9 ENGELMANN—CUSCUTA. [459] 
that can furnish them nourishment, even on their own branch- 
owers. i at is even the case with the most exclu- 
. Europea, on vetches, C. Vicia ; ; G. Gronovii in shaded 
oes soil, on Saururus, C.Saururi ; the overgrown form of 
Africana is is C. Capensis, etc. 
The haustoria (suckers) of Cuscuta deeply penetrate into 
the tissue of the nurse, and they, with parts of the stem im- 
bedded in this tissue, are able to aeolian the plant after all 
external vestiges of the stem have been rubbed off. ‘This the 
ty of C. Epithymum which has become a -_ to some green- 
houses in Europe; I have observed the e fact in different 
species which I have had under oulelpations especially in 
inflexa. 
The species of Cuscuta naturally arrange themselves in 
— large groups, distinguished by their styles and stig- 
vs “Those with two equal styles and elongated stigmata. 
They are natives of the old pel 2 ccaleinete and have rare- 
ly and only temporarily been introduced with cultivated plants 
t 
into America. eget with flax into some of our “ 
ha angele —— oe vetches in Hayti.) They 
Cuscuta d Epili 
cuta, Des 
2. Those wih hiss unequal styles, and abbreviated, usually 
capitate, stigmata. They abound in Ameri ca and Oceanica, and 
8 ven 
Buchinger Ann. Se. Nat. IX. 88 alm-Dyc’ ck; Phickinge 
F. Schultz in Jahrb. Pharm. it, Cassutha, DesM. ft. 
40; Grammica, DesM. Bull. Soc. Bot. "France, I. 295. 
