206 FOUNDATIONS OF BOTANY 



VIII. PEDICULARIS, Tourn. 



Perennial herbs, with the lower leaves pinnately cut and 

 the floral ones reduced to bracts. Flowers spiked. Corolla 

 markedly 2-lipped; the upper lip much flattened laterally and 

 arched, the lower lip spreading, 3-lobed. Stamens 4, beneath 

 the upper lip. Capsule 2-celled, tipped with an abrupt point, 

 several-seeded. 



1. P. canadensis, L. COMMON LOUSEWORT. Hairy, with clus- 

 tered simple stems, 1 ft. high or less. Leaves petioled, the lower- 

 most ones pinnately parted, the others somewhat pinnately cut ; spike 

 short, closely flowered and leafy-bracted ; calyx split down the front ; 

 corolla greenish-yellow and purplish, with its upper lip hood-like, 

 curved under, and with 2 awl-like teeth near the end ; capsule flat, 

 broadly sword-shaped. Knolls and openings among thickets. 



90. BIGNONIACE^E. BIGNONIA FAMILY. 



Trees or shrubs, often twining or climbing, rarely herbs. 

 Leaves usually opposite, without stipules. Flowers showy, 

 irregular. Corolla tubular, with a widened throat and a 

 5-lobed limb. Stamens usually 2 long and 2 short, or only 2. 

 Ovary free from the calyx, 2-celled or rarely 1-celled, with 

 many ovules. Fruit a capsule ; seeds large, winged. 



I. BIGNONIA, Tourn. 



Woody vines. Leaves opposite, compound, usually ten- 

 dril-bearing. Flowers large, in axillary clusters. Calyx 

 cup-shaped, truncate, or undulate-toothed. Corolla spreading- 

 tubular, somewhat 2-lipped, the lobes rounded. Stamens 4, 

 2 long and 2 short. Capsule linear, flattened parallel with 

 the partition, the two valves separating from the partition at 

 maturity. Seeds flat, broadly winged.* 



1. B. capreolata, L. CROSS-VINE. Stem climbing high, a trans- 

 verse section of the older stems showing a conspicuous cross formed 

 by the 4 medullary rays; branches smooth. Leaves evergreen, 

 petioled ; leaflets 2, ovate, taper-pointed with a blunt apex, heart- 

 shaped at the base, entire, stalked, upper leaflets transformed into 



