y Ov somewnat glandular herbs with alternate 
entire leaves which are sessile and ozten decurrent upon tne stem. Heads 
smali, discoid, tueir involucres lhemisyheric or ovoid, the bracts chafiy or 
scarious, commonly white and shining at least in part, arranged in several 
' loosely appressed series; receptacle naked, convex. Marginal flowers pis- 
tillate, fertile syiic central flowers perfect. Achenes columnar, bearins a 
pannus of sort deciduous bristles. 
o Low bushy annuals, 5-20 cin, tall; heads surrounded by leaf-like 
7 bracts, Yoriing oa leafy involucre G. palustre 
@ “rect perennials or nlemials, 50-90 em. tells: heads without leafy 
4 Aivesting oracts 
Z svems wiite-woolly throughout: leaves white-woolly on both 
/ oy ae 2 gx 2 7 
@ suriaces Q, Ye Mcrocevhalun 
Ww 6 vlar-“ubescent above, white-woolly bencatl 
3 Ge. ‘lacounii 
bike eee 
—_— 
Z stens thinly Pic tar-yudescent below; leaves <reen and cland- 
2 me A ee a tS 
Siam 
0 we sos 
Sa a a ee 
