326 COMPOSITE. Baeria. 



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

 less 4-aiigular, not glandular, mostly canescent-hispidulous : receptacle conical or c^'lindraceous : 

 heads middle-sized or smaller, 



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

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

 paleaB 1 to 5. 



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



lono;: akeues almost equalled by the pappus; this iu type specimens of 3 or 4 awns from 



small lanceolate paleaj. — Proc. Am. Acad ix. 196, & xix. 21. Burrielia gracilis, DC. Prodr. 



V. 664. B. Iiirsuta, 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, Gray, 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 G. — Probably Burrielia tenerrima, DC. Prodr. v. 604. 



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



conspicuous oval or t)vate palea, occasionally wanting, rarely one or two of the palciB awu- 



less. — Burrielia luiv/i/olia & B. parvijlora, Nutt. 1. c. 

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



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



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



Proc. Am. Acad. xix. 21. —Southeastern California, near San Bernardino, W. G. Wright, 



Lemmon. 



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

 tieshy-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 paleaB 

 abruptly attenuatc-awned, about equalling tlie akene. 



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

 plane : pa]ipus-palea; only 2, sleuder-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- 

 uate midrib : pappus of 4 or 5 subulate-awned paleaj. — 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-thickened : 

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

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



§ 2. Dicii^TA. Pappus of two forms both in ray and disk, i. e. of truncate or 

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

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

 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-pinnatilid in the same species. — Gray, Proc. Am. Acad, 

 ix. 19G, & xix. 22. DichcEta, 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 laciuiate squamelljE or paleiB. — Proc. Am. Acad. ix. 196. Burrielia maritima, Gray, 

 Proc. Am. Acad. vii. 358. — Farallones Islands, off San Francisco, Grubcr. 



