OP THE WASATCH REGION 49 



1. M. saliva L. Lucerne. Alfalfa. A smooth, many-stemmed 

 perennial from a deep tap-root. Flowers in a loose raceme. 

 Legume coiled like a ram's horn. Cultivated. 



2. M. lupiilina L. Black Medick. Nonesuch. A pubescent 

 annual with flowers in short dense heads. Pods kidney-shaped; 

 1-seeded; black when ripe. Escaping from cultivation. Locally 

 called "Wild Yellow Clover." April-November. 



5. MELILOTUS. Sweet Clover. 



Annual or biennial herbs, fragrant in drying, with pin- 

 nately-compound leaves of 3-toothed leaflets. Inflorescence a 

 spike-like raceme. Flowers small; white or yellow; very 

 fragrant. Calyx 5-toothed. Petals deciduous. Stamens diadel- 

 phous. Legume ovoid; leathery; scarcely dehiscent; straight; 

 wrinkled. 



1. M. alba L. White Sweet Clover. Stems erect; 3-6 ft. high. 

 Leaflets truncate. Corolla white; the standard longer than the 

 other petals. Abundant along roadsides. May -October. 



6. ROBINIA. Black Locust. 



Shrubs or trees with odd-pinnate leaves of 9 or more sti- 

 pellate leaflets. Stipules often short, stout spines. Flowers 

 showy, in drooping, axillary racemes. Calyx short, very 

 slightly 2-lipped, the 2 teeth of the upper lip somewhat united. 

 Standard large, reflexed. Stamens diadelphous. Leg-ume flat, 

 straight. 



1. R. Pscmlo-Acacia L. A tree as much as 80 ft. high with 

 rough -barked trunk. Flowers very fragrant, in loose racemes. 

 Calyx often reddish. Corolla white, yellowish -veined. Legume 

 smooth. Cultivated. May-June. 



7. HEDYSARUM. 



Perennial herbs with showy flowers in racemes. Calyx 

 5-cleft. Keel longer than wings. Stamens diadelphous (9 

 and 1). Legume flat, jointed into several strongly-veined 1- 

 seeded roundish divisions, separating when ripe into loments. 



1. H. pabulare A. Nels. (H. utahense Rydb.) Many-stemmed 

 from a rootstalk. Stems 8-15 inches high, pubescent with short 

 and stiff appressed hairs. Leaflets 9-17, usually elliptic. 

 Bracts scarious; lanceolate to ovate. Calyx-teeth subulate, 

 with appressed pubescence. Corolla rose-purple, fading to 

 blue; the obovate standard conspicuously veined. Joints of 

 loment 3-5. Dry plains and hillsides. May-June. 4,500- 

 6,500 ft. 



8. ASTRAGALUS. Milk Vetch; Rattle weed; Loco Weed. 



Perennial herbs with odd-pinnate (or rarely simple) leaves. 

 Inflorescentf'e in spikes or racemes, often resembling- heads. 

 Flowers large, often showy. Calyx tubular, 5-toothed. Petals 



