ON SOUTH-AMERICAN APOCYNACEZ, 49 
broad, on channelled petioles 3-5 lines long; raceme lateral at the axils, or seated in the 
dichotomy of the branchlets, on a peduncle 7 lines long, bearing several alternate yellow 
flowers on pedicels 8 lines long, with small braets. The sepals are roundish oblong, very 
imbricated, 2 lines long, each with 3-4 minute scales at the base; the corolla has a 
cylindrical tube 6 lines long, fleshy and contracted at the mouth, shortly ventricose 
below it, cylindrical along the middle, and enlarging a little towards the base; the seg- 
ments are fleshy at their base for a length of 3 lines, are erect in the bud; but then the 
remaining membranaceous portions, linear, obtuse, are suddenly introflexed, descending 
into the tube, and there enveloping the upper half of the stamens; they subsequently 
expand in a rotate form, when they curve sinistrorsely, and are 4 lines long; the stamens, 
cohering, are fixed in the contraction of the tube and nearly reach the summit; the 
anthers, disk, style, and clavuncle as in the generic character. The 2 follicles, somewhat 
spreading, are roundish oblong, inclined and wedge-shaped on the shorter edge, with a 
raised eurved ridge on each side, broadly convex on the ventral side, where they open by 
a broad, gaping, sutural fissure, are 16 lines long, 9 lines broad; the pericarp is thick, 
coriaceous, smooth, each follicle enclosing many seeds; the seeds are oblong, acute at 
one extremity, rounded at the other, and are costately striated, with a hollow channel on 
one face, where they are attached to a pulpy or fleshy red funicle (arillus of Vahl), which 
half envelops each seed. 
Prof. Müller, as above cited, gives good analytical drawings of the flower, and a figure 
of the follicle and seed. ` 
Var. ovalifolia: the leaves here are of an oval form, acute at the base, cuspidately 
acuminate, the margins obsoletely crispated, very pallid green on both sides, 54 in. long 
including the acumen (3 in. long), 34 in. broad, on channelled petioles 4 lines long; 
the inflorescence bears rather larger flowers. In Guiana (Schomb. 42 dis). 
A drawing of this species, and an analysis of its flower, its follicle, and seeds, are given 
in Plate VI. B. 
2. BONAFOUSIA OBLIQUA, nob,: ramulis tenuibus, pallide brunneis, subsulcatis : foliis oppositis, in paribus 
fere «qualibus, imo acutis, et hinc uno latere conspicue obliquis, apice in acumen longiusculum 
sensim attenuatis, submembranaceis vel chartaceis, planis, marginibus revolutis szpius integris, aut 
raro obsolete undulatis, supra lte viridibus, costa sulcata, nervis plurimis prominulis patentim 
divaricatis, rectis, juxta marginem junctis, subtus flavescentibus, opacis, costa prominente, nervis 
tenuibus prominulis, venis immersis; petiolis brevibus, imo subfossatis: racemo in dichotomiis 
laterali, folio 6plo breviore, plurifloro, subhirsutulo; pedunculo sub-4-gono; pedicellis crebre 
alternis, corrugulatis, calyce 3plo longioribus; sepalis obtuse ovatis, imbricatis, subinsequalibus, 
scabridulis; corollee tubo crassiusculo, cylindrico, superne et infra paullo ampliore, intus sub faucem 
constrictam puberulo, extus scabridulo, segmentis obtuse linearibus, pro tertia parte carnosulis, 
rectis, pro reliquis duabus partibus in estivatione subito introflexis et intra faucem descendentibus, 
demum rotatim explicatis, membranaceis, et purpurascentibus, sinistrorsum convolutis; staminibus 
in constrictione tubi ex annulo piloso ortis, inclusis, antheris coherentibus, apice acuminatis, imo 
biaristatis; disco cylindrico, submembranaceo, ovaris 2 oblongatis breviore; stylo clavuncula et 
stigmatibus ut in char. gen.: folliculis ignotis. In Venezuela australi : v. s. in herb. meo et Mus. 
Brit. Rio Casiquiare (Spruce 3119, sub B. undulata). 
` 
H 
