ENGELMANN—CUSCUTA. 457 
ulate, large or small; but their shape or size do not afford 
good and constant characters in this genus. 
The most peculiar organs of the flower are the epistamineal 
scales, which are ee in most of the anon t The simplest 
Steve of that organ (in C. inflexa, C. chl POCA DG, & etc.) exhibits 
late or truncate, more or less crenate or fimbriat 
‘owards the base the seales are always “adnate in ao mid- 
dle,” or, properly speaking, attached to both sides of the ad- 
nate filament. Their _ s usually connect with one another, 
foeming i maverted are 
flora an 
Asia, C. tomtom and @. C. Sandwichiana. In c Cali- 
fornica the inverted arch alone is sree entire or fringed ; 
in the others I find no trace of scales at 
These scales vy evidently lateral dilstations of the lower 
(attached) Prot. f the filaments, erga of the character of 
stipules, as Prof. A. Braun suggests; or they are a sort of sta- 
mineal pide: attached at base to the * coralts, but nota du- 
plication of the same. | 
Pi gio emetic form and size of the scales furnish some of 
the best cters in this genus, | but tag: A are not entirely re-- 
liable ; _— while in some species very constant, in 
others ey are found to vary pron ost We It is « oubtt 1 
whether a really te tay form of C. Europea exists; C. Cal- 
bg oe —— scales, seems to occur also” in a va-— 
ti Thee vary an and pistils are more vellabie for ne determina- 
a. of species, just as they furnish the most important char- 
aoe r the distinction of the sections. The 
anee, as ¢ same with short or ie with 
— and as saa aces lake at oe Meogro become 
