A FLORA IN NORTHERN OREGON 331 



Amsinckia intermedia Fisch. & Mey. Abundant in dry soil. 



Piptocalyx circumscissus (Hook. & Am.) Torr. Scarce, in dry 



ground. 

 Marrubium vulgare L. Frequent, in moderately dry ground. 



Lycopus lucidus Turcz. Common in wet ground along the 

 Umatilla. 



Mentha canadensis L. Abundant in wet ground. 



Verbascum thapsus L. Common in moderately dry ground 

 near the Umatilla. 



Verbascum blattaria L. Scarce, along the Umatilla. 



Pentstemon richardsonii Dougl. A remarkable and handsome 

 species, occurring in considerable quantities on moist basal- 

 tic outcroppings along the Umatilla. 



Ilysnathes dubia (L.) Bern. Scarce, along the Umatilla. 



Veronica peregrina L. Common in moist places. 



Veronica americana Schwein. Found sparingly along the Uma- 

 tilla. 

 Mimulus pilosus (Benth.) Wats. Frequent along the Umatilla. 

 Mimulus longsdorfii Donn. Very common in wet places. 



Mimulus floribundus Dougl. Frequent in wet ground along 

 the Umatilla. 



Verbena bracteosa Michx. Abundant in moderately dry ground, 

 especially along the Columbia. 



Verbena hastata L. Common in slightly damp ground, espe- 

 cially along the Columbia. 



Solatium dulcamare L. Frequent in thickets along the Uma- 

 tilla. 



Solanum nigrum L. Frequent along the Umatilla. 



Solanum triflorum Nutt. One of the very abundant and char- 

 acteristic species of the desert ; very generally distributed. 



Nicotiana attenuata Torr. Very common in rather dry ground. 



Orobanclie comosa Hook. Found in only one place; parasitic 

 on the roots of Tva axillaris. 



Plantago major L. Infrequent, along the Umatilla. 



