Compositaceae 413 
E. Hlerbage pubescent; stem hirsute or vilous. C. E. 
A. cordifolia Hook. 
EE. Herbage glabrous or very nearly so. 
F. Akenes short-pubescent. N. 
A. cernuua How. 
FF. Akenes glabrous or almost so, sometimes glandular. 
G. Akenes with scattered glandular dots; leaves often glandular-dotted on 
both sides. C. E. A. gracilis Rydb. 
GG. Akenes glabrous or with a few hairs; leaves not glandular. W. C. E. 
A. betonicaefolia.) A. latifolia Bong. 
DD. Basal leaves obtuse to narrowed at base. 
H. Leaves dentate or denticulate, mostly rather wide. 
I. Pappus whitish, barbellate. 
J. Herbage viscid-glandular; upper leaves much reduced. 
K. Stem-base corm-like, covered with reddish tomentum. C. E. (A. al- 
pina for our region. ) 
A. pedunculata Rydb. 
KK. Stems from horizontal rootstocks. C. E. 
-, A, fulgens Pursh 
JJ. Herbage not glandular or merely with minute glandular dots; upper 
leaves but little reduced. C. E. (A. aurantiaca.) 
A. rydbergii &r- 
II. Pappus gray-brown, somewhat plumose. 
: L. Upper leaf-surface glabrous but sticky. W. C. E. (Probably A. 
4 macouti. ) A. amplexicaulis Nutt. 
LL. Upper leaf-surface pubescent. 
M. Leaf-blade decurrent on the petiole. C. E. (A. chamissonis in part.) 
A. mollis Hook. 
MM. Leaf-blade not decurrent on the petiole. C. E. (A. aspera; A. 
chamissonis in part.) 
4 A. subplumosa Gr. 
HH. Leaves almost entire, rarely lanceolate. 
i N. Herbage white-tomentose. C. E. (A. cana.) 
- A. foliosa Nutt. 
f NN. Herbage glabrous or nearly so. C. E. 
A. longifolia Eat. 
CROCIDIUM 
Leaves alternate. Heads radiate, many-flowered; involucre hemi- 
its bracts 8—12, nearly equal, thin-herbaceous; receptacle conic. 
long, perfect, yellow. Disk-flowers 5-toothed, yellow. Akenes 
ed, rough with hyaline oblong papillae. Pappus-bristles in | 
ciduous, usually none in the ray-flowers. (Gk. krokis—the 
Faxils are hairy.) W. E. 
C. multicaule Hook. 
_ GACALIOPSIS 
dm. high, floccose-woolly to glabrate. Leaves, in ours, 
_ long-petioled. Heads rayless, many-flowered; involu- 
keeled, I-veined; receptacle flat. Flowers perfect, 
es linear, glabrous, 10-striate. Pappus-bristles many, 










white, barb 
oolliness o 





Herbs, perennial; o 
ernate; palmately 5—‘ 
re-bracts sub-scarious, in 
fertile, 5-toothed, yellow. 
