SUNFLOWER FAMILY 567 
1.7-2.8 cm. in diameter ; phyllaries commonly in 2 length-classes, more or less villous with septate 
A eam some = digo bra hae h and gland-tipped; florets yellow, frequently pinkish on 
drying ; ——_ 2.5-6.0 n or Fe lants from central California) 6-15 mm. long; aber ties 
be: 0 ke? or (plants Meat central California) 2.0-3.9 mm. long; outer achenes polymorphic, 
usually spindle shaped re ly 10-ribbed, tawny, sometimes the ribs abnormally developed, straight 
. sinuate, glabrous or h nat whitish es purplish, or the pericarp inflated to the obliteration of 
oeiieg ert capillary, anally 6-10 mm. long long. 
Dry requently weedy situations, ma er cilia Zone; mostly at lower elevations from British Co- 
lumbia on el! Lower California, be fg locality: “‘The plaing me Oregon.” Collected by Nuttall. April-— 
July. Only the typical subspecies, described above, occurs in our 
154. PHALACROSERIS A. Gray, Proc. Amer. Acad. 7: 364. 1868. 
Glabrous perennial ay with a tuft of basal leaves and 1 to several 1-headed scapes. 
Involucre campanulate, 12-16 equal, narrowly lanceolate phyllaries. Flowers white. 
Achenes short-o ong, sles urely 4- peed slightly incurved. Pappus none. [Name from 
the Greek word meaning bald. headed, and seris, the Greek name for chicory. ] 
A monotypic genu 
5979. Agoseris heterophylla 
5977. Agoseris grandiflora 
5980. Phalacroseris bolanderi 
5978. Agoseris apargioides 
