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smaller than the scales. Scales of the cone 
persistent and elevated into a tumor (umbo).— 
2. Leaves 1-5, from a squamous sheath. 
1. P. Saprnrana 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. instants Dougl. Leaves in threes; 
cones on short peduncles in clusters. Scales 
toward the base enlarged, thick and hemis- 
pherical.—2f. Bolinas heights. Santa Cruz 
mountains. Spring. 
‘* Monterey pine.” Frequently cultivated. 
3. P. ruBpERcuLATA Gordon. Leaves in threes; 
cones verticillate, peduncled; scales angular, 
enlarged by a conical umbo.—Marin County. 
Spring. - 
4. P. murtcata Don. Leaves in pairs- 
Bolinas. Spring. 
2. Pseudotsuga Carriere. Dovetas Sprocr. 
Flowers from the axils of last year’s leaves, 
crowded; 6 on elongated axes; scales of 2 flow- 
er considerably smaller than the bracts, per- 
sistent. Cones pendulous.—}. Leaves dis. 
tichous, petioled. 
1. P. Dovetastt Carr.—Tamalpais. Santa 
Cruz mountains. Spring. 
