February 15, 1917 403 



COMARUM L. Marsh cinqnefoil. 



COMARUM PALUSTRE L. 4. Marsh cinqnefoil. In marshy 

 ponds, Sauvie's island. May to July. Dark purple. 

 Drymocallis Fourr. Cinqnefoil. 



Drymocallis glandulosa (Lindl.) Rydb. 4. Glandular 

 cinqnefoil. {Potentilla glandulosa.) Open woods, Oswego, Mil- 

 waukie, etc. May, June. Yellow. 



Potentilla L. Cinqnefoil, 5ve-finger. 



Potentilla rivalis Nutt. 1-2. Slender cinqnefoil. In- 

 frequent in moist places around Portland. May to July. Yellow, 

 small. 



Potentilla millegrana Engelm. 1-2. Branched cinque 

 foil. Infrequent on sandy banks, Willamette river near Port- 

 land. May to July. Yellow, 



Potentilla gracilis Dougl. 4. Western five-finger. In 

 glades near Unnton, Mt. Scott, etc. May to July. Yellow. 



Argentina Lam. Silverweed. 

 Argentina Anserina (L.) Rydb. 4. Silverweed. Infre- 

 quent on stream banks, Willamette river near Portland. The 

 roots were formerly eaten by the Indians. April to Aug. Yellow. 



RUBUS [Tourn. ] L. Blackberry, raspberry. 



RUBUS PARVIFLORUS Nutt. Red thimble berry. Common 

 in open woods, Macleay Park, South Portland, Logie trail, etc. 

 April to June. White. 



RUBUS SPECTABILIS Pursh. Salmon berry. Common in 

 moist woods and stream banks, Balch cretk, Ross island, St. 

 Helens road, etc. The fruit of this species in the immediate vi- 

 cinity of Portland is usually dull yellow, but occasionally red. 

 Two miles east of Cazadero, however, a form occurs that has 

 black fruit when fully ripe. April to June. Red. 



RuBUS LEUCODERMIS Dougl. Western black-cap. Com- 

 mon in open woods, Macleay Park, Canyon road, Cornell road, 

 etc. April, May. White. 



RuBUS URSINUS C. & S. Wild blackberry. Very common 

 in coniferous woods everywhere around Portland. It also can 



