430 Compositaceae 
J. Involucre not glandular; stem-leaves ample, half-clasping at the wide 
base. W.C.  H. longiberbe How. 
JJ. Involucre glandular; stem-leaves reduced to foliaceous bracts. E. 
H. scouleri Hook. 
FF. Involucre with some stiff black-hairs. 
K. Leaves without stelate hairs beneath. W.C. E. (H. amplum.) 
H. cynoglossoides AT. 
KK. | Leaves with stellate hairs beneath. U. 
H. barbigerum Gr. 
EE. Involucre 8 mm. high, black-hairy. C. E. 
H. gracile Hook. 

