(101 ) 
minate, with scarious margins, each completely 
enclosing the corresponding ray-akene. Recep- 
tacle flat, with 5 pales between the disc and 
ray. Pappus 0.—©. Flowers yellow, whitish. 
1. L. ramostssima Nutt. Pubescent.--©. 
Tamalpais. Summer. 
2. L. concesta Greene. Hispid —©. Tam- 
alpais. Summer. 
36. Layia Hook. & Arn. 
Superflua. Head o-flowered; ray-flowers cune- 
iform, 3-dentate. Involucre l-seriate, herbace- 
ous; scales acuminate, with scarious margins, 
completely enclosing the ray-akenes. Receptacle 
flat, with a row of palez between disc and ray, 
or paleaveous throughout. Ray-akenes linear, 
attenuate at the base, and with a flat area at 
the top; pappus of the disc various; of the 
ray 0.—©. 
1. J. carnosa Torr. & Gray. -Pappus bris- 
tles plumose; ray-flowers inconspicuous, small. 
Sands of seashore. Marin County. Spring. 
2. L. HeTeRoTRIcHA Hook. & Arn. Pappus- 
bristles plumose, their hairs erect; ray-flowers 
large, canspicuous, 3-lobed, white.—Antioch. 
Livermore. Niles. Spring. 
3. L. Evecans Torr. & Gray. Pappus- 
bristles plumose, their hairs woolly and inter- 
laced; ray-flowers conspicuous, yellow.—Marin 
County. Spring. 
