Hall Compositae of Southern California. 33 



Var. desertorum (Coville) Parish, in MS., comb. nov. B 

 desertorum Coville, Proc. Biol. Soc. Wash. vii. 68 (1892). Coleo- 

 santhus desertorum Coville, Contr. U. S. Nat. Herb. iv. 119 

 Q893). Smaller in all its parts: branches slender, becoming 

 glabrous in the second or third year, but still with a white epider- 

 mis, afterward gray : leaves only 16 mm. or less long even on vig- 

 orous shoots (mostly less than 1 cm.) : heads in glomerules ter- 

 minating short lateral branchlets : involucre 7 to 9 mm. high. 

 Between Banning and Seven Palms (Colorado Desert), Orcutt. 

 ace. to Coville; Inyo Co., ace. to Coville; Dos Cabesas, in the 

 southwestern part of the Colorado Desert, Orcutt, no. 1464 ; Riv- 

 erside, Zumbro, no. 362. Although from the coast side of the 

 mountains, Mr. Zumbro 's specimens answer very well for var. 

 desertorum except that the stems are of a dull white ; the heads 

 are in loose glomerules terminating lateral branchlets 1 to 3 cm. 

 long. 



B. MICROPHYLLA SCABRA Gray may reach our northeastern bor- 

 der. Certain specimens collected by Brandegee in the Providence 

 Mountains are probably of this species but they lack flowers. 

 Much like B.C. desertorum but outer bracts with greenish some- 

 what spreading tips, the outermost ones wholly herbaceous. 



7. B. Knappiana Drew, Pitt. i. 260 (1888). Coleosanthus 

 Knappianus Greene, Eryth. i. 54 (1893). 



A slender willow-like shrub, 2.5 m. or less high the ascending 

 branches with a smooth white bark which has a tendency to split 

 and become shreddy : branchlets and upper leaves hispidulous- 

 scabrous, somewhat glutinous : leaves alternate, ovate-lanceolate, 

 acute, narrowed to a distinct petiole, sharply and saliently toothed 

 or some of the upper ones entire, 3 to 4 cm. long : heads about 5- 

 flowered, in glomerules terminating lateral branchlets of the open 

 leafy panicle: involucre turbinate, about 7 mm. high; bracts 

 linear to oblong, obtuse, regularly imbricated, the quter success- 

 ively shorter, 3-nerved : achenes rather densely but minutely 

 appressed-setulose, indistinctly nerved. 



"In the neighborhood of the Mohave River, " Sept., 1888, 

 M. A. Knapp; Pleasant Canon, Panamint Mts., H all & Chand- 

 ler, no. 6919. Further collections may show that this is only a 



