constituted two species, C. stellata and C. senifolia; the 
former being characterized by the broader leaves, and the 
whole plant being glabrous; the latter, by the narrow 
leaves and downy plant. Thus the specimen we have given 
is destitute of hair, like C. stellata, but has the narrow leaves 
of C. senifolia of this author. This species will probably 
unite with the C. éripteris, L. to form Lessine’s Genus 
of CurysosTemMA. : 
Descr. Root perennial. Stem erect, straight, rigid, 
angled, glabrous, as is the whole plant in our specimens ; 
which, in other instances, is more or less downy : branched 
upwards in asubtrichotomous manner, the flowering branches 
forming a sort of corymb. Leaves opposite, deeply tri- 
partite, somewhat rigid, the segments lanceolate, (some- 
times: broadly so,) spreading, entire, acute, the uppermost 
ones, among the flower-stalks, not unfrequently undivided. 
Involucre glabrous : outer of about eight linear, nearly 
erect, green leaves ; inner of about as many ovate, membra- 
naceous, brownish ones. Radical florets about eight, spread - 
ing, oval, full yellow, abortive ; those of the disk greenish - 
yellow ; the fruit oblongo-cuneate, compressed, “slightly 
winged at the margin, especially upwards. Pappus ob- 
solete; in the perfectly ripe fruit constituting a small 
bidentate membrane. os , ee 
——— 
Fig. 1. Floret of the Circumference. 2. Floret of the Disk :—magnified. 
