374 FLORA OF SOUTH AMERICA. 
v. petiolo crasso vix lineam longo insidentia, apice sepius 
emarginata. Pedunculi communes hirtelli, vix compressi, 
folio dimidio breviores, apice trichotome ramosi, floribus 
numerosis parvis. Petala obtusa, linea breviora, dorso 
pubescentia. Stamina 20. Anthere pilis aliquot nigris 
onuste. Ovarium 5-angulare, 5-loculare, loculis biovulatis. 
Stylus brevis. Stigma obsolete 5-lobum.—British Guiana, 
Schomburgk (n. 166, Coll. 1841). : 
Amongst Martius’s Cayenne plants is a new species, 
in some respects allied to the preceding one, and which 
may be thus characterized: H. subcrenatum, ramulis hir- 
tellis, foliis subsessilibus ovatis obtuse acuminatis subcre- 
natis basi cuneatis, cymis folio brevioribus paucifloris, petalis 
dorso puberulis.—Folia 1-14-pollicaria, crenaturis ineequali- 
bus sepe obsoletis. Cymæ fere H. floribundi varietatis 
minoris. 
774. H. Guianense (sp. n.), glaberrimum, foliis petiolatis 
ovatis obtusis basi truncatis rotundatis angustatisve, petiolo 
alato, cymis folio longioribus, petalis glabris.—Frutex 10-12- 
pedalis, pluribus notis H. crassifolio Mart. affinis. Folia 
minora (pleraque subtripollicaria) proportione latiora, lamina 
basi interdum obtuse subauriculata. Petiolus late alatus, 
semipollicaris. Pedunculi sepe ancipites, dichotomi, flori- 
bundi. Flores viridi-lavescentes, magnitudine eorum H. 
Jioribundi. Stamina 20. Anthere pilose. Ovarium 5-locu- 
lare, loculis biovulatis. Stylus elongatus, stigmate 5-radiato. 
—Savannahs, British Guiana, Schomburgk n. 270. 
775. H. floribundum Mart. Nov. Gen. v. 2, p. 145, t. 199.— 
On the Upper Rupunoony and in the Parime Mountains, 
Schomburgk; two single specimens, both belonging to the 
larger variety mentioned and figured by Martius. 
116. H. > densiflorum (sp. n.), foliis ovato-ellipticis breviter 
et obtuse acuminatis basi rotundatis breviter petiolatis, 
cymis pedunculatis axillaribus lateralibusque dense multifloris, 
ovario 5-loculare, loculis uniovulatis.—Arbor 60-pedalis. 
Petiolus semipollicaris, supra planus at non alatus, Folia 
coriacea, 3-6-pollicaria, Pedunculi pollicares, minute pube- 
