Seed Plants, Ferns, Fern Allies of the Austin Region 39 



Medicago arabica All. Bur Clover, Spotted Medic. 



Similar to the following species but with a dark spot near the 

 center of the leaflet. Occasional here. 



Introduced from Europe. Eastern states and California. 



Medicago hispida Gaertn. Bur Clover. Toothed Medic. 



Abundant everywhere in meadows and roadsides. University cam- 

 pus. The Medics are characterized by their spirally coiled pods. 



Introduced from Europe into the eastern states and California. 



Medicago sativa L. Alfalfa. 



Along railroad tracks and roadsides. 

 Naturalized from Europe. Extensively cultivated. 



Medicago orbicularis. 



Roadsides. An old-world species introduced. 



Meibomia. (Desmodium Wrightii Gray.) Sticktight. Tick Trefoil. 

 Flood plains. 

 Texas and New Mexico. 



Melilotus alba Desv. White Sweet Clover. 



A rather tall, upright, more or less branched weed with rather 

 conspicuous racemes of small white sweet-scented flowers. 



Melilotus indica All. Sweet Clover. 



Roadsides and waste places. Similar to the preceding except that 

 the flowers are yellow. 



Introduced from Europe. 



Oxyt'ropis Lambertii Pursh. (Aragallus in the old edition of Small.) 

 Found occasionally near Austin. 

 Plains states. 



Parosela aurea Britton. (Dalea aurea Nutt.) Prairie Clover. 

 Common on the dry hillsides of the Edwards Plateau. 

 Plains and prairie states. 



Parosela enneandra Brit. (Dalea laxiflora Pursh.) 

 Dry hillsides of the Edwards Plateau. 

 Prairie and plains states. 



Parosela frutescens Vail. (Dalea frutescens Gray.) 

 Dry hillsides of the Edwards Plateau. 

 Texas and New Mexico. 



