1020 MISC. PUBLICATION 42 3, U. S. DEPT. OF AGRICULTURE 



126. MICROSERIS 



Subscapose annual; leaves narrowly linear and entire, or pinnatisect 

 into narrow lobes ; heads solitary ; corollas yellow, often drying purplish; 

 pappus of 5 linear-lanceolate, scarious, 1-nerved, bifid paleae, as long 

 as the achene or longer, the midrib excurrent as a slender bristle 

 shorter than the body of the palea. 



1. Microseris linearifolia (DC.) Schultz Bip., Pollichia 22-24: 308. 

 1866. 



Calais linearifolius DC, Prodr. 7: 85. 1838. 



Uropappus linearifolius Nutt., Amer. Phil. Soc. Trans, ser. 2, 



7: 425. 1841. 

 Uropappus pruinosus Greene, Leaflets 1: 213. 1906. 



Mohave County to Graham, Gila, Santa Cruz, and Pima Counties, 

 up to 5,000 feet but usually lower, common on plains, mesas, and 

 foothills, March to June. Idaho and Washington to New Mexico, 

 Arizona, and Baja California. 



127. KRIGIA '< 



Slender perennial herb; leaves chiefly basal, oblanceolate or spatu- 

 late, entire or sinuate-dentate; stem leaves few, small, sessile and 

 somewhat clasping; heads few, yellow; involucre of about 9 to 18 thin 

 equal phyllaries; pappus of 10 to 15 small oblong squamellae, and an 

 equal or larger number of much longer capillary bristles. 



1. Krigia biflora (Walt.) Blake, Rhodora 17: 135. 1915. 



Hyoseris biflora Walt,, Fl. Carol. 194. 1788. 

 Hyoseris amplexicaulis Michx., Fl. Bor. Amer. 2: 87. 1803. 

 Krigia amplexicaulis Nutt., Gen. PL 2: 127. 1818. 

 Cynthia viridis Standi., Contrib. U. S. Natl. Herbarium 13: 

 357. 1911. 



Willow Spring, southern Apache County (Rothrock 218, Palmer 539), 

 Lakeside, southern Navajo County (Harrison 5505), 6,200 to 7,200 

 feet, June. New York to Minnesota, south to Georgia, Texas, and 

 eastern Arizona, 



128. ANISOCOMA 



Low, scapose, winter annual; leaves pinnatind; scapes 1-headed; 

 heads pale yellow; involucre strongly graduated, 1.2 to 2.7 cm. high, 

 the phyllaries orbicular (the outer ones) to linear-oblong, broadly 

 rounded to obtuse, thin, appressed, with a usually purplish midline 

 and a pale scarious margin; pappus readily deciduous, of about 5 long 

 and 5 much shorter bright white plumose bristles, inserted within the 

 apical border of the achene. 



1. Anisocoma acaulis Torr. and Gray, Boston Soc, Nat. Hist. Proc. 1: 

 212. 1845. 

 Peach Springs to Kingman and Chloride (Mohave County), 3,000 

 to 4,000 feet, plains and mesas, March to May. Nevada, northwest- 

 ern Arizona, and eastern California, 



17 Reference: Standley, P. C . a revision of the cichoriaceous genera krigia, cynthia, and cymbia. 

 Contrib. U. S. Natl. Herbarium 13: 351-357. 1911. 



