|.",s Senecioneae 



mostly in 1-2 scries. Receptacle naked. Pappus-bristles 

 soft, commonly copious and usually white. 



Shrubby or suffrutescent plants. 

 Rays wanting. 



Bracts imbricated; leaves mostly scale-like. 61. Lepidosiwiutm 



Bracts in 1 series; herbage woolly. 62. Tetradymia. 



Rays present. 63. Senecio. 



Herbs; rays present or wanting. 63. Senecio. 



61. LEPIDOSPARTUM Gray. 



A low rigid green scaly-bract e«l almost leafless shrub, 

 somewhat fastigiately branching, and bearing some- 

 what corymbose or racemosely arranged heads of pale 

 yellow flowers. Involucral bracts of 2 sets, the inner 

 long, linear, 8-12 in 2 or more series, the outer much 

 shorter and imbricated. Receptacle naked. Kays none. 

 Disk-flowers with long tube and lanceolate-linear spread- 

 ing lobes. Achenes oblong, terete, 8-10-nerved, with 

 large epigynous disk. Pappus copious, of soft white 

 capillary bristles. 



1. L. squamatum Gray. Branching shrub, broom-like, 6-12 

 din. high ; young seedlings and shoots rloccose-tomentose,and with 

 spatulate entire leaves, becoming glabrous and nearly leafless in 

 age; heads 6-10 mm. high, terminal on the branches. 



Frequent in dry washes in all our interior valleys. July-October. 



62. TETRADYMIA DC. 



Low rigid canescently tomentose shrubs with alter- 

 nate narrow entire leaves and eymose-clustered discoid 

 beads of yellow (lowers. Involucre long and narrow. 

 Of 4-6 bracts. Corollas with long tube, the narrow 



spreading lobes longer than the campanulate involucre. 

 Achenes terete, short, 5-nerved, from long-villous to gla- 

 brous. Pappus of fine and soft long capillary white or 

 whitish bristL 3. 



I. T. comosa Gray. Branches erect, elongated, t—8 dm. high ; 

 primary leaves linear, softly Hncrnse-tonientose.the earlier 6-7 cm. 



