CONTRIBUTIONS TO WESTERN BOTANY 125 
Tha color of flowers and juiciness of fruit are not reliable in 
describing species, nor is the shape of branches and number of 
spines and their color ,of vaiue, but the distance of areoles apart 
is significant. 
n March 3-4 in a trip to study cactus I fonnd none to speak 
of till 3) miles east of Barstow where some 0. echinocarps and 
fasciculata came in over a small area and disappeared till 11 miles 
rom Biker where they came in strong in a wash and prevailed to 
Mountain Pass and Yucca Grove where was very mach Cylindro- 
puntia wherever the yucca grew, elevation 3500-4000 ft. alt. The 
flat Opuntias came in at the pass, such as basilaris and much rho- 
dantha with 6-10 reddening joints, Above Wheaton spring was 
some chlorotica, 3-4 ft. high, on rocky slopes, also Mamillaria de- 
serti. 
Yucca brevifolia var. Wolfein. var. 
At Yucca Grove and Mountain Pass on the Arrowhead high- 
way are immense numbers of a yucca having small and oblong- 
ovate heads about 6 inches by a foot long, of flowers, which are 
sessile at the ends of the branches, the white flowers are 2 inches 
long, with the linear-lanceolate petals 2 mm. thick; stamens with 
globose anthers; odor carrion-like; leaves 4-6 inches long and very 
sharp-edged and short-pointed with a black spine, The stems 
are more slender than the type and haye many more slender 
branches and with trunks rarely 3 ft. through. Named for Mr. 
Wolfe of the Santa Ana ranch who first noted it. 
Hutchinsonia hyalina Jones proves to be a rayless form of Hymen- 
othrix Wislizeni which Blake has mistakenly named H. Morrisii. 
DICORIA T. & G. 
ignorant of Gree ae 
Mecon and Erig- 
botanists, or ignored by them, 
give an erroneous impression of the facts. 
