114 Polygonaceae 



purplish, leaves all basal, tomentose beneath, oblong, obtuse, 

 2.5-6 cm. long ; bracts not acerose ; involucres in rather close 

 cymes, 3-6 mm. long, the alternate teeth larger, nearly equal; 

 flowers nearly sessile, 4-5 mm. long, glabrous or sparsely villous 

 on the midvein, cleft to near the middle ; segments oblong, en- 

 tire, the alternate ones about half as long and narrower; stamens 

 inserted at base. 



Very common and general. May-July. 



5. C. procumbens Nutt. Slender, procumbent, branching 

 from the base and diffuse, villous-pubescent, often yellowish ; 

 leaves spatulate, 2.5 cm. long or less, not tomentose, bracts 

 mostly small; involucres 2-3 mm. long, the alternate teeth 

 strongly divergent, about equaling the tube, uncinate; flowers 

 sessile, 2.5 mm. long, glabrous or somewhat villous, segments 

 equal, narrowly oblong, obtuse, entire; stamens inserted at the 

 base. 



Frequent in the San Gabriel Mountains, Davidson. 



H- - Bracts more or less foliaceous. 



6. C. Parryi Wats. Branching from the base, 5-8 cm. high, 

 villous-pubescent; leaves narrowly oblanceolate, 2.5 cm. long, 

 not tomentose ; lower bracts as large, similar, pungent ; tube of 

 the involucre 2 mm. long, the alternate teeth strongly divergent, 

 as long or longer; flowers nearly sessile, white or pinkish, 3 mm. 

 long, villous on the nerves, cleft nearly to the middle ; segments 

 recurved, somewhat undulate, oblong-ovate, acutish, crenate, the 

 inner ones about the same length, but narrower; stamens insert- 

 ed at the base. 



Scarcely reaching our eastern borders, but rather frequent on dry plains 

 and foothills in San Bernardino and Riverside Counties. 



7. C. Fernandina Wats. Procumbent, rather stout, strongly 

 silky-pubescent, 6-10 cm. long; leaves narrowly oblanceolate,. 

 not tomentose; lower bracts foliaceous, the upper narrowly 

 linear; tube of involucre 2 mm. long, the teeth stout, with 

 straight awns; flowers white, 2 mm. long; lobes nearly equal,, 

 broadly oblong, the alternate ones slightly narrower. 



First collected in San Fernando Canyon. Otherwise only known from 

 Chatsworth Park. 



8. C. Xanti Wats. Branching diffusely from near the base, 

 6-15 cm. high, villous-pubescent and tomentose ; leaves ovate- 



