SUNFLOWER FAMILY 519 
Cirsium botrys Petrak, Beih. ge arth 35: 483. 1917. 
Cirsium howellit Petrak, op. cit 
Cirsium ciliolatum J. T. Ho well, pan West. Bot. 9:9. 1959. 
ennial herb reproducing by seed and by aerial se ce arising from slender horizontal roots 
2 
ng abou 
rib, white-arachnoid below, gray-green-arachnoid above; lower cauline leaves oblong-elliptic or 
oblanceolat te, to 2.5 dm. long, 1 dm. wide, pinnately parted into de tol d or ovatish, y ipupad e or lo 
divisions, the divisions spinulose ciliate and ti ped by short weak spines, the bla narrowed to a 
slender; petiole-like base or the leaves sessile by a broa ae ned base that is shortly ee as spinu- 
lose wings ; upper leaves eer less deeply parted and sessile by a broader-winged base; upper- 
most leaves on cae peduncle-like bran ee ee sacha he under the heads reduced and bract-like ; 
ig as aan ize, 3-4 cm. long, 2- road; involucre campanulate or somewhat constricted 
nea shore a subglobose Meee “thialy arachnoid, glabrescent ;  hpecme: numerous, we 
craters po closely imbricate in about 6 series, subappressed-ascending or with short, spreading, 
herbaceous tips, the tip attenuate into a short stiff spine, the backs of all phtpfthiies "(beteot pos- 
\\ (wit 
4 
a a 4 Mijy , 
Sanen 
Bere \\ Wilh V. 
WK AA \ Mh . 
rates we ie 
5904. undulatum 
5905. Cirsium brevifolium 
