1907] Hall. Compositae of Southern California. 63 



villous-arachnoid, rarely glabrous; leaves oblanceolate, spatulate, 

 01- cuneate-oblong, 1 to 3 cm. long or the lower twice this length 

 and the numerous fascicled ones much shorter, acutely toothed or 

 the upper narrow ones often entire : involucre narrowly to 

 broadly turbinate, 7 or 8 mm. high, 15 to 35-flowered ; its bracts 

 with distinct green tips, commonly granulose on the back and 

 with ciliate or erose white margins, varying from obtuse to acute 

 and cuspidate in the same head, sometimes bearing an indistinct 

 resinous gland : achenes linear-turbinate. 



Common in the Upper Sonoran Zone west of the mountains 

 throughout Southern California. Quite variable in foliage, in- 

 florescence, and involucre : when the branches are very leafy, 

 villous-arachnoid, and branched above, it is 7. villosa Greene 

 ( Santa Monica, Hall, no. 3276, etc. ) . When this form has a more 

 compactly cymose inflorescence, obtusish bracts, and short broad 

 leaves, it is /. latifolia Greene (Santa Cruz and Santa Kosa isl- 

 ands, ace. to Greene; San Miguel Island, Greene; San Luis Obis- 

 po, Mrs. Summers, no. 394; etc.). A more marked form is /. se- 

 doides Greene, which has prostrate stems, obovate succulent 

 leaves, a nearly glabrous herbage, and crowded heads ( Santa Cruz 

 Island, Greene), yet this differs from 7. latifolia only in pubes- 

 cence and habit; and specimens gathered at San Luis Rey, San 

 Diego Co., by Mrs. Brandegee vary from almost exact duplicates 

 of Greene's Santa Cruz specimens (duplicate types!) to good 

 "latifolia." Material from San Clemente Island, Aug. 25, 1894, 

 Brandegee, has the smooth succulent herbage of sedoides but 

 the leaves are narrow and inflorescence various. All of these 

 are of course mere forms due to varying edaphic conditions, 

 proximity of salt water, winds, etc. 



7. decumbens Greene is a slender, decumbent form with nar- 

 row, entire or toothed, scattered leaves and pedicellate heads; 

 the type was from clay depressions on the mesas near San Diego, 

 but on nearby hillsides it is replaced by a form exactly its coun- 

 terpart except that the stems are erect. When the herbage is 

 scabrous and the inflorescence leafy, we have 7. microdonta 

 Greene. Specimens gathered in somewhat saline soil, San Ber- 

 nardino Co., Oct., 1887, by Parish, although plainly of var. 

 vernonioides, have narrow mostly entire leaves; and other inter- 



