POLYGONACEAE. 



107 



5. E. parvijolium. 



E. fasciculatum. 

 E. kennedeyi. 



Perianth glabrous. 

 Leaves narrowly oblong, 

 strongly revolute and fasci- 

 cled. 

 Plants caespitose. 

 Involucres solitary, often secund along 

 the virgate branches. 

 Perennials with short densely leafy 

 caudex. 

 Leaves rounded, usually brown 



on the margins. 

 Leaves not rounded. 



Involucres 2-3 mm. long. 

 Involucres 4-6 mm. long. 

 Annuals. 



Stems and leaves white-woolly. ^ 

 Involucres narrowly turbi- 

 nate, 2 mm. long. 

 Involucres cylindric, 4 mm. 

 long. 

 Stems glabrous or glabrate. 

 Involucres 5 mm. long. 

 Involucres 3 mm. long. 

 Perianth stipe-like at base, glabrous, bright 

 sulphur yellow or tinged with red. 



1. E. thurberi Torr. Annual, very slender, about 15 cm. high, 

 much branched below the middle, with ovate acute bracts at the 

 forks, tomentose below the panicle; leaves subbasal, rounded- 

 ovate, about 1 cm. long, undulate rugose, pubescent above, white 

 tomentose beneath; pedicels slender, about 2 cm. long, erect or 

 spreading, involucres campanulate, less than 2 mm. high, cleft 

 nearly to the middle; flowers rose-colored or white, outer segments 

 rounded, much broader than the inner lanceolate ones. 



Common on dry plains and foothills from Pasadena eastward; 

 also in the Santa Ana Mountains. 



2. E. latifolium Smith. Caudex indurate, its branches few, 

 short, very leafy; scapes not fistulose, 2-5 dm. high; leaves oblong 

 to ovate, 2.5-5 cm. long, often undulate and becoming glabrate 

 above; bracts triangular; heads large and dense, 12-20 mm. broad, 

 solitary and terminal or few in a simple umbel; involucre tomentose, 

 4 mm. long; flowers glabrous, light rose color, 3 mm. long. 



Bluffs near Santa Monica. 



3. E. nudum Dougl. Caudex sparingly leafy; scapes rather 

 slender, fistulose, 3-6 dm, high, sparingly branched above; leaves 

 broadly ovate or oblong, obtuse, 1-5 cm. long, on slender petioles, 

 undulate, densely tomentose beneath, becoming glabrate above; 

 involucres usually 3-6 in each cluster, glabrous or nearly so, 4-6 

 mm. high; flowers glabrous or somewhat villous, 2-3 mm. long, white 

 or rose color. 



Occasional on Catalina Island and on the mainland east of our 

 territory. August-September. 



