CATALOGUE. 273 



CONVOLVULACEiE. 



Calystegia SEPiUM, R, Br. From Florida to Canada and the Saskatche- 

 wan; New Mexico, Southern Idaho, (Burke,) and on the Western Coast 

 from the Columbia to Southern California, but rather rare. Humboldt Pass, 

 Nevada, and in the Wahsatch ; 5-6,000 feet altitude ; July-September (935.) 



Ckessa^ Ceetica, L. Stem branched, scarcely 1° high, canescent; 

 leaves ovate, acute, obtuse at base, sessile, crowded, hoary-pubescent, 2-3" 

 long ; flowers subsessile in the upper axils, spicate or capitate ; sepals ovate- 

 lanceolate, 1-2" long ; corolla scarcely longer. Var. Texjxillensis, Chois. 

 DC. Prodr. 9. 140. " Stems elongated; leaves oblong and smaller; capsules 

 4-seeded." — Northern Mexico andSouthern California. American specimens 

 in Herb. Gray., which are all referred to this variety, show the leaves quite 

 variable in size and shape, the flowers nearly sessile or on pedicels 2-3" long, 

 and the seeds in some cases solitary, large and oblong, in others 4, (as in 

 these specimens, which agree well with South American ones,) small and 

 compressed. Banks of Bear River near Brigham City, Salt Lake Valley ; 

 October. (936.) 



CuscuTA tenuifloea, Eng. From Illinois and Missouri to the Upper 

 Missouri ; New Mexico, Arizona, and Washington Territory, (Lyall.) Hum- 

 boldt Pass, Nevada; 6,000 feet altitude; September; on Aster and Caly 

 stegia. (937.) 



CuscuTA Oalifoenica, Chois. EngelmanrCs Rev. Cusc, Trans. St. Louis 

 Acad. 1. 499. Flowers on slender pedicels, loosely paniculate ; calyx small, 

 turbinate, 5-cleft, with triangular or lanceolate, acute or acuminate and some- 

 times recurved lobes ; corolla-lobes very slender, lance-linear, acute or acu- 

 minate, erect or spreading, in fruit mostly erect or connivent ; scales wanting 

 or indicated by a narrow membrane connecting the adnate bases of the fila- 

 ments; styles capillary, unequal, at least equaling the small usually globose 

 ovary ; stigmas capitate ; capsule indehiscent, baccate, enveloped by the 

 corolla ; seeds often solitary, subglobose, strongly hooked, ¥' long. Var. 

 geacilifloea, Eng. Flowers slender, lj-2i" long, the corolla-tube as long 

 as the very narrow lobes and often exceeding the calyx ; filaments often short, 

 or equaling or exceeding the linear-oblong anthers ; styles equaling or much 



' CEESSA, L. Sepals 5. Corolla funnelfona, 5-oleft. Stamens exserted. Styles 3 ; stigmas capi- 

 tate. Ovary simple, 2-ceUed, 4-ovuled. Capsule dehiscent, 2-ceUed, 1-4-seeded, Embryo cotyledoUous. 

 Chois. DC. Prodr. 

 35 



