals acutely ovate, subpilose, 2 line long; corolla 
subpilose, 2 lines long ; tube very short. 
