15. Leaves rounded at base; acorn V^-Vz inch long; 



Georgia, Florida, Alabama, and Arkansas 



Q. arkansana Sarg., Arkansas Oak 



15. Leaves wedge-shaped at base; acorn Yi-Vz inch long 



Q. nigra, Water Oak, p. 203. 



Willow Oaks (Eastern Species) 



1. Leaves mostly linear-lanceolate, glabrous to woolly below; acorn 



Vi-Vl inch long, green-brown Q. phellos, Willow Oak, p. 203. 



1. Leaves mostly oblong-lanceolate to oblong-obovate. 



2. Leaves white woolly below; North Carolina to Florida and 



Texas Q. incana, Bluejack Oak, p. 205. 



2. Leaves glabrous to hairy below. 



3. Leaves hairy below; acorn dark chestnut-brown, Vi-V^ 

 inch long Q. imbricaria, Shingle Oak, p. 205. 



3. Leaves essentially glabrous below; acorn nearly black, Yi 

 inch long. 



4. Leaves elliptical to oblong-ovate, nearly evergreen 



Q. laurifolia, Laurel Oak, p. 205. 



4. Leaves variable, spatulate to obovate to linear, sometimes 

 lobed, deciduous Q. nigra, Water Oak, p. 203. 



Live Oaks 



1. Southeastern Live Oaks. 



2. Shell of nut glabrous on inside, acorn maturing in 1 year, on 



long stalks; leaves 2-5 inches long 



Q. virginiana, Live Oak, p. 207. 



2. Shell of nut woolly on inside, acorn maturing in 2 years, short- 

 stalked; leaves V2-2 inches long; So. Carolina to Florida and 

 Miss Q. myrtifolia Willd., Myrtle Oak 



1. Western Live Oaks. 



3. California Live Oaks. 



4. Shell of nut glabrous on inside, acorn maturing in 1 year. 



5. Leaves about % inch long; usually a shrub; through 

 California Q. dumosa Nutt., California Scrub Oak 



5. Leaves 1-3 inches long; southwestern California 



Q. engelmannii Greene, Engelmann Oak 



4 Shell of nut woolly on inside, acorn maturing in 2 years 

 (except California Live Oak). 



6. Acorn Y^-lVi inches long, narrow; more than Vi covered 

 by thin cup Q. wislizenii, Interior Live Oak, p. 211. 



6. Acorn less than Vi covered by cup. 



7. Acorn %.-lV2 inches long, narrow; leaves glabrous to 



hairy below. . Q. agrifolia, California Live Oak, p. 211. 



7. Acorn V2 -2 inches long, oblong to ovoid ; leaves woolly 



below. 



8. Leaves oblong-lanceolate; restricted to islands off 



coast of southern California 



Q. tomentella Engelm, Island Live Oak 



8. Leaves oblong-ovate ; Washington to California and 

 Arizona. . .Q. chrysolepis, Canyon Live Oak, p. 213. 



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