24 CONTRIBUTIONS TO WESTERN BOTANY No. 17 
Brodiaea capitata var. pauciflora Torr. Aquila, Arizona, April 4, 
1930; Lordsburg, N. M., April 9, 1930. 
Yucca macrocarpa Eng. Bot. Gaz. 6 224 1881. Plain near mouth of 
Ramsey Canon, Arizona, April 6, 1930. This is practically Samuela fax- 
oniana Trel. 
Yucca Schottii Eng. Ramsey Canon, Arizona, April 6, 1930. Leaves 
Yucca caniliculata Hook. This is Samuela Carnerosana Trel. Y. Trecu- 
liana Carr. Sierra Blanca, Tex., April 11, 1930. A form nearer true canal- 
iculata also from Sierra Blanca, April 11, 1930. A form about the same as 
Samuela Faxoniana from Indian Hot Springs, April 29, 1930. An inter- 
mediate form from Colossal Cave, Arizona, May 6, 1930. Also another 
form from east of Lordsburg, N. M., May 6, 1930. 
Yucca rupicola Scheele. Devil’s river, Texas, April 26, 1930. 
In going east from the Needles, California, along the highway, I had 
a chance to make more notes on Yucca. Near Hackberry, which is near the 
upper limit of the Tropical, Yucca Mohavensis disappeared quite suddenly 
and Y. baccata came in strong and continues strong to the lower limit of the 
Middle Temperate near Williams, where it quit off suddenly and Y. angus- 
tissima came in and continued nearly to Williams. In its zone Y. Mohay- 
ensis rarely reaches 15 feet in height and had few stolons, and was in full 
fruit (June 15) and some pods being full sized. The fruit is spreading, 
or rarely fully pendent. It is rounded at the end and apiculate and about 
four inches long normally, though very often only two inches long and much 
stung by insects. When not stung there is no constriction in or near the 
very common north o oy and continues nearly to the Needles, and is 
less common on the Arizona side to Hackberry. Some stemless forms simu- 
late baccata in the blueness of the leaves. 
the other hand Yucca baccata is conspicuously caespitose with sev- 
eral stolons which very rarely have any trunk at all, though cases occur 
e 
deeper channeled, and narrower normally. The panicle is linear, much 
fewer flowered, rarely oblonceolate, two feet long. The pods are conspicu- 
ously acuminate, about four inches long by two wide, and mostly pendent. 
