Monography of the North American Cuscutinea. 341 
but roundish and obtuse. 'The angles are formed by the margins 
of the lobes of the calyx and correspond with the petals, while 
in C. Coryli the five angles, formed by the five prominent mid- 
ribs, alternate with the lobes of the corolla. 
6. CuscuTa VERRUCOSA, 7. Sp. 
Stem low, branching; cymes loose, few-flowered; flowers 
(small), long-peduncled, 5-parted ; tube of the corolla campanu- 
late, shorter than the lanceolate acuminate lobes, and nearly 
equal to the ovate subacute segments of the verrucose or some- 
what hispid calyx; scales ovate, fimbriate, equalling the tube ; 
styles as long as the ovary ; capsule globose, surrounded at the 
base by the persistent corolla. 
Var. «. HIsprpuLA: inflorescence, and frequently also the branch- 
es, hispid or glandular-pilose ; lobes of the calyx acute, shorter 
than the tube of the corolla. 
8. Guaprior: cymes more or less glabrous, lobes of the calyx 
broader, somewhat obtuse, nearly as long as the tube of the co- 
rolla. 
Texas: var. «. in dry sterile prairies, west of Houston, on Eu- 
thamia, Schrankia, Aster, Ambrosia, Evolvulus, and other low 
herbs ; flowering in April and May, F. Lindheimer. (8. with 
the preceding variety, F'. Lindheimer: on Petalostemon, Drum- 
mond, (3d collection, No. 247.) * | 
This species is the lowest of all the American Cuscute, and 
has, together with the foregoing, the smallest flowers ; it grows 
on open prairies, in dry soil: in all these respects therefore it 
takes in Texas the place of Cuscuta Epithymum in Europe. 
Like that species it is not restricted to a few plants, but appears 
to creep over every thing in its way. It is the only Cuscuta 
known to me with any appearance of pubescence. 
~ Stem from four to six inches high, smooth (@.) or more or less 
hispidly pubescent with pellucid vesicular hairs, («.) especially in 
the inflorescence. Peduncles filiform, many times longer than 
the flowers. Calyx always rough, but the vesicles less hair-like, 
more glandular, or when dry like warts. In flowering, the ca- 
lyx is campanulate, or even somewhat turbinate, but soon after 
assumes a hemispherical shape, which is the one figured in the 
te. Lobes of the corolla very acute, spreading, white ; after 
flowering the tips incurved, turning brown. Stigmas globose, 
purplish-brown. 
