510 ORDER CXV. AMENTACEiE. 



mucronate. Acorn small, nearly spherical. — *> . May. In swamps. 

 30—60 feet. Willow Oak. 



2. Q. imbrica'ria, (Mich.) A small-sized tree, with irregular branches. 

 Leaves deciduous, oblong, tapering at each extremity, mucronate, en- 

 tire, pubescent beneath. Cup shallow ; scales broad-ovate. Acorn 

 small, nearly spherical. — ^ . June. Banks of rivers. Mountains. 

 40—50 feet. Shingle Oak. 



3. Q. pum'ila, (Walt.) A small shrub. Stem slender, virgate, spar- 

 ingly branched, tomentose when young. Leaves oblong-lanceolate ta- 

 pering toward the base, undulate, tomentose beneath. Acorns small, 

 in a shallow cup. — ^ . March — April. In pine woods. 2 — 3 feet. 



Running Oak. 



4. Q. vi'rens, (Ait.) A large tree, with spreading, irregular branches. 

 Leaves perennial, coriaceous, oval-lanceolate, with revolute margins, 

 pubescent beneath. Fruit oval, nearly black, generally in pairs. — ^. 

 April. Along the sea-coast. 40 — 50 feet. Live Oak. 



5. Q. laurifo'lia, (Mich.) A middle-sized tree. Leaves sessile, ob- 

 long-lanceolate, tapering at the base, entire, glabrous, the young leaves 

 toothed and sometimes sinuate. Acorn ovate, in a shallow, nearly ses- 

 sile cup. — ^ . April. Rich sandy soils. 40 — 50 feet. 



b. Leaves lobed at the summit. 



6. Q. aquat'ica, (Walt.) A small tree, with regular branches. Leaves 

 obovate, cuneate, nearly sessile, obscurely lobed at the summit. Acorn 

 ovate, rather small, in a shallow cup, on a short peduncle. — *? . March 

 — April. Damp soils. 30 — 70 feet. Water Oak. 



7. Q. ni'gra, (Willd.) A small tree, with thick, rough, black bark. 

 Leaves coriaceous, cuneate, dilated at the summit, retusely 3 lobed, 5 — 7 

 inches long, ferruginous beneath. Acorn ovate, mucronate, in rather a 

 deep, sessile cup. — If. March — April. In poor soils. 15 — 30 feet, 



Black-jack. 



8. Q, tinoto'ria, (Bart.) A large tree, with dark-colored bark. 

 Leaves ohovate, sinuate, mucronate, angled, glabrous on the upper sur- 

 face. Acorn depressed, in a deep, sessile cup. — ^ . March — April. In 

 rich uplands. 60 — 70 feet. Black Oak. 



9. Q. coocin'ea, (Van.) A large tree. Leaves deeply sinuate, gla- 

 brous, with the lobes acute, notched and mucronate, petioles rather long. 

 Fruit abundant. Acorn oblong, mucronate, in a deep cup. — ^ . April. 

 In rich lands. 70—80 feet. 



10. Q. ru'bra, (L.) A large tree. Leaves glabrous, oblong, sinuate, 

 with the angles rather acute. Lobes acute and tapering, acutely notched, 

 mucronate. Acorn large, mucronate, in a flat, shallow, sessile cup. — 

 ^ . April. Dry soils. 70—80 feet. Red Oak. 



11. Q. Cates'b^ei, (Mich.) A small tree, with stem and branches ir- 

 regular and crooked. Leaves coriaceous, cuneate, sinuate, the lobes di- 

 varicate, usually simple. Acorn ovate, in a large, deep cup, sessile, 

 with the scales obtuse. — ^. April. Poor sandy soils. 15 — 30 feet. 



12. Q. faloa'ta, (Mich.) A large tree, with regularly expanding 

 branches. Leaves on long petioles, deeply lobed, falcate, mucronate, 

 shining on the upper surface, tomentose beneath. Fruit small, abun- 

 dant, with a shallow cup. — ^. April — May. Common. 70 — 80 feet. 



Spanish Oak. 



