Layia. COMPOSITE. 369 



villous wool all straight and erect, a little or sometimes much shorter than the rather 

 slender bristles. Hook. Ic. PL t. 326. Madaroglossa heterotricha, DC. 



Open grounds, through the western part of the State, especially in the San Joaquin Valley. 

 Heads with disk half an inch high ; the large and showy elongated rays three quarters of an inch 

 long. The copious stipitate black glands, intermixed with the short hispid and above apparently 

 somewhat viscid bristles, suggested the specific name. 



3. L. carnosa. Torr. & Gray. Dwarf and depressed, rising only 3 to 5 inches 

 high, more or less hirsute-pubescent : leaves succulent, spatulate or the upper linear- 

 oblong, the lower often sinuate-pinnatifid : heads small : rays 8 to 10, very short 

 (slightly surpassing the involucre), apparently white : akenes both of ray and disk 

 pubescent : pappus dull whitish, its slender bristles very sparsely plumose with 

 straight villous hairs to much above the middle. Madaroylossa carnosa, Nutt. 



Sands of the sea beach, San Diego (Nuttall), Monterey (Parry), Punta de los Reyes, Bigelow, 

 The rays (nowhere stated to be yellow) appear to be white, and they are very inconspicuous. 



* * Rays as well as disk-flowers yellow. 



4. L. hieracioides, Hook. & Am. A foot or so high, very hispid with long 

 and spreading rigid bristles, which above are somewhat viscid : leaves varying from 

 linear to oblong, laciniate-toothed or almost pinnatitid : heads small : rays 10 to 15, 

 small, a little exceeding the disk : disk-akenes minutely pubescent : pappus rusty- 

 brownish ; the straight and erect villous hairs rather scanty and little shorter than 

 the bristles. Madaroglossa hieracioides, DC. 



Open grounds, San Francisco to Monterey, &c. Stem not rarely spotted by the dark-colored 

 bases of the bristles. Leaves mostly only an inch or so in length. Heads only 3 or 4 lines high : 

 rays seldom 2 lines long ; their akenes sometimes showing rudiments of pappus. 



5. L. gaillardioides, Hook. & Am. A foot or two high, loosely branched, 

 hispid and glandular like the preceding : leaves lanceolate or linear, the lower com- 

 monly pinnatifid : heads pretty large : rays 1 2 to 20, orange-yellow, cuneate-oblong, 

 twice or thrice the length of the disk : disk-akenes silky-pubescent : pappus dull 

 white or rather rusty ; the erect and not abundant villous hairs all straight and con- 

 siderably shorter than the bristles. 



Open grounds, common through the western part of the State, especially near San Francisco 

 Bay. Rays in well-developed plants two thirds to three fourths of an inch long. Chaff of the 

 receptacle sometimes (as originally described) among the outer disk-flowers, but commonly only 

 between the disk and ray. In Bolander's collection from Forest Hill, Placer Co., are specimens 

 undistinguishable from L. pcntachceta of that locality, and apparently growing with it, but with 

 the pappus of the present species. 



6. L. elegans, Torr. & Gray. Resembles the preceding, but rather hirsute than 

 hispid, and the linear cauline leaves less pinnatifid : rays 10 to 12, lighter yellow, 

 obovate-cuneiform, about twice the length of the disk : pappus mostly white ; its 

 copious villous hairs much shorter than the awn-like bristles, the inner crisped and 

 interlaced. Madaroglossa elegans, Nutt. 



Open grounds, TJkiah to Santa Barbara and Los Angeles. In the pappus this resembles 

 L. ylandulosa ; and the rays are similar, except in their color and rather larger size. 



2. Pappus, receptacle, glandular herbage, and ivhole aspect of the preceding section, 

 but the (5 to 25) awns or bristles of the pappus naked, or rarely wanting. 

 CALLICHROA, Gray. (Callichroa, Fischer & Meyer.) 



7. L. pentachaeta, Gray. Sparsely hirsute or hispid as well as glandular, 

 loosely branched : leaves mostly pinnatifid and the lower even bipinnatifid, with 

 long linear lobes : rays large, golden yellow, oblong-cuneiform : disk-akenes minutely 

 pubescent, sometimes almost glabrous : pappus of 5 or rarely fewer rigid smooth 

 bristles, or sometimes wanting. Pacif. R. Rep. iv. 108, t. 16. 



Foot-hills of the Sierra Nevada ; on the Stanislaus (Bigeloic) and near Forest Hill, Placer Co. , 

 Bulander. Heads showy : the numerous apparently deep yellow rays half an incli or so in 

 length. 



