74 Monography of the North American Cuscutinece. 
very variable species. The stamens and pistils are as long, or 
rather a little shorter than the corolla, but the latter are elongated 
after flowering. ( Cuscuta Americana , Hooker?)- 
4. Cuscuta Saururi. —It is very gjpbable that Cuscuta umbro- 
sa , Beyrich, ex Hooker, is the same ; which name must therefore 
be substituted for mine, though not quite appropriate. This plant 
is very nearly related to the former species, but can always be dis¬ 
tinguished by the more open, campanulate corolla, which in C. 
vulgivaga is globose-campandlate, the thinner texture of calyx 
and corolla, which is destitute of the pellucid dots, and the oblong 
lobes of calyx and corolla, which are always more or less orbicu¬ 
lar in C. vulgivaga. Large, overgrown specimens of C. vulgi¬ 
vaga have sometimes the Jobes of calyx and; corolla as long as 
the tube, but can always be recognized by the above characteris¬ 
tics. Such specimens are those from Alabama and Texas, men¬ 
tioned in this Journal, Yol. xliii, p. 340. The true C: Saururi 
I have only received from western New York, and from this 
neighborhood; where it grows in abundance on Polygonum, Sau- 
rurus, etc. in a few localities. 
I must mention here two specimens of a Cuscuta received from 
Mr. M. A. Curtis, collected, one in Massachusetts, the other in 
North Carolina. In their principal characters they agree with C. 
Saururi , but the flowers are much smaller and frequently 4-part- 
ed; the linear oblong, obtuse lobes of calyx and corolla are rather 
longer than the tube; the filaments subulate, shorter than the limb; 
Ovary with a stylopodium; styles short and thick; capsule ?‘ 
An examination of more complete specimens and the living 
plants must show whether there is a constant difference between 
this eastern plant and the western C. Saururk But I may here 
remark, 1 that'the eastern form of C. vulgivaga is also mnch 
smaller than our western form, and from Connecticut I have also 
received a tetramerous C. vulgivaga ! 
5. Cuscuta verrucosa.— Under this name I have confounded 
two Texan species: the description is chiefly taken from the fol¬ 
lowing species, but the figure refers to this one, which was first 
collected by Drummond and afterwards by Mr. Lindheimer, both 
times o n Petalostemon multiflorum. The description must be 
altered:—C. verrucosa, cymes umbelliform, compound; flowers 
peduncled (small), 5-parted; calyx campanulate, verrucose; seg¬ 
ments ovate, somewhat obtuse, shorter than the globose-campa- 
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