572 
AMERICAN JOURNAL OF BOTANY 
[Vol. 9, 
tube, ovate, obtuse, spreading or reflexed; stamens shorter than the lobes; 
filaments stoutish and subulate, about equal to or longer than the ovate 
anthers; scales not reaching the stamens, bridged below or at about the 
middle, sparingly fringed with medium-length processes, well attached; 
styles not subulate, or at the most only slightly so, much longer than the 
depressed-globose ovary. Capsule late and somewhat irregularly circum- 
scissile, with the withered corolla about it, intrastylar aperture widely 
gaping; mature seeds not seen. 
Engelmann did not consider the capsule of this species as opening, but 
in the specimens examined I find that it is late and irregularly, but definitely, 
circumscissile. 
Cuscuta tricliostyla typica 
(PI. Ill, fig. 15, A~E) 
Corolla cylindric-campanulate, calyx not as long as the corolla tube, 
scales oblong, bridged below the middle. 
Type locality: Panama. Distribution: Panama and Province of Para, 
Brazil. 
Specimefis examined: Brazil: Prov. Para, Santarem (Spruce 8^4). 
Panama (Tweedie, the type, a fragment in the Engehiiann herbarium). 
Cuscuta trichostyla carinata n. var. 
(PI. Ill, fig. 15, F, G) 
Corolla campanulate, calyx about as long as the corolla tube, carinate 
toward the tips; scales ovate, bridged at about the middle. 
Type locality: Paraguay. Distribution: Known only from the type 
locality. 
Specimen examined: Paraguay (Fiebrig 48/"). 
19. Cuscuta orbiculata n. sp. 
(PI. IV, fig. 19, A-E) 
Stems thick. Flowers 4-5 mm. long, subsessile in racemose-spicate 
clusters; calyx deep, nearly as long as the corolla tube; lobes orbicular, 
thick and fleshy, overlapping, edges finely irregular; corolla cylindrical, 
^oon becoming urceolate because of the developing capsule; lobes short, 
ovate-orbicular, obtuse, overlapping, spreading to reflexed ; stamens shorter 
than the lobes; filaments stout, equal to or shorter than the ovate anthers; 
scales about reaching the stamens, prominent, heavily fringed, bridged 
below the middle; styles slender, equal to or longer than the globose ovary; 
stigmas rather large. Capsule globose, circumscissile, the withered corolla 
enveloping it; only one seed found in each of the few capsules opened, 
orbicular, about 1.5 mm. long, hilum perpendicular. 
This species resembles C. globiflora but differs in the type of inflorescence 
and in the shape of the calyx lobes. It differs from C. americana in the 
shapes of the calyx, scales, and capsule. 
Type locality: Goyaz, Brazil. Distribution: Goyaz, Brazil, and the 
island of Fernando de Noronha. 
