MONOPETALOUS EXOGENOUS PLANTS. 385 



Sub-order. Sessameae. Herbs. Caj^sule 4-celled. 

 Seeds wingless. Cotyledons thick, entire. 



Capsule woody, beaked. Leaves simple, alternate, or opposite Marttnia, 



BIGNOJS'IA, Tourn. Cross-vine. 



Cali/x cup-shaped, truncate or slightly 5-toothed ; corolla 

 tubular-bell-shaped, 5-lobed; fertile stamens 4, didyna- 

 mous ; anthers smooth ; valves of the capsule flattened par- 

 allel with the partition, and separating from it at maturity; 

 seeds flat, winged. — Climbing woody vines j leaves opposite, 

 compound. 



B. CAPREOLATA, L. Leaves evergreen ; the short petiole 

 terminated by 2 cordate-oblong entire stalked leaflets, with 

 a branched tendril between ; 2)edicels clustered, axillary, 

 elongated. Ste?n climbing high ; leaflets 3-6' long ; corolla 

 2' long, red without, yellow within ; capsule J° long. 



TECOMA, Juss. Trumpet-flower. 



Cali/x bell-shaped, 5-toothed ; corolla funnel-shaped, 

 5-lobed ; fertile stamens 4, didynamous ; valves of the cap- 

 sule convex, contrary to the partition ; seeds winged. — 

 Shrubs or woody vines; leaves opposite, compound, decidu- 

 ous. 



T. RADICANS, Juss. Stem climbing by rootlets ; leaves 

 pinnate, more or less pubescent; leaflets 9-11, ovate or 

 ovate-lanceolate, acute or acuminate, serrate ; racemes ter- 

 minal, few-flowered (Bignonia radicans, L.) ; corolla 2'-3' 

 long, scarlet without, yellow within ; capsule 4-5' long. 



CATALPA, Scop. 



Calyx 2-lipped ; corolla bell-shaped, somewhat 2-lipped, 

 5-lobed ; fertile stamens 2 ; valves of the cylindrical capsule 

 contrary to the partition ; seeds flat, with fimbriate wings. 

 — Small trees ; leaves simple, opposite ; flowers in terminal 

 panicles. 



C. BiGNONioiDES, Walt. Leaves large, cordate, entire or 



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