206 



Descriptive Flora 



Page 



y. Bracts more than 4. 



r. Leaves rough, rays orange Zexmania — 232 



s. Rays yellow, leaves not 

 rough. 



(1) Leaves deeply seg- 

 mented Thymophylla— 239 



(2) Leaves not deeply 

 segmented. 



o. Leaves entire, gland - 



dotted Tetraneuris — 237 



p. Leaves toothed Bidens — 234 



n. Ray-flowers not all yellow or 

 orange. 



(1) Leaves all basal Gaillardia-— 239 



(2) Leaves not all basal Coreopsis — 233-4 



(b) Flowers white or grading into pink 

 or purple. 



r. Sap milky Pinaropappus— 244 



s. Sap not milky. 



(1) Rays present. 



o. Rays showy, about W long Melampodium— 226 



p. Rays inconspicuous ...Eclipta — 228 



(2) Rays none, flowers all tubular Eupatorium — 214-5 



(c) Flowers red or brownish-red. 



(1) Leaves all basal . . Gaillardia— 239 



y. Leaves with more than 1 vein at base, 

 a. Flowers yellow or orange, 

 m. Shrub growing in pockets and 



crevices of limestone rocks.. Laphamia — 237 



n. Plants not shrubby. 



(a) Leaf stalks with foliaceous 

 appendage at base. 



(1) Foliage blue-green, ill- 

 scented Ximenesia— 232 



(2) Foliage not blue-green, not 



ill-scented Encelia— 231 



(b) Leaf stalks not appendaged. 



r. Flowers about *4" across Calyptrocarpus — 233 



s. Flowers over across. 



1. Leaves rough, petals orange Zexmania — 232 



2. Petals yellow. 



