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5. Q.aarironia Née. ¢: aments pendu- 
lous; abortive ovules apical; acorns maturing 
the first year; leaves persistent, coriaceous, not 
reticulate; nut acute.—Uommon. Spring. 
Tall tree, the genuine “live oak’’ of the 
Californians. 
6. Q. Wistizent DC. 4: aments pendu- 
lous; abortive ovules apical; acorns biennial; 
leaves persistent, coriaceous, reticulate, entire 
to sinuately lobed; petioles short; nut acute. 
Niles. Spring. 
Stately tree, frequently mistaken for “live 
oak.” 
7. Q. Kettogen Newb. 4: aments pen- 
dulous; abortive ovules apical; acorns biennial; 
leaves deciduous, pinnatifid-lobed; petioles 
long; nut obtuse.—Marin County. Spring. 
“Black Oak.’’ 
8. Q. pensIFLoRA Hook. & Arn. Aments 
erect, androgynous.— Marin County. Santa 
Cruz mountains. Summer. ‘‘Chestnut.” ‘‘Tan- 
ner’s bark.” 
2, Castanopsis Spach. CHINQUAPIN. 
Monecious, Aments slender, panicled ‘on 
the young shoots. 4 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 1-8 nuts en- 
