—n 
ON SOUTH-AMERICAN APOCYNACEA. 239 
sulcata ; coma sericeo-pilosa, duplo longior, decidua ; albumen tenue, carnosum ; embryo inclusus ; 
cotyledones 2, foliaceze, oblong, obtuse ; radicula supera, cylindracea. 
Suffrutices Americe intertropice; ramulis tenuibus scandentibus, cum axillis remotis; folia oppo- 
sita, oblonga, acuminata, imo sepe cordata, glabra aut hirsuta, sepe glandulis 2-4 carnosis ad coste 
basin munita, petiolata ; racemi laterales, rarius terminales, aspergilliformes, multiflori ; flores 
mediocres, crebre alternatim spicali, pedicellati ; bractex lanceolate, sepe majuscule, colorate, reti- 
culate. 
1. ExorHosrEMON BRACTEATUM, G. Don, Dict. iv. p. 82: Echites bracteata, H. B. K. iii. p. 217 (non 
Vell); A. DC. Z. c. p. 458. In Nova Granada, Mariquita : non vidi. 
A climbing species, with subfiliform villous branches, having remote axils; leaves 
elliptic, cordate at the base, rounded and mucronately cuspidate at the apex, flat, entire, 
membranaceous, reticulately veined, above green, pubescently hirtellous, with about 4 
glabrous subulate glands at the base of the midrib, beneath softly and canescently 
tomentose, 14-2 in. long, 13-14 lines broad, on channelled villous petioles 4-5 lines long ; 
raceme lateral, aspergilliform, under 3 in. long, on a villous peduncle bearing few rather 
large flowers on alternate hairy pedicels 13 line long, each with a coloured, reticulate, 
hirtellous, acuminate bract narrowed at the base, near an inch long; sepals acuminately 
lanceolate, subequal, flat, erect, 4 or 5 times shorter than the tube of the corolla, each 
with an inner deltoid scale; corolla orange-coloured, hairy outside, its cylindrical tube 
pubescent inside, shortly cup-shaped in the mouth, and there furnished with a pilose 
staminigerous ring; segments oblong, inequilateral or dolabriform, with an acute tooth at 
one angle, rounded at the other; stamens seated on a pilose ring in the mouth of the 
tube; anthers cohering, quite exserted. 
The only flower examined by Kunth was in bud. 
3. Exormostemon Javirense, G. Don, l. c. p. 82: Echites Javitensis, H. B. K. l.c. p. 220; A. DC. Le 
p. 461. In Venezuela, Missiones del Orinoco (Bonpland) : non vidi. 
A lactescent shrub, with terete glabrous branches; leaves elliptic-oblong, rounded at 
the base, shortly acuminate, membranaceous, with entire subrevolute margins, green 
above, smooth, reticulately veined, paler beneath, minutely scabridulous, 445 in. long, 
li-2 in. broad, on glabrous channelled petioles 5-6 lines long; raceme spicatiform, 
lateral, erect, glabrous, 6 lines long ; peduncle covered from near the base with nume- 
rous approximate, nearly sessile, spreading flowers, the size of those of Vinca rosea, each 
supported by an acutely oblong, glabrous, coloured, deciduous bract 1 in. long; sepals 
short, roundly ovate, obtuse, glabrous, subimbricate, coloured, ciliate, each with an 
inner basal scale; corolla glabrous, its tube cylindrical, green, 1 in. long, lined below the 
mouth with a sericeo-pilose ring; limb funnel-shaped, cleft into 5 inequilateral reflexed 
segments cuspidate at one angle, rounded at the other, sericeo-pilose about the mouth ; 
Stamens inserted in the top of the tube; anthers quite exserted, acuminate, shortly 
2-lobed at the base, cohering in an erect cone; disk of 5 fleshy lobes, subconnate at the 
base, nearly as long as the ovaries ; follicles, in the immature state, slender, cylindrical. 
This and the preceding species differ from all the following in their very long bracts, 
thus showing an approach of the genus towards Laseguea. 
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