326 COMPOSITiE. Baeria. 



* * * Akenes more cuneate and broad at the summit, usually but not always pappose, more or 

 less 4-angular, not glandular, mostly canescent-hispidulous : receptacle conical or cylindraceous: 

 heads middle-sized or smaller. 



•i— Some hirsute or strigulose pubescence, but no woolliness : style-tips capitate, without any obvi- 

 ous apiculation : plants slender, a span to a foot higli according to situation and season : pappus- 

 pale« 1 to 5. 

 B. gracilis, Gray. Bracts and rays 10 to 12, when depauperate 5 or 6 : ligules 2 or 3 lines 

 long: akenes almost equalled by the pappus; tjjis in type specimeus of 3 or 4 awns from 

 small lanceolate palea}. — Proc. Am. Acad ix. 146, «Si xix. 21. Barrieliu (/racilis, DC. Prodr. 

 V. 664. B. hrrsuta, Nutt. Trans. Am. Phil. Soc. n. ser. vii. 381, a state destitute of pappus. 

 — Common iu W. California, especially southward, and W. Arizona: variable. Extreme 

 variations are 



Var. aristosa, Gkay, 1. c, with awns very gradually and slightly widened downward, 

 or in some flowers wanting. — Burrielia (jracilis, Hook. Bot. Mag. t. 3758. 



Var. tenerrima, with pappus-awns of the preceding, but usually fewer: depauperate 

 form : bracts and rays only 5 or 6. — Probably Burric/ia tenerrima, IJC. Prodr. v. 604. 



Var. paleacea, Gray, 1. c, with awns more or less abruptly dilated at base into a 

 conspicuous oval or ovate palea, occasionally wanting, rarely one or two of the paleae awn- 

 less. — Burrielia lon(/i/uliu & B. parrijlora, Nutt. 1. c. 

 B. CUrta, Gray. Bracts and rays 8 or 10: pappus of 4 or 5 ovate or oblong pointless paleae 

 (or rarely of a single one), in length not exceeding the breadth of the akene, or in some 

 plants obsolete or wanting : leaves all filiform-linear : heads 2 or 3 lines liigh and wide. — 

 Proc. Am. Acad. xix. 21. — Southeastern California, near San Bernardino, ]V. G. Wriylit, 

 Lemmon. 



+- ^— Glabrous except some fine deciduous woolliness: leaves and involucral bracts more or less 

 fleshy-thickened, heads about 4 lines high, many-flowered: style-tips ovate or capitate, and 

 with a conical or subulate apiculation or appendage: pappus of firm ovate or deltoid paleae 

 abruptly attenuate-awned, about ecpialling the akene. 

 B. Clevelandi, Gray. Leaves linear, a line wide, obtu.se, entire : involucral bracts 8 to 12, 

 plane ; pa])pus-paleae only 2, slender-awned. — Proc. Am. Acad. xix. 22. — San Diego, Cleve- 

 land. Too little known. 

 B. carnosa, Greene. Leaves filiform, entire : involucral bracts about 7, with a strong cari- 

 nate midrib : pappus of 4 or 5 subulate-awned paleas. — Bull. Torr. Club, x. 86. — Bay of 

 San Francisco, in salt marsh at Vallejo, Greene. 

 B. platycarpha, Gray. Leaves narrowly linear to filiform, some laciniate-pinnatifid : in- 

 volucral bracts 6 or 7, manifestly 3-nerved at base, middle nerve at length carinate-tiiickened : 

 pappus-paleae 5 to 7, slender-awned. — Proc. Am. Acad. ix. 196, xix. 22. Burrielia plati/rar- 

 pha. Gray, Bot. Mex. Bound. 97. — Lower Sacramento and Byron Springs, Still man, Greene. 



§ 2. DichJ;ta. Pappus of two forms both in ray and disk, i. e. of truncate or 

 muticous paleae alternating with awned ones or naked awns, or wanting in some 

 species : receptacle, &c., of § 1 : involucral bracts more obviously carinate-concave 

 in middle, the concavity partly embracing subtended akene, disposed to be decidu- 

 ous with it at maturity of the fruit : heads not large (3 or 4 lines high) : leaves 

 from entire to laciniate-pinnatifid in the same species. — Gray, Proc. Am. Acad, 

 ix. 196, & xix. 22. Dicheeta, Nutt. Trans. Am. Phil. Soc. vii. 383; Torr. & 

 Gray, 1. c. 



B. maritima, Gray. Low and diffuse, glabrate: leaves oblong-linear, inch long, entire, or 

 lowest sparingly laciniate-toothed : head rather narrow : involucral bracts and short orbicu- 

 lar ravs 6 or 8 : pappus of 3 to 5 slender-subulate awns and at least as many small and 

 narrow laciniate squamellae or palea3. — Proc. Am. Acad. ix. 196. Burrielia marilima. Gray, 

 Proc. Am. Acad. vii. 358. — Fai-allones Islands, off San Francisco, G ruber. 



