316 " DICOTYLEDONOUS. 



5 Q Lattrifolia. A middle sized tree. Leaves sessile, oblong-lanceolate, 

 tapering at the base, entire, glabrous, the young leaves toothed and sometimes 

 sinuate. Acorn ovate, in a shallow, nearly sessile cup. 



h April. Rich, sandy soils. 40-50 ft. 



(ft) Leaves lobed at the summit. 



6 Q Aquatica. a small tree, with regular branches. Leaves obovate, 

 cuneatje, nearly sessile, obscurely lobed at fhe summit. Acorn ovate, rather 

 small, in a shallow cup, on a short peduncle. Water oak. 



T2 March— April. Damp soils. 30-70 ft. 



7 Q Nigra. A small free, with thick, rough, black bark. Leaves coria" 

 ceous, cuneare, dilated at the summit, retusely 3-lobed, 5-7 inches long, fer* 

 ruginous beneath Acorn ovate, mucronate, in rather a deep, sessile cup. 



% March — April. In poor soils. 15-30 ft. Blackjack. 



8 Q TiNCTOEiA. A large tree, with dark colored bark. Leaves obovate, 

 sinuate, mucronate, angled, glabrous on the upper surface. Acorn depressed, 

 in a deep, sessile cup. Black oak. 



T^ March — April. In rich uplands. 60-70 ft- 



9 Q CocciNEA. A large tree. Leaves deeply sinuate, glabrous, with the 

 lobes acute, notched and mucronate, petioles rather long. Fruit abundant. 

 Acorn oblong, mucronate, in a deep cnp. 



T^ April. In rich lands. 70-80 ft. 



10 Q Rubra. A large tree. ZeatTs glabrous, oblong, sinuate, with th^ 

 angles rather acute. Lohes acute and tapering, acutely notched, mucronate- 

 Acorn lareje, mucronate, in a fla', shallow^, sessile cup. Red oak. 



h April. Dry soils. 70-80 ft. 



11 Q CATESBiEi. A small tree, with stem and branches irregular and 

 crooked, heaves coriaceous, cuneate, sinuate, the lobes divaricate, usually 

 simple. Acorn ovate, in a large, deep cup, sessile, with the scales obtuse. 



p2 April. Poor, sandy soils. 15-30 ft. 



12 Q Falcata. a large, tree, with regularly expanding branches. Leaves 

 on long petioles, deeply lobed, falcate, mucronate, shining on the upper sur- 

 face, tomentose beneath. Fruit small, abundant, with a shallow cup. 



T7 April— May. Common. 70-80 ft. Spanish oak. 



Var. (a) Triloba. Leaves cuneate, nearly equally 3-lobed at the summit 

 mucronate. 



Var. (6) Paggd^folia. Leaves oblong, many lobed, on rather long peti- 

 oles, lobes simple, mucronate. 



13 Q Ilicifolia. A small shrub. Leaves cuneate, on long petioles, obo- 

 vate, 3-5-lobed, tomentose beneath. Fniit abundant. Acorn ovate, in a 

 shallow cup. 



T7 April — May. Poor soils. 3-8 ft. 



(6) Fructification annual. Leaves unowned. 



14 Q Obtusiloba. A middle sized tree, with irregular branches. Leave* 

 oblong, sinuate, on short petioles, generally 5-lobed, the upper ones dilated, 

 pubescent beneath. Acorn oblonsf, in a hemispherical cup. Post oak. 



T^ April. In stony, clay soils. 30-40 ft. 



15 Q Lyrata. a large tree. Leaves long, irregularly lyrate, the lobes ob- 

 long, nearly acute, the upper ones dilated, glabrous. Acorn nearly globular, 

 almost entirely enclosed in the cup. Over-cup oak. 



?2 April. Swamps. 60-70 ft. 



16 Q Alba. A large tree. Leaves oblong, pinnatifid, sinuate, pubescent 

 beneath, on short petioles. Lobes oblong, obtuse Fruit large, usually in 

 pairs. Acorn ovate, in a deep cup. White oak. 



T2 April. Rich soils. 70-80 ft. 



17 Q Prinus. a large tree, with a long trunk without branches. Leaves 

 large, obovate, or oblong-lanceolate, obtusely toothed, slightly pubescent be- 

 neath Fruit abundant. Acorn large, in a hemispherical cup. 



T7 April. Common. 70-80 ft. Swamp chestnut oak. 



