214 University of California Publications in Botany. L V L - 3 



what compressed, minutely hispid on both faces but the margin 

 glabrous. 



Occurs sparingly as a waif along the streets of San Diego. 

 Riverside, and Los Angeles. Native of Australia. 



2. C. coronopifolia L., Sp. PL 892 (1753). 



Herbaceous perennial, often subaquatic and then rooting from 

 the lower nodes : herbage somewhat succulent, glabrous : stems 

 commonly many and clustered, decumbent or ascending, 1 to 4 

 dm. long: leaves linear, lanceolate, or oblong, entire to coarsely 

 toothed or pinnatifid on the same plant, dilated at base into a 

 short sheath around the stem : heads depressed, 8 to 10 mm. broad : 

 pistillate flowers in a single row, their pedicels becoming one- 

 half as long as the involucre, without corolla ; disk-flowers on 

 much shorter pedicels. 



Well established along streams and in wet ground. Native 

 of South Africa. 



87. SOLIVA R. & P. 



Small depressed herbs with petioled and pinnately dissected 

 leaves and small discoid heads of greenish flowers sessile in the 

 forks. Involucre of nearly equal bracts in 1 to 3 series. Re- 

 ceptacle naked. Outer series of flowers pistillate and apetalous ; 

 innermost flowers perfect but sterile, the corolla 4-toothed. 

 Achenes obcompressed, pointed with the hardened persistent 

 style, callous-margined or winged, each wing continuing above 

 as a bristle or tooth. Pappus none. 



1. S. sessilis R. & P., Prodr. 113 (1794). 



Plant commonly 5 to 10 cm. across, minutely pubescent or 

 rusty-villous : one, two, or three of the heads sessile at the very 

 base, the somewhat tortuous stems radiating from under these: 

 involucral bracts 7 or 8, oblong, acute, greenish, pilose-pubescent : 

 pistillate flowers 9 to 12 : staminate flowers 7 to 9 : style stout, 

 subulate, conspicuously exserted beyond the disk-corolla : each 

 wing of the achene terminating above in an incurved tooth. 



Moist ground near the coast in Santa Barbara Co., ace. to 

 Gray; Arroyo Grande, San Luis Obispo Co., Miss King. Prob- 

 ably introduced from Chile. 



