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5. Q. AGRIFOLIA Nee. $ : aments pendu- 

 lous; abortive ovules apical; acorns maturing 

 the first year; leaves persistent, coriaceous, not 

 reticulate; nut acute. Common. Spring. 



Tall tree, the genuine "live oak" of the 

 Californians. 



6. Q. WISLIZENI DC. $ : aments pendu- 

 lous; abortive ovules apical; acorns biennial; 

 leaves persistent, coriaceous, reticulate, entire 

 to sinuately lobed; petioles short; nut acute. 

 Mies. Spring. 



Stately tree, frequently mistaken for "live 

 oak." 



7. Q. KELLOGGII Newb. 3 : aments pen- 

 dulous; abortive ovules apical; acorns biennial; 

 leaves deciduous, pinnatifid-lobed; petioles 

 long; nut obtuse. Marin County. Spring. 

 "Black Oak." 



8. Q. DENSIFLOEA Hook. & Arn. Aments 

 erect, androgynous. Marin County. Santa 

 Cruz mountains. Summer. "Chestnut." "Tan- 

 ner's bark." 



2, Castanopsis Spach. CHINQUAPIN. 



Monoecious, Aments slender, panicled on 

 the young shoots. $ perigonium 5-lobed; 

 stamens 10. ? flowers 1-3, in a scaly invo- 

 lucre, sessile at the base of the ament; peri- 

 gonium 6-lobed, 2-seriate; fruit 1-3 nuts en- 



