ORDEH 121. GALE WORTS. 29 T 



o 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 Hornbeam. Iron-wood. Lever-wood. OS'TKYA. 



c Involucre an open, 3-lobed leaf, 1-flowered, Small trees, with a strong, 

 heavy timber. Hornbtam. CARFI'NCS. 



1. QUEKCUS. Oak. 



$ Leaves mostly entire, the ends subeqnal, petioles very short Nos. 1-4 



{ Leaves 3-lobed and dilated above, awnless when full-<rrown. Fruit... Nos. 5, 6 

 Leaves? 3-9-lobed or pinnatifid, broad ; the lobe? bristle-pointed. Fruit @....(a) 



Leave? 5-9-lobed, lobes obtuse, never bristle-pointed. Fruit , sessile 13-15 



$ Leaves 9-25-toothed, obovate, downy beneath, awnless. Acorn (I), sweet. 16-17 



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



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



b Nut one-third immersed in the saucer-shaped, fine-scaled cup.... 9, 10 

 b Nut near half immersed iu the hemispherical, coarse-scaled cup. ...11-12 



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



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



2 Q. cine'rea. Upland Willow 0. Shrub 4-201. Lvs. as in No. 1. Peduncle short. Va. and S. 



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



shinhiL', lance-oblong, wavy leaves. Nut roundish, on a short peduncle. W. andS. 



4 Q. Phellos. Willow 0. Tree 38-601". Lvs. linear-lanceolate, often some teeth. N. J. and S. 



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



6 Q. nigra. Blackjack. Barren O. Tree small (8-25f.), gnarled. Leaves rust- 

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



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



5 Q. illicifo'lia. Scrub O. Shrub 4-7f. Lvs. regularly 5-lobed, white-downy beneath. 



9Q. rnbra. lied 0. (Fig. 207.) Tree 50-70f. Lvs. (not deeply) 7-9-lobed, dark-red 



in autumn. Cnp 9-12" broad, nut 1', oblong-ovoid. 

 10 Q. palus'tris, Pin O. Tree 60-80f. Lvs. deeply 5-7-lobed, rusiet-brown in 



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



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



12 Q. cocci'nia. Scarlet 0. Tree verv lar^e (80f.). Lvs. much like No. 9, but turn bright- 



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



13 Q. alba. White O. (Fig. 32.) T.ree 30-fiOf. or more, with light-colored bark. Lvs. 



sintiate-pinnatiiid, lobes subeqnal. Nut | immersed. Timber excellent. 



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



15 Q. macrocar'pa. Moss-cup O. (Fig. 34.) LVP. deepest lobed in middle. Cup 



fringed, nearly enclosing the globous nut. 



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

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



ORDEK CXX. MYBIGAOK& Gale worts. 



Analysis of fhe Genera and Species. 



| Leaves lance-linear, pinnatifid, fern-like. Fertile aments globular. Ovary 

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

 (8-sr.) bn*n with peculiarly fragrant leaves. Sweet fe.rn. OoiT>T<Vin. 



13* 



