246 BIGNONIACEAE 



least as far as Tazewell County. The most northerly point 

 recorded for this shrub in Illinois is an island in the Illinois 

 River lying just north of the Mason-Tazewell county line. 



BIGNONIACEAE 

 The Trumpetcreeper Family 



The members of the trumpetcreeper family include trees, 

 shrubs, woody vines and some herbs with mostly opposite 

 leaves, which are simple or pinnately compound and lack stip- 

 ules. The large, showy flowers are perfect and irregular, the 

 calyx having 5 lobes arranged in 2 lips and the corolla being 

 likewise 5-lobed and more or less 2-lipped at the top of its 

 funnel-shaped tube. There are 5 stamens, 1 or 3 of which 

 usually are rudimentary or sterile, and the ovary is a 1 -celled, 

 compound pistil, which develops into a leathery or woody cap- 

 sule containing numerous winged seeds. 



The more than 500 species in this family, representing about 

 100 genera, are widely distributed in tropical regions, but a 

 few species grow in both the north and south temperate zones. 

 In Illinois, the common Catalpa tree is perhaps the family's 

 best known member. The following woody vines also occur in 

 the state. 



Key to the Shrubby Genera 



Leaf margins entire; vines with tendrils Bignonia, p. 246 



Leaf margins toothed; vines without tendrils Campsis, p. 248 



BIGNONIA (Tournefort) Linnaeus 

 The Trumpet-Flowers 



The trumpet-flowers are high-climbing, often evergreen vines, 

 which climb by means of tendrils and bear opposite, compound 

 leaves consisting of 2 leaflets, the rachis of which ends in a 

 branched tendril that clings by small disks. The flowers are 

 borne in axillary cymes. The calyx is 5-lobed, and the corolla 

 is bell shaped, with a 5-parted, slightly 2-lipped, spreading face. 

 There are 4 stamens, which are included within the corolla; 

 and the fruit is an elongated capsule flattened parallel with its 

 thin internal partition, which contains many small, winged seeds 

 arranged in 2 rows in each part of the capsule. 



There is but a single species in this genus. 



