354 CONTRIBUTIONS TO 
rectiora, in connectivum magnum carnosum frequenter 
incurvum continua; anthere 2-loculares, dorso adnate, 
lobis oblongis, longitudinaliter dehiscentibus, apice cervice 
gibbo, utrinque poro hiante, jugatæ. | Ovarium superum, 
obovato-oblongum, cum stylo articulatum, 2-loculare, pla- 
centis lunulatis, utrinque seminiferis, septo adnatis, multi- 
ovulatis. Stylus nunc brevis, crassus, turbinato-infundi- 
buliformis, apice cavus, nunc gracilior, longus, subfusiformis, - 
apice incrassatus. Stigma sub—2-labiatum, intus glandulis, 
2 instructum. Bacca magna, pulposa, 2-locularis. Semina 
numerosa, structura ignota. 
Frutices, vel arbusculæ, in America meridionali intertropica 
indigena, suborgyales, ramosissimi, ramis dichotomis, folis 
petiolatis geminis, subintegris plerique | cordatis, altero 
minori; racemis extra-axillaribus sepissime in dichotomia 
ramulorum ; floribus pedicellatis, secundis, pedicellis articu- 
latis, sepe deciduis. 
Derivatio ex mwv pinguis, avnp stamen, propter antherarum con- 
nectivum magnum. j 
I propose to separate the different species into two 
sections, with curved and straight stamens. 
§ I. CERATOSTEMON. Stamina valde curvata, crassa, apice 
conniventes. 
1. Pionandra floribunda (n. sp.) :—foliis 5-nerviis, fere glabris, 
cordato-ovatis, apice valde attenuatis, et ciliato-serratis, 
limbo integro, supra nitidis, creberrime punctulatis, subtus 
glauco-pallidis, sub lente minutissime pubescentibus ; 
racemis secundis, folio æqualibus, corolla lobis extus apice 
rostratis.— Serrá Organensi, Rio-Janeiro. 
This is a small tree with very bushy widely spreading 
branches, conspicuous for the number of its long pendent 
racemes of flowers, that I met with on the ascent of the 
Organ Mountains, at an elevation of nearly 3000 feet. The 
branches are flexuose, somewhat dichotomous, quite smooth 
and glabrous. "The leaves are sharply acuminate at the apex, 
