4i6 Muhlcnbergia, Volume 2 



RHAMNACEAE Dmnort. Buckthorn Family. 

 Rhamnus [Tourti j u Buckthorn. 

 Rhamnus Purshiana DC. Cascara Sagrada. In open 

 coniferous woods, head of JefTersoti street, Macleay Park, L- & C. 

 fair grounds, etc. April, May. Greenish. 



Ceanothus L. Mountain lilac. 



Ceanothus sanguineus Pursh. Woodland spray. Com- 

 mon in open woods and hillsides, South Portland, Fulton, Port- 

 land Heights, Cornell road, Mt. Tabor, Mt. Scott, etc. This 

 slender, graceful shrub has greatly increased in our limits as the 

 surroundhig forest has been cleared away. The foliage is rel- 

 ished by sheep. April, May. White. 



Ceanothus velutinus Dougl. Mountain balm. Occurs 

 sparingly about Rocky Butte and Montavilla. Commonly known 

 as ''.sticky laurel" by sheepmen and ranchers. The leaves are 

 glossy as if varnished and exude a viscid substance with a heavy, 

 spicy, balsamic odor that is unpleasant to most people. The 

 autumn flowers appear in September and early October. May to 

 October. White. 



Ceanothus laevigatus (T. & G.) Howell. Smooth moun- 

 tain balm. In open woods along Tualatin river. May, June. White. 



Ceanothus macrothyrsus (Torr.) Greene. Large false 

 lilac. (C californicus.) On rocky banks above Oregon City. 

 May, June. Pale blue to white. 



Ceanothus cuneatus (Hook.) Nutt. Buck brush, blue 

 brush. On rocky stream banks, Willamette river near Oswego. 

 April to June. White, rarely light blue. 



MALVACEAE Necker. Mallow Family. 

 Malva [Tourn.] L. Mallow. 

 Malva rotundifolia L. 1-2. Running mallow. Road- 

 sides, vacant lots and waste places, L. & C. fair grounds, Lower 

 Albina, Mt. Tabor, etc. Naturalized from Europe. Britton'- 

 Manual says flowers "pale blue;" Gray says "whitish;" HoweL 

 says "pale purple;" Jepson says "pale blue;" Nelson says "pale 

 blue or whitish;" Piper and Beattie say "pale blue." Itt ours 



