338  Monography of the North American Cuscutinea. 
fleshy, not membranaceous, and finely crenulate ; the lobes al- 
ways erect and somewhat incurved. The scales of the filaments 
are smaller than in any other of our Cuscute, and consist of one 
or two teeth on each side of the filament, (where it adheres to 
the tube,) thereby indicating the true nature of these singular 
“‘nectaria.” It appears to be rarer than the other species, and 
grows more on dry ground. 
3. CUSCUTA VULGIVAGA, 7. Sp. 
Stem branched ; flowers pedunculate, somewhat glomerate or 
more lax, generally 5-parted ; tube of the corolla deeply cam- 
panulate, longer than the pellucid-punctate open ( finally reflexed) 
lobes, and the roundish, carinate, obtuse and slightly crenulate 
segments of the calyx; scales convergent, fimbriate, united at 
the base ; styles about as long as the ovary (with the stylopodi- 
um ?); the remains of the corolla persistent at the base of the 
‘globose capsule. 
- Var. «. taxtrLora: flowers in loose cymes. 
6. cLomeraTa: flowers conglomerate. 
y. TeTRAMERA: flowers in umbelliform cymes, 3_-4-parted. 
This species has apparently not only the widest range of all 
the American Cuscutz, but is less restricted to the same genus 
‘or family of plants. Indeed I have scarcely met with it twice 
upon the same species. Var. «. is the southern and westerl 
form: Western New York on Decodon, Dr. A. Gray ; Missout 
on Cephalanthus and Amphicarpea, and Georgia, on ——‘* ** 
Carey ; Alabama, on Salix and Aster, S. B. Buckley. Vat B. 
is the northern form: my specimens are from Vermont, on Leer- 
sia, and New Hampshire, on Solidago, both from Mr. J. Carey: 
Var. 7. Connecticut, on Urtica, J. Carey. 
The Cuscuta vulzivaga, is perhaps in part the Cuseuta Amer 
jeana of Linneus, and of many later botanists. But their diag- 
noses are too incomplete to decide the point, and different species 
undoubtedly have been confounded under this name. 
Linneus himself (Spec. Plant. ed. 1, p. 124) referring to Gronev: 
Virg. and to Sloane, Hist. I, p. 201, t. 128, f. 4, confounds er 
distinct species. Which of them is to be the C. Americané * 
‘Linneus has only the following words: “ Cuscuta floribus P& 
duneulatis.””. Michaux, (I, 175): “Cuscuta, floribus pedicellah® 
-pentandris.” Pursh, (I, 116): “C. fl. pedunculatis umbellat® 
