CHORIZANTHE. 6 1 



ments nearly equal, shortly cleft, broad oval ; stamens 9, anthers oval 5 

 embryo with oblong cotyledons and short radicle. 



Habitat: Sandy soil, San Diego and southward, forming yellowish- 

 green patches; a slender, partly erect form at.Colton, near San Ber- 

 nardino. 



23. C. Parryi, Watson, 1. c. Branching from the base, 3-12 inches 

 broad, hairy-pubescent; radical leaves ovate-lanceolate, with prominent 

 mid-rib, appressed-pubescent ; lower cauline bracts narrow foliaceous, 

 pungent, upper setaceous; involucres more or less scattered or clus- 

 tered on the secondary branches ; tube short-turbinate ; divisions 6, 

 unequal: 3 larger exceeding the tube, 3 smaller, intermediate, all 

 recurved and uncinate ; tlowers nearly sessile, tube short ; perianth seg- 

 ments deeply cleft, partly exsert : outer broadly ovate, recurved, and 

 folded, inner shorter and obscurely crenate ; stamens 9, filaments 

 hispid at base; styles and akene as in previous species; embryo with 

 ovate cotyledons and blunt radicle. 



Habitat: Gravelly plains about San Bernardino; usually associated 

 with C. Lastarriaa. 



24. C. Fernandina, Watson, 1. c. Spreading or assurgent, 3-8 

 inches broad, appressed-pubescent ; radical leaves lanceolate, obtuse, 

 tapering to a short petiole, smooth or pubescent, upper cauline bracts 

 narrow and pungent; involucres loosely scattered above; tube short, 

 sharply costate ; divisions 6, unequal, slightly divergent : 3 longer, about 

 as long as the tube, 3 intermediate, all with straight awns ; tlowers 

 short pedicellate ; perianth segments partly exsert, short cleft, nearly 

 equal, obtuse ; stamens 9 ; styles as long as the ovary ; embryo green- 

 ish, with oval cotyledons and blunt radicle. 



Habitat: Alluvial soil near San Fernando railroad station. First 

 collected by Mrs. E. A. Bush. Very closely allied to the above. 



25. C. UNIARISTATA, Torr. & Gray, Watson, 1. c. Spreading, and 

 more or less assurgent, 3-8 inches broad, densely hoary pubescent, 

 secondary branches forming zigzag lines, with obtuse angles at the 

 joints ; radical leaves oblanceolate, obtuse, tapering to a slender peti- 

 ole, densely pubescent ; cauline bracts narrow, recurved, and pungent ; 

 involucres rather copiously clustered along the branches ; tube short, 

 sharply ribbed, hairy-pubescent externally ; divisions 5-6 : one long 

 straight awn, longer than the tube, and four to five short recurved and 

 uncinate ; flowers short pedicellate ; perianth segments partly exsert, 



