214 MISC. PUBLICATION 42 3, U. S. DEPT. OF AGRICULTURE 



long, in a raceme; sepals and petals, except the lip, similar, spreading, 

 brown-striate ; lip obovate, not saccate, longitudinally several-crested, 

 slightly 3-lobed. 



1. Hexalectris spicata (Walt.) Barnhart, Torreya 4: 121. 1904. 



Arethusa spicata Walt., Fl. Carol. 222. 1788. 

 Corallorrhiza arizonica S. Wats., Amer. Acad. Arts and Sci. 

 Proc. 17: 379. 1882. 



Santa Rita Mountains, Pima County (Pringle 353, the type of C. 

 arizonica, Thornber in 1903), rich soil in woods among rocks, June 

 and July. Virginia to Missouri, Florida, Texas, and Arizona. 



Crested-coralroot. The plant resembles a large-flowered Coral- 

 lorrhiza. The flowers, as observed in the southeastern United States, 

 have a delicious odor of violets. 



21. SAURURACEAE. Lizardtail family 



1. ANEMOPSIS. Yerba-mansa 



Plant herbaceous, perennial ; leaves mostly basal, large, somewhat 

 fleshy, cordate at base ; inflorescence a dense cylindric spike, subtended 

 by large white petallike bracts; flowers perfect, very numerous, small, 

 without a perianth. 



1. Anemopsis californica (Nutt.) Hook, and Arn., Bot. Beechey Voy. 



390. 1841. 



Anemia californica Nutt., Ann. Nat. Hist. 1:136. 1838. 



Yavapai County, Cochise to Yuma Counties, 2,000 to 5,500 feet, 

 wet saline soil, May to August. Western Texas to Utah, Arizona, 

 and California, southward into Mexico. 



The Arizona form is var. subglabra Kelso. The inflorescence with 

 its white bracts suggests the single flower of an Anemone. An infusion 

 of the root was used by Californians of Spanish descent and by the 

 Pima Indians as a remedy for various ailments. 



22. SALICACEAE. Willow family 



Trees or large shrubs, dioecious ; leaves deciduous, alternate, simple; 

 flowers of both sexes in catkins, appearing before or with the leaves; 

 ovary 1-celled; stigmas 2 to 4 ; seeds minute, subtended by silky hairs. 



Key to the genera 



1. Winter buds covered by several scales; scales of the catkins laciniate or fim- 

 briate; flowers borne on broad or cup-shaped disks; stigmas elongate, the 

 lobes slender or dilated 1. Populus. 



1. Winter buds covered by one scale; scales of the catkins entire or merely dentate; 

 flowers without disks ; stigmas short 2. S alix. 



1. POPULUS. 28 Cottonwood, poplar 



Trees, with more or less resinous buds; leaves mostly long-petioled, 

 the blades mostly deltoid or ovate, sometimes lanceolate; stipules 

 minute, fungacious; catkins long and drooping; stamens numerous. 



28 Reference: Sudworth, George B. poplars, principal tree willows, and walnuts of the rocky 

 mountain region. U. S. Dept. Agr. Tech. Bui. 420. 1934. 



