28 ON SOUTH-AMERICAN APOCYNACEZ. 
CoNDYLOCARPON. 
The following new species may be added to nine others enumerated by Dr. Müller, 
which will afford a few more particulars regarding the peculiar structure of the genus :— 
CONDYLOCARPON GRACILE, nob.: scandens, ramulis tenuibus teretibus, fuscis, striolatis, lenticellato- 
verruculosis, ad axillas vaginula crassissima prominente nodosis: foliis oppositis, ovatis, imo 
obtusis, apice in acumen subbreve recurvatum subito constrictis, marginibus revolutis, sub- 
coriaceis, supra profunde viridibus, opacis, nervis recte divergentibus et arcuatim nexis semi- 
immersis, subtus pallidis, opaeis, punctulis albis leprosis minute granulatis, costa nervisque promi- 
nulis ; petiolis tenuibus, profunde canaliculatis, limbo 5-7plo brevioribus, ad nodum prominentem 
insitis, seepius recurvatis: paniculis axillaribus, folio 2-3plo longioribus, late, laxe, iterumque 
divisis; pedunculo tenui, folio «quilongo, vel breviore, apice verticillatim ramoso; ramis 2-5, 
longissimis, gracillimis, divaricatis, iterumque pluridivisis; ramulis subcapillaribus, ultimis alter- 
natim 5-6-floris; bracteolis minutis, membranaceis, ciliatis; pedicellis tenuissimis, calyce 5-6plo 
longioribus; floribus parvis: fructu pendulo, lomentis geminis, longissimis, 6-8-lobis, lobis isthmis 
anguste interceptis, acute ellipticis, valde compressis mono-dispermis. In Brasilia, prov. Rio de 
Janeiro : v. v. et sicc. in herb. meo in flore (n. 8086) et fructu (n. 4019), ad Magé, Freixal, et Iguassú. 
A species easily distinguished by its nodose axils, its very laxly spreading inflores- 
cence, with almost capillary ramifications. The branchlets are 3 line thick, with axils 
3-5 in. apart, swollen by a thickened interpetiolar cup, upon the margin of which the 
petioles are seated: the leaves are 13-34 in. long, 1-11 in. broad, on a petiole 4-6 lines 
long: the panicles are opposite, 5-6 in. long, 6-8 in. broad; peduncle slender, 1-2 in. 
long, the very slender primary branches 13 in. long, the secondary and tertiary branch- 
lets gradually shorter; pedicels 1 line long; sepals 4 line long, membranaceous, ciliate; 
tube of corolla 1 line long, segments of border twice as long as the tube, spathulately 
orbicular, mucronated, expanded horizontally on the sinister margin, which is mem- 
branaceous, translucent, closely spotted with red dots; stamens seated at the base of the 
short tube; disk, none visible; ovaries ovate, collateral; style extremely short and thick, 
with a globose clavuncle; 2 stigmata, small, acute, pilose. Loments 6-8 in. long, strangu- 
lated into 6 or 8 flattened, elliptic, indehiscent lobes $ in. broad, costately nerved on 
the dorsal face, 1-suleated on the ventral side along the line of the intruding placenta ;- 
pericarp hard, thickly pithy on the edges: seed fusiform, 6 lines long, 13 line broad, 
deeply suleated for the reception of the placenta; testa black, corrugulated, with a white 
linear hilum 2 lines long, in the middle of the furrow. 
A drawing of this species, showing its floral and carpological analyses, is given in 
Plate IV. B 
MANOTHRIX. 
This genus is proposed for two Brazilian plants which 1 collected in the Organ Mountains 
in 1827; it approaches Craspidospermum in its fruit and ecomose seeds. A single flower 
was found upon one of them; and the other was simply fructiferous. The genus is remark- 
able for the peculiar structure of the hairs, of a reddish colour, which cover the seeds, 
and which, seen under the microscope, exhibit a capillary thread in the axis, from which, 
