176 Procccdij'.i^s of the Ohio State Acadenix of Science 



Biynoniaceae. Trumpet-creeper I-'aniily. 



73. Catalpa Scop. Catalpa. 



Trees or shrubs with opposite or verticillate simple leaves 

 ar.d large white or mottled flowers in terminal panicles or 

 corymbs. Leaves with large nectar glands in the axils of the 

 veins on the under side. Capsule long and bean-like. 



1. Young twigs glabrous nr nearly so, leaf-blades downy below; flow- 

 ers large, white, with '1 yellow stripes inside and spotted purplish 

 brown. "2. 



1. Young twigs and petioles with long hairs: leaf blades glabrous be- 



low or nearly so, commonly 3-lobed or angled, strong-scented ; 

 flowers small, yellow with orange stripes inside and violet spots ; 

 capsule very slender. C. ovafa. 

 "2. Leaves strong-scented, young petioles glabrous or nearly so; wings 

 of seed usually narrowed at the ends; panicles many-flowered; 

 lower corolla lolie entire; hark thin, flaky. C. catalpa. 



2. Leaves not unpleasantly scented, young petioles usually pubescent, 



wings of seed usually broad, the threads parallel ; panicles few- 

 flowered ; lower corolla lobe emarginate ; bark thick and rough. 

 L^sually blooms a week or more earlier than C. catalpa. C. speci- 

 osa. 



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

 tree witli thin flaky bark and spreading branches. Wood much 

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

 produce irritation of the skin, (julf States. Escaped in the 

 northern states as far as ( )hio and X. Y. 



2. Catalpa speciosa Ward. Hard}- Catalpa. A large 

 rajMcl-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, furniture and 

 interior finish; also suitable for ];)aper pulp. 111. to Tenn., AIo., 

 Ark., and Ohio. 



'■■\ Catalpa oivta Don. Japan Catalpa. A small tree, com- 

 monl}- with 3-lobed or angled leaves. 



