(81) 



Sub-Family 1. Tuhidiflorce. 

 Flowers, at least of tlie disc, tubular. 



Tribe 1. Asteroide.e. 



Anthers without tails. Style branches of 

 disc-flowers, flat, with an appendix. Leaves 

 alternate. 



a. Parts of the pappus of definite number. 

 1. Gutierrezia l^ag. 



Superflua. Heads few-flowered. Eay -flowers 

 about 3, ligulate; disc-flowers about 5. Scales 

 of the involucre coriaceous, imbricate, their 

 tips green, reflexed. Akenes terete. Pappus 

 of about 9, paleaceous scales. — U . ^^ . Flowers 

 yellow. 



1. G. Californica. Torr. & Gray. Suffru- 

 tescent ; leaves linear. — Dry river beds. — 

 Sonoma. Livermore. Summer. 



2. Grindelia Willd. Gum-plant. 



Superflua. iEqualis. Head Go-flowered. Kay- 

 flowers ligulate, 1-seriate. Scales of the hem- 

 isphserical involucre in several series, their 

 green tips squarrose. Akenes compressed. 

 Pappus aristate. 



Resinous herbs; flower buds before opening, 

 bearing a drop of milky-looking resin. — 71- ^ • 

 Flowers yellow. 



4a 



