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smaller than the scales. Scales of the cone 

 persistent and elevated into a tumor (umbo). 

 It. Leaves 1-5, from a squarnous sheath. 



1. P. SABINIANA Dougl. Leaves in threes; 

 cones on a well developed peduncle; apophyses 

 of the scales stout, projecting. Napa Valley. 

 Spring. 



"Blue-pine." Seeds eaten by the Indians. 



2. P. INSIGNIS Dougl. Leaves in threes; 

 cones on short peduncles in clusters. Scales 

 toward the base enlarged, thick and hemis- 

 pherical. 2. Bolinas heights. Santa Cruz 

 mountains. Spring. 



" Monterey pine." Frequently cultivated. 



3. P. TUBERCUL ATA Gordon. Leaves in threes; 

 cones verticillate, peduncled; scales angular, 

 enlarged by a conical uinbo. Marin County. 

 Spring. 



4. P. MURICATA Don. Leaves in pairs- 

 Bolinas. Spring. 



2. Pseudotsuga Carriere. DOUGLAS SPKCTCK. 



Flowers from the axils of last year's leaves, 

 crowded; $ on elongated axes; scales of? flow- 

 er considerably smaller than the bracts, per- 

 sistent. Cones pendulous. ^ . Leaves dis_ 

 tichous, petioled. 



1. P. DOUGLASII Carr. Tamalpais. Santa 

 Cruz mountains. Spring. 



