130 S¥YNGENESIA, EQUALIS. 
8. discolor. Muhl. and Willd. sp. pl. Stem tall, leafy, 
and divaricately branched; leaves anceolate, sessile or am- 
icaule, more or less deeply pinnatifid, above smooth, 
bencath tomentose, segments bilobed, partly ciliated and 
terminated by spines; calix subglobose, scales ovate spiny. 
Has. Common in Pennsylvania and New Jersey, usually 
on the bushy margins of open swamps. Ons. Stem $ to 
6 feet high, scarcely pubescent, considerably branched, 
branches rather slender. Leaves variable, always pinna- 
tifid, smooth above, often partly pseudopinnate or divided 
almost down to the mid-rib, in this case, the segments di- 
verging by pairs are extremely Spiny and -ensiform; in 
- 
Others the segments are shortly bitobed and slenderly 
spiny. Calixnot commonly large, subglobose, and rather 
smooth, naked, or sometimes partly irfvolucrate, the scales 
*ppressed and terminated by long afid slender spines; flo- 
‘Fets reddish-purple. Fl. July to September. ‘This spe- 
Cles appears to be allied to C. cynarcides of Crete, judging, 
“vet, merely from an ambiguous definition, it is per - 
haps at the same time very distinet. : 
9. * pumilus. Stem low and retrorsel pilose, 1 to 8- 
ered; leaves of the same colour on both sides, amplex- 
oblong-lanceolate and pinnatifid, segmen $ irre 
bed, ciliated and terminated with spines; calix 
d partly globose, naked, scales app , lanceo- 
me se ND Spiny: C. edoratus. Mubl. Catal: Has. 
eath densely pilose. Stem 1 to 2 feet high 
ecumbent. wers reddish-purple, larger 
of North American thistle, and not 
. Stuve, M.D. on the banks of the Hudson, 
\e city of New York. 
