72 ON SOUTH-AMERICAN APOCYNACER. 
semina plurima, obovata, apice subacuta, valde compressa, dorso crebre aspere striata, ventre concava, 
medio hilifera, et hinc funiculo carnoso suspensa. 
Frutex Brasiliensis; rami crassi, angulati, fistulosi, cum axillis remotis; folia majuscula, rigida, 
oblonga, cum petiolis crassis brevibus fossatis ; panicula lateralis, brevis, crasse pedunculata, breviter 
pluriramosa, ramis 2-3-floris. 
PunissocARPUS RIGIDUS, nob.: Tabernemontana macrophylla, Müll. (non Poir.) Mart. Fl. Bras. fasc. xxvi. 
p. 75: Peschiera muricata, Benth. (non A. DC.). In Amazonas: v. s. in hb. meo et alior. Rio 
Negro (Spruce 1470). 
A well-marked species, with very large leaves, which are unequal at the base, rigidly 
coriaceous, margins recurved, above fuscous green, opake, minutely corrugulated, with 
convex interspaces between the sulcate patently divergent nerves arcuately con- 
joined near the margin, beneath opake ochreous, with very prominent thick reddish 
midrib and nerves, 83-113 in. long, 31-53 in. broad, on thick petioles only 2 lines long, 
deeply channelled, with a hooded elevated margin, deeply fossate at the base, and 
connected across the node by a transverse ridge.  Panicle short, erect, lateral at the 
node, on an obsoletely pubescent stoutish peduncle 9 lines long, very shortly and rather 
closely branched, each branch bearing 2-3 flowers on stoutish pedicels 12 line long, 
supported by a shorter ovate bract ciliolated on the margin; sepals rounded ovate, 
distinct, 1 line long, with an inner basal 5-fid scale; tube of corolla (in bud) 7 lines long, 
cylindrical, suddenly narrowed in the middle; segments of the border rhomboidally dola- 
briform, 3 lines long, sinistrorsely convoluted; stamens inserted in the contraction of 
the tube, on a retrorsely pilose ring; anthers, disk, style, and clavuncle as in the generie 
character. Follicles gibbously oval, 1 in. long, 5 lines broad, with a thickly coriaceous 
pericarp, densely echinated as in Peschiera, dehiscing along the convex ventral suture; 
seeds not numerous, oblong, somewhat pointed at the apex, 5 lines long, 21 lines broad, 
longitudinally striated with several asperulous lines, subeompressed, channelled on the 
ventral face, where they are attached to a pallid fleshy funicle. 
A representation of this species, and an analysis of its flower, fruit, and seed are 
shown in Plate IX. a. 
CoDoNEMMA *. 
This genus is proposed for a few plants from the Rio Negro and Guiana, the type of 
which is the Tubernemontana calycina of Spruce (T. Benthamiana bis of Müller). They 
are distinguished by their large leaves and their inflorescence, the chief peculiarity of 
which consists in a large campanular calyx, cleft halfway down into 5 oblong imbricated 
divisions, the fleshy tubular portion being furnished within with numerous lanceolate 
scales, arranged in several series. 
Coponemma, nob.: Calyx majusculus, tubuloso-campanulatus, superne ad medium in lobos 5 subacutos, 
oblongo-lanceolatos, margine membranaceos, erectos, subinzequales fissus, intus basin versus squamulis 
* From xúdwv (campana), čppa (vestis), on account of its bell-shaped calyx, 
