12 FAGACEAE. 



Fruit maturing the second year, except sometimes in Q. myrti- 



folia: nut pubescent within : leaf-blades bristle-tipped. III. LAUKIFOLIAE. 



I. ALBAE. 



Leaf-blades deeply and prominently lobed. 1. Q. Margaretta. 



Leaf-blades undulate or undulately lobed. 2. 0. Chapmanii. 



II. VIRGINIANAE. 

 Acorn-nut of an ovoid type, much less than one-half included in 



the cup. 



Stems underground; branches erect. 3. Q. minima. 



Stems erect. 



Leaves and twigs not succulent : nut well included in the cup. 4. Q. geminata. 

 Leaves and twigs succulent : nut very slightly included in 



the cup. 5. Q. succulenta. 



Acorn-nut of an oblong type, one-half included in the cup. 6. Q. Rolfsii. 



III. LAURIFOLIA. 



Stems underground ; branches erect. 7. Q. pumila. 

 Stems erect. 



Leaf-blades glabrous beneath. 8. Q. myrtifolia. 



Leaf-blades pubescent beneath. 0. Q. cinerea. 



1. Q. Margaretta Ashe. Shrub, or tree sometimes 10 m. tall: leaf -blades oval 

 or obovate in outline, 6-9 cm. long, more or less pubescent about the veins 

 beneath, sinuate or shallowly 3-5-lobed: acorn sessile or short-stalked; cup 

 turbinate-hemispheric, 11-14 mm. wide; nut oblong to ovoid-oblong, 12-14 

 mm. long. SMALL POST-OAK. 



Dry sandy woods, n. Fla. (Cont.) 



2. Q. Chapmanii Sarg. Shrub, or tree becoming 10 m. tall: leaf -blades obo- 

 vate or oblong, 5-10 cm. long, 3-lobed near the apex, or merely undulate, 

 sparingly pubescent beneath, lustrous above: acorn sessile or nearly so; cup 

 depressed-hemispheric, 15-20 mm. wide; nut oblong-elliptic, 1.5-2.5 mm. long. 

 CHAPMAN 'S-OAK. 



Sandy soil, especially near the coast, n. Fla. and the upper pen. (Cont.) 



3. Q. minima (Sarg.) Small. Shrub, with underground stems, the branches 

 less than 1 m. tall: leaf -blades obovate or sometimes oblong or oblanceolate 

 in outline, 3-10 cm. long, glabrous or finely pubescent beneath, repand-toothed 

 or those of the upper leaves sometimes entire: acorns solitary or several on a 

 peduncle; cup hemispheric, about 15 mm. wide; nut ovoid or elliptic, 15-18 

 mm. long. SCRUB-OAK. DWARF LIVE-OAK. 



Pinelands, chiefly near the coast, nearly throughout Fla., except the F. Keys. 

 (Endemic.) 



4. Q. geminata Small. Shrub, or tree 10 m. tall: leaf -blades narrowly oblong, 

 elliptic, or oblong-oblanceolate, 3-6 cm. long, entire, revolute, rugose-reticu- 

 late, finely tomentose beneath: acorns usually 2 at the end of a stalk: cup 

 turbinate, about 10 mm. wide; nut ovoid or narrowly oval, 10-17 mm. long. 

 TWIN LIVE-OAK. SCRUB LIVE-OAK. 



Sandy hammocks and sand-ridges, n. pen. Fla. (Cont.) 



5. Q. succulenta Small. Shrub, mostly about 1m. tall, with soft spreading 

 branches : leaf-blades broadly linear to cuneate, fleshy-leathery, 2-4.5 cm. long, 

 entire or with 3-5 slightly spinescent lobe-like teeth, smooth and glabrous 

 above, tomentulose beneath: acorns peduncled; cup saucer-shaped, 3-4 mm. 

 high, 5-6 mm. broad; nut oblong-conic, 1-1.3 cm. long, only the very vase 

 included in the cup. 



Pinelands, s. pen. Fla. (Endemic.) 



6. Q. Rolfsii Small. Eigid shrub, or small tree 7 m. tall: leaf -blades cuneate 

 in outline, leathery, 2.5-6 cm. long, mostly 3-lobed at the apex, or sometimes 

 5-lobed, bright-green, glabrous and finely reticulate above, pale and thinly 

 stellate-pubescent beneath: acorns usually in pairs at the ends of short 

 peduncles: cup hemispheric above a stout base, about 1.5 cm. broad; nut 



