226 ON SOUTH-AMERICAN APOCYNACEAZ. 
Secoxpatia, A. DC. Sepala 5, parva, acuto-ovata, subæqualia, imbricata, intus squamulis totidem 
minutis alternis aut oppositis irregulariter sitis munita. Corolla subparva ; tubus subbrevis, imo 
constrictus, superne paulissime ampliatus, intus pilosulus ; segmenta trapezoideo-dolabriformia, apice 
sinuato-truncata, tubum «xquantia aut superantia, expansa, in sstivatione dextrorsum convoluta. 
Stamina imo tubi inserta et eidem subequilonga ; filamenta subbrevia, glabra ; anthere lineares, in 
conum cohzrentes, apice acuminate, imo in aristis 2 tenues paullo divergentes fissee, dorso hirsute. 
Discus urceolatus, fere ad basin in lobos 5 obtusos fissus; ovaria 2, subglobosa, disco paullulo 
breviora. Folliculi 2, fusiformi-oblongi, aut ovatiores, validi, sublignosi, divaricatim erecti, sutura 
ventrali dehiscentes, et ibi placentiferi; placenta coriacea, striata; semina numerosa, lineari- 
oblonga; coma magna, e pilis longis elasticis subrevolutim curvatis; embryo in albumine, cotyle- 
donibus semiteretibus, quam radicula supera triplo longioribus. 
Suffrutices intertropici, plerumque Brasiliani, subscandentes, glabri; folia opposita, oblonga, ple- 
rumque parvula, petiolata ; inflorescentia terminalis, breviter racemosa, pluri- vel pauciflora ; flores 
inconspicui. 
1. SECONDATIA DENSIFLORA, A. DC. Prodr. viii. p. 445; Müll. Fl. Bras. xxvi. p. 108, tab. 32 (anal. floris 
et fructus). In Brasilia, prov. Cuyaba et Goyaz: v. s. in herb. Mus. Brit. Cuyaba (Manso, ez herb. 
Martius) ; in herb. meo prov. Goyaz (Gardner 3325). 
Prof. De Candolle unites with this a specimen from Guiana, a species alluded to by 
Bentham (Lond. Journ. Bot. iii. p. 250, sub Schomb. 599). Müller joins with it other 
plants from Minas and Guiana; but from the differences in the diagnoses of De Can- 
dolle and of Müller, and from the discordance in the floral analysis of the latter from 
that I observed in Manso's specimen, we may conclude that two, if not three, species 
have been confounded together by Müller. The following description of the species is 
given from a careful examination of the specimens of Manso and Gardner. Müller's 
floral analysis therefore relates not to this speeies, but to another, either from Minas or 
Guiana. 
It is apparently a scandent plant, having somewhat slender, curving, subfistulose, sub- 
lenticellate, striate, glabrous branches, with axils 12 in. apart, and a small acute stipule 
on each side of the opposite petioles ; leaves ovate-oblong, roundish or subacute at the 
base, suddenly constricted at the summit into a narrowish subacute acumen, the margins 
sinuously undulating, thinly chartaceous, glabrous, green above, midrib prominulent, 
with 12 pairs of fine distinet divergent nerves, free and somewhat arching but not 
conjoined within the margin, a little darker beneath, opake, with prominulent nerves and 
scarcely visible transverse veins, 3-4 in. long, 11-2 in. broad, on subpatent channelled 
petioles 4-5 lines long; panicle terminal, in the sinus between the ultimate pair of leaves, 
nearly 1 in. long, biramose at the base, the branches divided and bearing from 20 to 40 
small flowers on approximate alternate pedicels 2-3 lines long, supported each by a 
bracteole the size of the sepals; sepals ovate, obtuse, with ciliate membranaceous mar- 
gins, 2 line long; corolla hypocrateriform ; tube cylindrical, inside glabrous in the middle 
towards the base, but thickly pilose in the mouth, 4 lines long ; segments ovate, slightly 
dolabriform, dextrorsely convolute, 2 lines long, 14 line broad; stamens seated near the ` 
base of the tube; filaments short, puberulous; anthers linear, 24 lines long, very acu- 
minate, with 2 parallel basal prongs; disk urceolate, cleft halfway into 5 obtuse lobes 
nearly as long as the ovaries; follicles 2, subdivergent, often solitary by abortion, with 
