86 



Descriptive Flora 



ously lobed or coarsely toothed. Pods globose but flattened, 

 larger and densely covered with short, fine, spreading hairs. 

 Petals without the orange at the base and broader, making the 

 flower appear larger across). Pedicels are usually more 

 spreading and many recurve in fruit as in Lesquerella recurvata. 

 March and April. In sand along railroad tracks and roadsides 

 south of San Antonio. Genus named for Lesquereux, an Ameri- 

 can botanist. 



Lesquerella engelmannn (A. Gray) S. Wats. 



Erect, greyish-white leafy plant, 8 to 18" tall, much 

 branched at the pale, thick, woody root and bearing small 

 yellow flowers similar to Lesquerella recurvata, only full twice 

 as large, (%" across) and forming a broader top. Leaf -blades 

 narrowly oblanceolate, entire, 1 to 2 1 / 4" long. Pods slightly 

 larger, and bearing a style as long as the body. Plants covered 

 with minute, scurfy scales that make it greyish all over. March 

 to June. On dry, limestone hills and hillsides. 



Radicula nasturtium-aquaticum (L) Britton and Rendle. 

 (Nasturtium officinale R. Br.) Watercress. "Berro" 



Deep green, pungent plants with floating or creeping root- 

 ing stems that spread rapidly in ditches, springs and shallow 

 water in streams. Leaves compound, alternate. Leaflets usually 

 three, the middle one largest and rounded. Flowers small, 

 white, similar to the bladder-pods and peppergrass in structure. 

 Pod about one-half inch long, strongly curved upward. Gathered 

 for salads. May also be cooked like spinach. Spring to fall. 

 Naturalized from Europe. Mr. G. Schmeltzer reports this is 

 good for relieving fever. 



Cheirinia arhanscma (Nutt.) Rydb. Wallflower. 



{Erysimum arhansanum Nutt) 



Tall, slender, swaying, ridged stems 1 to 3' high, topped with 

 light orange-yellow flowers and usually growing high on ledges 

 of limestone bluffs or on the slopes of ravines. Stems covered 



