CICHORIACEAE 1499 
. S.asper (L.) All. Stem 2-15 dm. tall: leaf-blades with rigid-tipped teeth: 
achene 2-2.5 mm. long, margined, ribbed and smooth.—Waste-places, fields, 
and roadsides, vr ge U. S. and S Can. 
Nat. of Eu.—(WW. I y: C5 uds dS. 4:) 
S. oleraceus L. Stem 1-18 dm. tall: 
le af-blades more divided than in S. iid 
with soft-tipped teeth: achene 2.5-3 
O se 
d pu NS. d waste-places, 
and fields, various provinces, U. S. and S 
Can. Nat. of Eu.—(W. 1. Mez., C. A., 
S. A.) 
Scolymus maculatus L., an annual, spin 
armed herb, with pinnately lobed eae 
each lobe term inating in a long spine, the 
stem with pi oad spine- nem wings, the 
involuere not spiny, bracts thin, herbaceous, flowers yellow; ius inclosed | by 
the chaff, has been found on ballast on the seacoast of N. C. Nat. of E 
