326 COMPOSITiE. Baeria. 



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

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

 heads middle-sized or smaller. 

 ^- Some hirsute or strigulose pubescence, but no wooUiness : style-tips capitate, without any obvi- 

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

 paleai 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 ; this in type specimens of 3 or 4 awns from 

 small lanceolate paleaj. — Proc. Am. Acad ix. 14G, & xix. 21. BurrlvJid cjracilis, DC. Pr.jilr. 

 V. 664. B. hirsuta, Nutt. Trans. Am. I'hil. Soc. u. ser. vii. 381, a state destitute of pappus. 



Common iii W. California, especially. southward, and W. Arizona; variable. Extreme 



variations are 



Tax. aristosa, Gray, 1. c, with awns very gradually and slightly widened downward, 

 or in some flowers wanting. — Burrietia (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 Burrielia tenerrima, DC. Prodr. v. 664. 



Var. paleaoea, 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 palese awn- 

 less. — BiurieHa longifolia & B. parviflora, Nutt. 1. c. 

 B. curta Gray. Bracts and rays 8 or 10: pappus of 4 or 5 ovate or oblong pointless palese 

 (or rarely of a single one), ill length not e.xceediug the lireadth of the akene, or in .some 

 plants obsolete or wanting; leaves all filiformjiuear : heads 2 or 3 lines high and wide. — 

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

 Lemmon, 



^— -H- Glabrous except some fine deciduous woolliness : leaves and in volucral bract<i 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 Arm ovate or deltoid paleie 

 abruptly atteuuate-awned, about equalling the akene. 



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

 plaue : pappus-palese only 2, slender-awned. — Proc. Am. Acad. xix. 22. — Sau 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 paleoe. . — Bull. Torr. Club, x. 86. — Bay of 

 San Prancisco, 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-palese 5 to 7, slender-awned. — Proc. Am. Acad. ix. 196, xix. 22. Burrielia platt/rar- 

 pho, Gray, Bot. Mex. Bound. 97. — Lower Sacramento and Byron Springs, iSliUman, Greene. 



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

 muticous paleae alternating with awned ones or nailed 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. Dickceta, Nutt. Trans. Am. Phil. Soe. vii. 3!S:! ; Torr. & 

 Gray, 1. c. 



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

 lowest sparingly laciniate-toothed : head rather narrow ; involucral bnu-ts and short orbicu- 

 lar rays 6 or 8 : pappus <if 3 to 5 slender-subulate awns and at Ic.-i^t as many small .and 

 narrow laciniate squamellffi or pali';v. — Pine. ,\ni. ,\cad. ix. 19G. Burrielia marilima, Gray, 

 Proc. Am. Acad. vii. 3.58. — I'aralloues Islands, off Sau Fraucisco, G ruber. 



