CATALOGUE. 
273 
CONVOLVULACE^. 
Calystegia SEPiUM, R. Br. From Florida to Canada and the Saskatclie- 
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.) 
Cressa^ Cketica, L. Stem branched, scarcely 1^ high, canescent; 
leaves ovate, acute, obtuse at base, sessile, crowded, hoary-piibescoiil, 2-3" 
long; flowers subsessile in the upper axils, spicate or cajutate ; s<']);ils ovafi;- 
lanceolate, 1-2" long; corolla scarcely longer. Var. Tkuxilt.knsis, Cliois. 
DC. Prodi-. 9. 140. " Stems elongated ; leaves oblong and snmllcr ; cjipsules 
4-seeded." — Northern Mexico and Southern California. Ameiiciiii specimens 
in Herb. Gray., which are all referred to this variety, show Ihc 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, (ns 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 tenuiflora, 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 Cahj 
stegia. (937.) 
CuscuTA Californica, Chois. EngelmanrHs Rev. Cusc, Trans. St. Louis 
Acad. 1. 499. Flowers on slender pedicels, loosely paniculate; calyx small, 
turbinate, 5-cleft, with triangular or lanceolate, acuti^, 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 coniiiveiit ; scales wanting 
or indicated by a narrow membrane connecting the adnate l)ases of tin- tlla- 
ments; styles capillary, unerpial, at least erpialing the small usually irlobose 
ovary; stigmas capitate ; capsule indehiscent, l»accate, enveloped by the 
corolla; seeds often solitary, subglobose, strongly hooked, long. Var. 
GRACILIFLORA, Eng. Flowcrs slender, lj-2i" long, the corolla-tube as long 
as the very narrow lobes and often exceeding th(> calyx ; tilaments often short, 
or equaling or exceeding the Hnear-oblong anthers ; e(pialinijr or much 
' CRESSA, L. Sepals 5. Corolla funnelform, 5-cleft. Stamens exserted. Styles 2 ; stigmas capi- 
tate. Ovary simple, 2-celled, 4-ovule(l. Capsule debisct-nt. 2-celled, 1-4-Beeded. Embrj o cotyledonous. 
Chois. DC. Prodr, 
35 
