GENERA AND SPECIES. 
Cassinia. 
1. Small erect shrubs with cylindric-linear leaves 
about 1 inch. 
Leaves scabrous above; phyllaries dull-white ; flowers 
within each headlet 6 to 12; heads in dense ‘corymbs 
Leaves white-tomentose peidath » ; headlets with 3 to 5 
flowers. 
Panicles long and loose; leaves short, recurved- 
pointed ; phyllaries transparent shining... 
Panicle not longer than broad, leaves long ; phyl 
laries white ; , a 
Leaves glabrous, keeled, acute ; vine mal: one 
flower in each headlet ; branchlets SOE? phyl- 
laries pale-yellow ; we ; , 
u. Very tall erect herb with large flaccid detinhee 
Heads in large loose terminal panicles ; headlets with 
many flowers i 
Podolepis. 
1. Heads ovoid-cylindric. 
Phyllaries yellow, wrinkled, acute; leaves lanceolate 
or ovate-lanceolate 
11. Heads hemispherical, exceeding 4 inch dia- 
meter. 
Phyllaries smooth, acute, yellow. 
Annual beset with cottony hairs; heads under 1] in. 
diameter 
Perennial, nearly Binns heads over 1 sich 
diameter 
Phyllaries wrinkled, eee heads relatively large. 
Stout, perennial, glabrous, or beset with loose 
cottony hairs 
1m. Heads almost hemispherical, under $ inch 
diameter ; phyllaries smooth, yellow. 
Erect annuals with filiform branches. 
Leaves ovate to lanceolate, small, stem-clasping, 
cottony hairy; all the flowers of about equal 
length : dels cA ba 2 ef 
Leaves linear, glabrous; marginal flowers longer, 
whitish ... ; 
Gnaphalium. 
Clusters of heads terminal, leafless; leaves flaccid ; 
densely woolly ... 
123 
aculeata 
arcuata 
laevis 
punctulata 
spectabilis 
rutidochlamys 
canescens 
acuminata 
rugata 
Lessoni 
Siemessenia 
luteo-album 
