SUNFLOWER FAMILY. 571 



1. T. Wrightii G-ray. Annual; stems asaurgent, 6 to 9 in. high; 

 leaves oblong or linear-lanceolate, remotely serrate or entire, aurioled 

 at base, f in. long or less; heads 2 to 2J lines broad; aohenes 4-angled, 

 the angles hispidulous toward the summit; pappus of 4 barbellate 

 bristles with an equal number of intervening but very small fimbriate 

 palese. — (Biolettia riparia Greene.) 



Lower San Joaquin Eiver. Sept. 



92. COLEOSANTHUS Cass. Bkickellia. 



Perennial herbs or suffrutescent plants with alternate petioled 

 leaves and white or whitish flowers in terminal or subterminal 

 clusters of narrow heads. Involucre Imbricated, its bracts striately 

 nerved. Eeceptacle naked. Corolla slender, 5-toothed. Achenes 

 with 10 nerves or ribs. Pappus of numerous scabrous or barbellate 

 capillary bristles mostly in a single series. (Greek koleos, sheath, 

 and anthos, flower. ) 



1. C. Californicus (T. & G.) 0. Ktze. Stems many from the 

 shrubby base, virgate or paniculately branching, 2 to 3 ft. high; 

 leaves roundish or triangular-ovate, 3-ribbed and roughish, somewhat 

 irregularly serrate, 2^ in. long or less; heads spicate or racemose 

 along the leafy branches, 5 or 6 lines long, 10 to 15-flowered, often 

 more or less nodding; bracts of the involucre, especially the inner, 

 with thin obtuse straight tips. — (Brickellia Californica T. & G.) 



Gravelly stream beds of the Coast Kanges, especially toward the 

 interior: Mendocino Co.; Calistoga; Vaca Mountains and southward 

 to Southern California. 



