28 ILLINOIS BIOLOGICAL MONOGRAPHS [118 



spreading, shorter than the tube; scales reaching the filaments, fringed, 

 bridged at about the middle; stamens shorter than the lobes; anthers oval, 

 about equal to the somewhat subulate filaments; ovary small, somewhat 

 conic, tapering into the subulate styles; stigmas large and more or less 

 convoluted. Capsule circumscissile, with a very thick apex giving the 

 capsule a conic appearance, surrounded by the withered corolla; seeds 

 usually four in a capsule, round, compressed, about 1.4 mm. long; hilum 

 at one end, short, elliptical or a dot; umbilical area somewhat finely striated. 



This species resembles C. jalapensis somewhat in the shape of its 

 capsule, but is different in the shape of its calyx and the short, broad 

 lobes; from C. floribunda and C. macrocephala it differs in the short, sub- 

 ulate styles and the thickened apex of the capsule. 



Type locality: State of Oaxaca, Mexico. Range: Western and 

 southern Mexico. 



Specimens examined: Mexico: Oaxaca; Sierra de San Felipe (Pringle 4967, the type 

 in the U. S. Nat. Herb, as sheet 252,219). Jalisco; Volcano of Colima (M. E. 347). 



Cuscuta ceratophora, n. sp. 

 [Figures 29 and 72] 



Stems slender. Flowers glabrous, about 3 mm. long, pentamerous, 

 sessile, in compact clusters; calyx lobes slightly longer than the corolla 

 tube or about equalling it, oblong, obtuse, with uneven edges and a 

 mucronate tip, or the apex more obtuse with a horn-like projection from 

 its dorsal surface near the tip; corolla lobes about as long as the campanu- 

 late tube, upright to spreading, oblong, obtuse, irregularly toothed at 

 the apex and with a subapical horn-like projection; stamens shorter than 

 the corolla lobes; anthers small, cordate, slightly versatile and shorter than 

 the somewhat subulate and rather stout filaments; scales reaching the 

 filaments, broad, ovate, fringed with short processes, bridged at about 

 their middle; styles stout, much longer than the small, globose ovary; 

 stigmas capitate. Capsule globose, circumscissile with a small opening; 

 styles subulate and somewhat divergent; seeds not seen. 



The collections of this species are all rather fragmentary, but it appears 

 to be well characterized. In a number of flowers well developed buds 

 were found between the calyx and corolla. This has not been observed, 

 so far as recorded, in any other species. 



Type locality: "Etats de Michoacan et de Guerrero," Mexico. Range: 

 Southern Mexico and the lesser Antilles. 



Specimens examined: Mexico: "States of Michoacan and Guerrero" (Langlasse 438, 

 the type, in the U. S. Nat. Herb, as sheet 385,946). Vera Cruz (Miiller in 1853). 



West Indies: Curasao; Patrick (Britton & Shafer 3069). 



Cuscuta chapalana n. sp. 

 [Figures 11 and 69] 



Stems medium. Flowers 3-4 mm. long, glabrous, pentamerous, 

 subsessile, the pedicels much shorter than the flowers, in compact cymose 



