62 DAVENroRT ACADEMY OF NATURAL SCIENCES. 



unequal, the outer spathulate entire, the inner one half smaller, crenate ; 

 stamens 9, anthers oblong ; styles and akene similar to the above ; 

 embryo i line long, with narrow cotyledons and slender radicle. 

 Habitat: Arid districts south of Monterey ; Palmer, 1877. 



26. C. Clevelandi, n. sp. Sparingly branched at base, more or 

 less assurgent, 2-10 inches broad, hairy pubescent ; radical leaves 

 ovate-spathulate, obtuse, tapering below into a slender petiole ; upper 

 cauline bracts narrow and pungent, becoming acicular in the terminal 

 involucral clusters ; involucres triangular, hairy-pubescent externally ; 

 tube contracted at the throat ; divisions 6 : three longer, slightly une- 

 qual, divergent, and three smaller, intermediate, all shortly uncinate ; 

 flowers short pedicellate, tube oblong, perianth shortly cleft ; outer 

 segments broadly ovate, erose, and shortly emarginate, inner narrow 

 and laciniate, mostly covered by the over-lapping outer segments ; 

 stamens 3, at the base, anthers orbicular ; styles as long as the trian- 

 gular akene, partly exsert ; embryo yVz hnes long, with slender, oblong 

 cotyledons and short radicle. 



Habitat: Allen Springs, Lake county, June, 1882, D. Cleveland. 

 Ukiah, Mendocino county, August 14th, 1882, C. G. Pringle. Mrs. 

 K. Curran, Grisley Canon, Lake county, 1883. A very distinct spe- 

 cies, which I take pleasure in dedicating to its first discoverer, D. 

 Cleveland, Esq., of San Diego. 



* * * * Slender, erect or decumbent, branching from the base, with tumid, 

 fragile joints, perianth included, segments equal, in one case {C. Lastarriu-a) obso- 

 lete! stamens 3-6. 



27. C. coMMisuRALis, Rcmy., D. C. Prod., Vol. XIV., p. 26. Slen- 

 der, sparingly branched above, hairy-pubescent ; radical leaves narrowly 

 ovate, lanose-pubescent, a short foliaceous whorl on the main stem, 

 cauline bracts setaceous; involucres sparsely scattered on the upper 

 branches, tube cylindric, evenly costate, showing an inconspicuous pro- 

 tuberance at the base (as noticed by Mr. Sereno Watson), the connect- 

 ing membrane of the tube prolonged above as a loose fold at the throat ; 

 flowers pedicellate, short cleft; perianth segments equal, oblong; sta- 

 mens 6, anthers oblong; styles recurved, as long as the ovary; embryo 

 with narrow cotyledons, and slender radicle. 



Habitat: Chili, South America. Described from specimens in Cal- 

 ifornia Acad. Herb. 



28. C. BREvicoRNU, Torr., Watson, 1. c. Erect or ascending, 3-6 



