TREES AND SHRUBS 



37 



Leaves broader, 1 to 2 inches wide, narrowly 

 lanceolate, tipped with a very stiff rigid 

 spine; filaments usually coarse and thick 

 (slender or none in T. schottiU, grayish or 

 brownish; fruit lndehiscent, more or less 

 fleshy. 

 Stem short, 6 inches high or less; perianth 

 segments narrowly lanceolate, 2 to 3 

 Inches long, creamy white within, reddish 

 outside; fruit large, 5 to 6 Inches long, 

 pulpy. 

 Stem taller, 3 to 10 feet or even more, oc- 

 casionally branched; perianth segments 

 elliptic, hardly 2 inches long, cream- 

 colored, usually not although sometimes 

 reddish outside; fruit smaller, 4 Inches 

 long or less, not so pulpy. 

 Leaves rigid, rough like shagreen, yellow- 

 ish green, not glaucous; filaments coarse 

 and grayish. 

 Leaves flexible, smooth, blue-green, glauc- 

 ous; filaments when present fine, usual- 

 ly brownish. 



4. Y. baccata. 



5. Y. macrocarpa. 



6. Y. schottU. 



DASYLIRION. Sotol. 



Dioecious perennials with thick, short stems, numerous strap- 

 shaped spiny-margined leaves, and numerous small, white flowers 

 borne in a tall, narrow panicle. The bases of the leaves form a 

 round head (when the ends have been cut off) which is used ex- 

 tensively in stock feeding in western Texas. These heads are roasted 

 by the native people and used for food and for the manufacture 

 of a drink, also called sotol, which contains from 40 to 50% of 

 alcohol. 



A single species or possibly two in New Mexico. 1. D. wheeleri. 



NO LIN A Michx. Bear Grass. 



A single species mostly In the southwestern 

 part of the state. 



1. N. microcarpa. 



