Order 121.— GALE WORTS. 29? 



c Involucre a closed, inflated sac, one-flowered, many together in the pendu- 

 lous, hop-like cluster. Small trees, with very compact, strong timber, called 



Hop IJornheam. Iron-icood. Lever-wood. Os'tkta, 



c Involucie an open, 3-lobecJ leaf, l-flovvered. Small trees, with a strong, 



heavy timber. Hornbeam. Carpi'ncs. 



1. QUERCUS. Oak. 



§ Leaves mostly entire, the ends subequal, petioles very short No?. 1-4 



§ Leaves 3-lobed and dilated above, awnless when full-iciown. Fruit (2). . . Nos. 5, 6 



§ Leaves 3-9-lobed or pinnatifid, broad ; the lobes bnstle-imnted. Fruit (D (a) 



§ Leaves 5-9-l()bed, lobes-obtuse, never bristle-pointed. Fruit (Y), sessile 13-15 



§ Leaves 0-25-toothed, obovate, downy beneath, awnless. Acorn (i), sweet 16-17 



a Leaves at base cuneate, short-petiolcd, 3-5-lobed. Shrubs or small trees 7,8 



a Leaves at base abrupt or truncate, mostly long-petioled, 7-9-lobed (b) 



b Nut one-third immers.ed in the saucer-shaped, ftue-scaled cup 9, 10 



b Nut near half immersed in the hemispherical, coarss-scaled cup. . ..11-12 



1 Q. virens. Live Oak. Tree 40-5Uf., often smaller. Lvs. elliptic-oblong, obtuse, rarely 



with a few teeth. Peduncle longer than acorn. Timber excellent. Va. and S. 



2 Q. cine'rea. Upland Willoiv 0. Shrub 4-20r. Lvs. as in No. 1. Peduncle short. Va. andS. 



3 Q. imbrica'ria. Shirt gle 0. Laurel 0. (Fig. 33.) A handsome tree 40-50f., with dark, 



shiuiuL', lance-oblong, wavy leaves. Nut roundish, on a short peduncle. W. and S. 



4 Q. Phellos. Willow 0. Tree 38-60f. Lvs. linear-lanceolate, often !?ome teeth. N. J. and S. 



5 Q. aquat'ica. Water 0. Tree 20-40, handsome. Leaves . glabrous, acute at base. S. 



6 Q. nigra. Blackjack. Barren 0. Tree small (8-2."5f.), gnarled. Leaves rust- 

 downy beneath. Lobes obtuse, or in var. triloba with a few aiimed teeth. M. W. S. 



7Q. Oatesbae'i. Turkey 0. Tree 20-25f . Leaves large, narrowly and irregularly lobed. S. 

 8 Q. illicifo'lia. Sci^b 0. Shrub 4-7f. Lvs. regularly 5-lobed, white-downy beneath. 

 9 Q. rubra. Bed 0. (Fig. 2G7.) Tree 50-70f. Lvs. (not deeply) 7-9-lobed, dark-red 



in autumn. Cup 9-12" broad, nut 1', oblon^-ovoid. 

 10 Q. palus'tris. Pin, 0. Tree (i0-80f. Lvs. deeply .5-7-lobed, russet-brown in 

 autunm. Cup 5-7" broad, nut round-oval, 9" long. (Fig. 318, etc.) 



11 Q. falca'ta. Spanish O. Tree 60-70f. Lvs. ashy-pubescent beneath, lobes falcate. S. 



12 Q. cocci'nia. Scarlet 0. Tree verv large (SOf.). Lvs. much like No. 9, but turn 6ng'^^ 



red in autumn, glabrous, ofteu widening above. Nut half covered by the cup. 



13 Q. alba. White 0. (Fig. 32.) Tree 30-(;0f. or more, with light-colored bark. Lvs. 



sinuate-pinuatifid, lobes subequal. Nut i immersed. Timber excellent. 



14 Q. obtusi'loba. Post 0. Three upper lobes broader, 2-lobed. Nut| immersed. 



15 Q. macrocar'pa. Mo^s-ctip 0. (Fig. 34.) Lvs. deepest lobed in middle. Cup 



fringed, nearly enclosini; the globons nut. 



16 Q. bi'color. Swamp White 0. Lvs. whitened beneath. Acorns in pairs, long-stalked. 



17 Q. Prinus. Chestnut 0. Tree or shrub. Lvs. crenate or serrate. Nut subsessile. 



Order CXX. MYEICACE.E. Galeworts. 



Analysis of tJie Genera and Species. 

 § Leaves lance-linear, pinnatifid, fern-like. Fertile amenls globular. Ovary 

 surrounded by 6-8 long linear scales. Nut ovoid, smooth. A low 

 (2-3f.) bush with peculiarly fragrant leaves. Sweet Ffrn. Cotvipto'nia* 



13* 



