Ihhia. COM POSIT/!':. HTO 



Dry plains, coinmon from Santa Barliara s'huthward. Ilcails soniowhat (histpicd ; tlip invo- 

 lucre only 2 lines long, llaya f^cncrally S. The .st^ite with paiipus in tlie disk .i-s well jus ray was 

 collected by Prof. Brewer in the SantaMaria Valley, Santa Iftez Mountains, &c. 



* * Headi^ more or less pedunrled (ermuinfinrf the hrnnches, with G <o 8 rays : recep- 

 tacle obtmelij conical: anther-appendages ahrnpth/ tipped vnth a very slender 

 linear-Mtiform appendage {in the manner of Biirrielia) : jmppus both in disk and ray 

 0/ 8 or 1 chaffy scales. 



R. A. Wallace!, ('Vny, 1. c Donsoly clotliod witli \o\\<^ and very ilnr.coac 

 ■white wool, at lenj^'th ditrusely much branclinl, an \w\\ to a spaii hi-^h : leaves 

 obovate or spatulato, entire or (somewhat 3-lol)0(l at the apex : .scales of the invo- 

 lucre obtuse : pappus of 8 or 10 short and firm oval or oblong obtuse and pointless 

 nerveless scales. — Bahia Wallacei, Gray in Pacif. K. Kep. iv. 105; the form with 

 golden yellow ray as well as disk. 



Var. rubella, Gray : a form Avith pale purple an<l white rays. — Bahia rubella, 

 Gray in IJot. Mex. IJound. 95. 



Dry plains, from near Los Aiigoles aiid San Felipo, Wnllarc, Parr;i (the variety). Also on the 

 Colorado {<^«pt. Ilinlw),), niul tlio southern borders of Utah, Palmer, Si/rr. A.s yet a rare speeieM. 

 Style-branches tippi'd with a short subulate cone 1 Scales of the iiivolviero involute with age m 

 the manner of the genus. 



7. A. lanosa, Gray, 1. c. Loosely floccose-woolly, an inch to a span high, at 

 length dili'usely l)ranched : leaves linear, mostly entire : scales of the involucre 

 linear-oblong, rather acute : rays white or rose-color : akcnes slender : pappus of 4 

 or 5 subulate scales tapering into a slender scabrous awn, and as many alternating 

 oblong and awnless or pointless scales. — Burrielia (Dichata) lanosa, Gray in 

 Pacif. R. Hep. 1. c. 



Gravelly hills and plains, on the Colorado, near the Mohave, kc, Bifirlow, Coojyr. Also in 

 Arizona and S. Utah. Style-branches obtuse, or apiculate with a minute cusp. Scales of the 

 involucre almost condupli(;ately infolded at maturity, enclosing the akene. 



§ 3. Floccose-ivoolly, depressed, tvith mostl y alternate leaves: involucre narrow: rays 

 8 or 9, small: receptacle flat : al-enes linear, compressed, with callous margins 

 exceedingly villous : j^appus of 2 chaffy scales : anther-appendages oblong- 

 ovate. — Eatonet.la, Gray. 



8. A. nivea, Gmy, 1. c. An inch or ro high, in a Pmnll tuft from a Blonder 

 root, white with Hoft wool: Imvoa much crowded, obovate Hpiiliilnlf^ entire : \m\i\ 

 barely exscrted on a short naked peduncle : sc:des of the involucre linear-olilong, 

 acute, partly embracing the comparatively large akenes of the my : pappus of a 

 pair of broadly ovate conspicuous scales tapering into a slender short awn which 

 nearly equals the disk-corolla. — Burrielia nivea, D. C. Eaton in Watson, Bot. King 

 Exp. 174, t. 18. 



Foot-hills on the eastern side of the Sierra Nevada, IVnho.r. Vrry likely to orrur within Iho 

 State. A remarkable plant, evidently related to the foregoing, but it iniKht W regarded as the tyi>e 

 of a new genus. Head barely 3 lines long. Hays apparently either pale yellow or wlnte. Style- 

 appendnges very short and obtuse. Akenes almost 2 lines long, linear and slightly narrowed 

 downward ; the faces flat, smooth an<l shining, blackish ; a callous stu.ug rib to each margin, 

 which is .lensclv villous with very long and soft white haii-s : scales of the pappus answering to 

 the margins, the recepUcle is descnbed as convex : but it is flat in the specimen exaiinnc<l. 

 naked and scrobiculate. 



69. BAHIA, T>agasca. 



Head many-Howered, with 4 to 15 pistillate rays; nil the flowers fertile. In- 

 volucre a single or moro or less (hmble aeries of thin-herlmceous oval or iMiicoolato 

 appresaed equal scales, either piano or barely concave, not otnbracinp akenes, dis- 

 tinct, or united at base, or rarely for a greater length. ]?ec.-ptacle flat, convex, or 

 conical. Kays oval, obovate or oblong, entire, or barely toothed at the apex : disk- 



