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Descriptive Flora 



Vicia leavenwortltii Torr. & Gray. Vetch. Pea Vine. 



Vines climbing by tendrils. Leaves once pinnately com- 

 pound with a forked tendril at end. Leaflets 10 to 14. Flowers 

 small, bonnet-shaped, delicate purple or lavender, in loose 

 clusters of 3 to 8 at the ends of long, slender axillary stalks. 

 Upper petal pale blue marked with darker veins. Lateral petals 

 white, 2 inner petals short and united so as to inclose the stamens 

 and pistil. Pods 6 or 7-seeded, flat, less than 1 inch long. Feb- 

 ruary to July. This little vine enriches the soil wherever it takes 

 root, through the nitrogen-gathering bacteria that make their 

 home in little nodules on the roots. Widespread, growing equally 

 well on rocky ravines and rich creek bottoms. 



Vicia texana (Torr. & Gray) Small. 



Plant similar to Vicia leavenwortltii but the plant is much 

 larger in every way. Stems angled and grooved. Leaflets 8 to 

 16, larger, over y 2 " long (usually an inch), flowers larger {y 2 

 long or nearly so, always over y±). 



Latltyrus pusillus Ell. Vetchling 



A low-growing annual with flattened, 2-winged stems and 

 alternate, pinnately compound leaves ending in a tendrij. and 

 with 2 leaflike stipules at the base. Leaflets 2, opposite each 

 other, 3-veined, y 2 to 2" long. Flowers small, pea-shaped, violet, 

 1 or 2 at the ends of axillary peduncles. Pods flat, y 2 to iy 2 " 

 long. Rare. March and April. 



Zornia bracteata (Walt.) Gmel. Zornia. 

 (Zornia tetrapTtylla Michx.) 



Perennial with long, slender, branched, spreading stems, 1 to 

 3' long, 4-foliate leaves, and yellow, bonnet-shaped flowers. 

 Leaves palmately compound. Leaflets usually 4, entire, finely 

 gland-dotted, elliptic, lanceolate or linear. Flowers yellow, 3 to 

 9, in axillary conspicuously bracted racemes. Bracts leaf-like, 

 about %" long, elliptic or oval, folded against each other in pairs. 



