4o8 Muhlenbergia, Volume 2 



UlRX L Furze. 



Ulex europaeus L. Furze, gorse. Open woods, Willa- 

 mette Heights, Mountain View, Riverside, etc. Notwithstand- 

 ing the numerous spines, this species is relished by horses and 

 cattle. Introduced from Europe. Ftbruary to November Yellow. 

 Cytisus [Tourn.] L. Broom. 



Cytisus SCOPARIUS (L.) Link. Broom. Common on sandy 

 soil, rocky slopes and waste places, Mt. Tabor, Eist Portland 

 and along the Willamette river. Shunned by stock of all kinds 

 owing to its bitter taste. This shrub, at first hailed with de- 

 light for its bright yellow flowers, has of late years increased so 

 rapidly as to become a troublesome weed in some places. Nat- 

 uralized from Europe. April to July. Yellow. 



X Ononis arvensis h. Spiny rest-harrow. A recent im- 

 migrant here, but already established to some extent on road- 

 sides and waste place?, Willamette Heights, Blytheswood, etc. 

 Adventive from the Mediterranean region. May to July. 



Medicago [Tourn.] L. Medic. 



Medicago SATiVA L. 4. Alfalfa. Common on roadsides, 

 vacant lots and waste places about the city. Introduced from 

 Europe. May to July. Violet. 



Medicago lupui^ina L. i. Yellow trefoil. Not uncom- 

 mon in fields and waste places, J,. &. C. fair grounds, Mt. Tabor, 

 etc. Adventive from Europe. Aptil to July. Yellow. 



Medicago hispida Gaertn. i. Bur clover. (M. denticulata 

 Willd.) Infrequent in fields and waste places. Lower Albina, 

 etc. Adventive from Europe. May to July. Yellow. 



Melilotus [Tourn.] L. Melilot. 



Melilotus indica(L.) All. i. Yellow melilot. Infrequent 

 in vacant lots and waste places, Lower Albina, etc. Adventive 

 from Eurasia. May to July. Yellow, small. 



X Melilotus officinalis (L.) Lam. i. Yellow sweet clo- 

 ver. Infrequent, but gradually spreading on moist ground and 

 waste places. Lower Albina, South Portland, etc. Naturalized 

 from Europe. May to August. Yellow. 



Melilotus alba Desv. 2. White melilot. Not uncom- 



