46 ILLINOIS BIOLOGICAL MONOGRAPHS [136 



oblong, truncated, sparingly fringed about the apex, bridged at about a 

 quarter to a third of their height. 



Type location: "Western Texas." Range: Texas and New Mexico 

 to central Mexico. 



Specimens examined: United States: Texas; Western Texas to El Paso (Wright 

 522, taken as the type, in the Engelmann Herb.), Prairies of the Leona (Wright in 1852), 

 Eagle Pass (Havard 4, Howard in 1888). New Mexico; (Wright 1639, in Herb. Boissier), 

 Rio Gila (Green 275), Sierra Co. (Metcalf 1290)?. 



Mexico: Sinaloa; Culiacan (Rose, Standlej' & Russell 14929). 



Cuscuta leptantha palmeri (Watson) n. comb. 

 [Figures 34 f and 91] 

 C. palmeri Watson, Proc. Amer. Acad. Arts & Sci., 24:64, 1889. 



Lobes of the corolla usually five and reflexed; scales more deltoid and 

 copiously fringed, bridged at about the middle. 



Type locality: "At Los Angeles Bay, Lower California." Range: 

 Lower California. 



Specimens examined: Mexico: Lower California; Los Angeles Bay (Palmer 544, the 

 type, in the Gray Herb.), La Paz (Palmer 16, Brandegee 406). 



Cuscuta polyanthemos Schaffner. n. sp. 

 [Figures 31 and 92] 

 C polyanthemos Wilh. Schafifner in herb. 



Stems very slender. Flowers glabrous, 4-5 mm. long, pentamerous 

 or tetramerous, in umbellate clusters on pedicels usually two or more 

 times the length of the flowers; calyx short, not over half as long as the 

 corolla tube, its lobes triangular, acute; corolla tube 4-5 mm. long, cy- 

 lindrical, slightly tapering towards the base; lobes triangular, lanceolate, 

 acute, spreading to reflexed, about half as long as the tube; scales shorter 

 than the tube, reaching about the middle, sparingly fringed with short proc- 

 esses, bridged at about one-third their height; stamens shorter than the 

 lobes; anthers oblong-oval, shorter than the slightly subulate filaments; 

 ovary globose, slightly pointed with a thickened collar about the intra- 

 stylar aperture; styles many times the length of the ovary, exserted; 

 stigmas capitate. Capsule globose, slightly pointed, with the withered 

 corolla carried at the apex, somewhat glandular, circumscissile, leaving 

 the obcordate dissepiment in the calyx; seeds about 1 mm. long, usually 

 four in each capsule, oval, angled; hilum oblong, oblique. 



From C. leptantha, with which this species is closely allied, it differs 

 mainly in the greater length of flowers and pedicels. 



Type locality: Culiacan, Sinaloa, Mexico. 



Specimens examined : Mexico : Sinaloa; Culiacan (Schaffner, without date or number, 

 the type, in the N. Y. Bot. Gard. Herb.; Brandegee in 1904 under the name of C. palmeri). 



