Trees of the Northern United States 125 



L Young twigs and petioles with long hairs ; leaf blades 

 glabrous below or nearly so, commonly 3-lobed or 

 angled, strong-scented, usually with 4 red oval glands 

 at the base of the blade ,on the upper side; flowers 

 small, yellow with orange stripes inside and violet 

 spots; capsule very slender. C. ovata. 



2. Bark thin, flaky ; young petioles glabrous or nearly so ; 

 wings of seed usually narrowed at the ends, panicle 

 many-flowered. C. catalpa. 



2. Bark thick and rough; young petioles usually pubes- 

 cent ; wings of seed usually broad, the threads parallel ; 

 panicle few-flowered. C. speciosa. 



1. Catalpa catalpa (L.) Karst. Common Catalpa. A 

 tree with thin flaky bark and spreading branches. Wood 

 brown, soft, weak, durable in contact with the soil, much less 

 valuable than that of C. speciosa. The flowers are said to 

 produce irritation of the skin. Gulf States. Escaped in the 

 northern states as far as Ohio and N. Y. 



2. Catalpa speciosa Ward. Hardy Catalpa. A large 

 rapid-growing tree with thick rough bark. Wood light, soft, 

 not strong, brittle, of very coarse texture and brown in color, 

 very durable in the ground; used for railroad ties, posts, fur- 

 niture and interior finish ; also suitable for paper pulp. 111. to 

 Tenn., Mo., Ark., and Ohio. 



3. Catalpa ovata Don. Japan Catalpa. x\ small tree, 

 commonly with 3-lobed or angled leaves. Flowers small. 

 From Japan. Often cultivated. 



Subclass, Inferae. 



Order, Umbellales. 



Araliaceae. Ginseng Family. 



78. Aralia F. Aralia. 



Our species small trees with alternate, bipinnate, decom- 

 pound, prickly leaves ; with prickly twigs ; and with about 20 

 bundle scars in the leaf scar. 



Flowers pentamerous tetracyclic, epigynous. in paniclcd 

 nml)els : fruit a small berrv. 



