378 
AMERICAN JOURNAL OF BOTANY 
[Vol. 9, 
or subcordate at the base, 10-16 cm. long, 3.5-4.5 cm. broad, glabrous, 
glossy, yellowish green with midrib and principal veins outlined in yellow; 
when dry, dull, scabrous, punctate above, veins more or less prominent 
and embossed; petiole 3-5 mm. long, canaliculate above, subtending a 
long, shallow groove in the stem; two basal glands large, conspicuous; 
glandular marginal depressions numerous, making the leaves distinctly 
subcrenulate. Umbelliform racemes yellowish or brownish green, pendu- 
lous. Pedicels stout, horizontal or curved downwards at the time of 
flowering, 4.5-5.5 cm. long, covered with large, conspicuous, corky ex- 
crescences. Calyptriform corolla thick, coriaceous, ovoid or ovoid-conical, 
1. 3-1. 8 cm. long, i. 0-1.2 cm. diameter. Stamens numerous, free; fila- 
ments cream-colored, 8-1 1 mm. long, tapering, stout and more or less 
tjuadrangular at the base; anthers reddish or pink at maturity, lanceolate, 
5-7 mm. long. Ovary slightly obovoid, =b 7 mm. diameter, 9- to ii-locular, 
abruptly conical above, terminating in a short, blunt style, =t 3 mm. long. 
Fruit large, globose, ±2.0 cm. diameter, crowned by the slightly elevated 
hemispherical stigmatic surface; at maturity reddish, scabrous or banded- 
verrucose. Seeds glistening, blood-red. Nectaries elongated, 5.5-8.0 cm., 
considerably swollen at the apex, tapering towards the base; orifice sur- 
rounded by a protruding rim or lip; petiole d= 15 mm. long; fused pedicel 
showing as a slightly embossed, verrucose rib; flower bud rudimentary, 
depressed. 
Banks of the Cuyuni River near Kartabo, British Guiana. Bailey 
nos. 128, 177, 178, and 193, deposited in the Gray Herbarium of Harvard 
University. 
Marcgravia (Brachyracheae) purpurea spec. nov. 
Folia ramorum floralium pro genere longe petiolata, elliptica vel oblongo- 
elliptica, coriacea, basi acuta, apice acuminata vel attenuato-acuminata; 
in sicco membranacea, supra punctata, venis secundariis patentibus; nervo 
crasso supra sulcata, petiolis crassis antice canaliculatis; glandulis hypo- 
phyllis inconspicuis, duobus, ad basim costae mediae; glandulis margin- 
alibus depressis paucis. Racemus umbelliformis, multiflorus, purpureus, 
longius pedunculatus. Bracteae 4.7, elongatae, tubuloso-cucullatae, pedi- 
cellis longiores, clavatae, deciduae. Pedicelli 24-42, graciles, pauce tubercu- 
lato-verruculosi, prophyllis a calyce discretis. Corolla conico-ovoidea, 
purpurea. Stamina ±16, libera; antheris rubellis. Ovarium turbinato- 
globosum in stigma productum, 7- - 8-loculare. Fructus parvus, globosus, 
stigmate apiculo coronatus. 
Scandent epiphytic shrub. Plagiotropic shoots quadrangular, bearing 
small subcoriaceous or membranous leaves and short clasping roots. The 
former oblong or oblong-oval, distichous, glandular at the base. The 
latter aggregated in clusters, sheltered by the leaves. Orthotropic, fertile 
shoots long, bilaterally compressed, flexuous, terminating in a straight, terete 
peduncle, '15-30 cm. long. Leaves distichous, coriaceous; elliptical or 
oblong-elliptical, acuminate or attenuate-acuminate, acute at the base, 
glossy, dark green, 12-19 cm. long, 5-8 cm. broad; when dry, membrana- 
ceous with conspicuously embossed veins and veinlets, punctate above; 
petiole 1. 0-1.5 cm. long, deeply canaliculate above; basal glands incon- 
spicuous; marginal glandular depressions widely spaced. Leaves^ of 
peduncle 1-6, more or less rudimentary and early deciduous, conspicu- 
