1919] Hall-Goodspeed : Ruhher in West American Shrubs 267 



and although it never forms pure stands of any great extent yet a 

 considerable supply could be assembled from some of the desert ranges. 

 The distribution of t( rctifolius is from the easterly slope of the Sierra 

 Nevada and Tehachapi mountains to central Nevada and possibly 

 Arizona. The largest stands we have seen are in the cafions on both 

 slopes of the White and Inyo ranges in eastern California ; there is 

 also a considerable quantity on the mountains to the west of Antelope 

 Yalley, California. 



Table 1 — ^Chemical Axalyses 



Chrysothamnus paniculatus (Gray) Hall. 



The plants of this species are on the average taller and less 

 spreading than C. tcretifoUus but they have a similarly glandular- 

 dotted foliage and the two are very close botauically. It grows on the 

 southerly part of the Mojave Desert and from Whitewater, on the 

 west side of the Colorado Desert, east to Arizona but it is nowhere 

 abundant. Six samples have been examined, with the following 

 results. 



Table 2 — Chemic.\l Analyses 



Place of Collection 



579 North of Barstow, Calif. 



580 North of Barstow, Calif. 



Date of 

 Collection 



Dec. 24, 1918 



-Acetone Benzene 



Extract Extract 



Per cent. Per cent. 



2.73 1.20^ 



Dec. 24, 1918 4.10 3.24^ 



Microscopical Ex.\mixatioxs 



Date of Estimated 



Place of Collection Collection Amount 



96 Cabazon, Calif. Jan. 22, 1918 Fair 



98 West of Whitewater, Calif. Jan. 22, 1918 Fair 



99 North side of San Jacinto Mountain, Calif. Jan. 22, 1918 Fair 

 581 North of Barstow, Calif. Dec. 24, 1918 Poor 



