226 BIGNONIA FAMILY. 



U. bifl6ra. Chiefly S. : steins 4' - 6' long, bearing rootlet-like leaves and 

 many bladders, 1 - 3-flowered peduncles 2' - 4' high, and awl-shaped spur as 

 long as lower lip. 



* * * Simple and erect naked scape-like stem rooting in wet soil, with minute and 



fugacious grass-like leaves seldom seen : commonly no bladders : Jloioers 

 yellow. 

 U. SUbul^ta, from N. Jersey S. in wet sand; very slender, 3' -5' high, 

 with several very small slender-pedicelled flowers. 



U. COrntlta. In bogs N. & y. ; 6'- 15' high, bearing 2-4 large flowers 

 crowded together on short pedicels, or S. with 4-12 more scattered and smaller 

 flowers. 



2. PINGUICULA, BuTTEKWORT. (Name from Latin, pinguis, fat. 



Both names from the fatty or greasy-looking leaves, which in ours are more 



or less clammy-pubescent.) 



* Corolla violet-purple ; the upper lip 2-lobed, lower 3-lobed. 



P. vulgaris," is scarce on wet rocks along our northern borders ; scape 2' 

 high ; upper lip of corolla short ; spur straightish and slender : fl. summer. 



P. ptimila, in moist sand from Georgia S. & W., has rather large flower 

 on scape 2' -6' high, with blunt sac-like spur: fl. spring. 



P. el^tior, borders of ponds from N. Carolina S., has scapes near 1° high, 

 and large corolla (1' wide) with blunt spur : fl. summer. 



* * Corolla yellow, more bell-shaped, less distinctly 2-lipped, the 5 lobes often cleft. 



P. Itltea. Wet pine barrens S. ; whole plant yellowish, with nodding 

 flower (1' or more wide) on scape 6' -12' high, in spring. 



73. BIGNONIACE-aS, BIGNONIA FAMILY. 



Woody plants, or a few lierbs, with more or less bilabiate flowers, 

 diandrous or didynamous stamens (oftea with rudiments of the 

 wanting ones), 2-lipped stigma, free variously 1 - 4-celled ovary, 

 and fruit, usually a pod, containing many large mostly flat and 

 winged seeds, filled with the large embryo : no albumen. 



I. BIGNONIA FAMILY proper ; almost all woody plants, 

 with opposite leaves, 1-2-celled pods, and flat winged seeds. (Les- 

 sons, p. 135, fig. 316.) 



§ 1. Climbers, with compound leaves and ^fertile stamens in two pairs. 

 * Barely woody or herbaceous : ovary and pod one-celled with 2 parietal placentae. 



1. ECCREMOCARPUS. Calyx 5-cleft. short. Corolla tubular, with 5 short and 



round recurved lobes. Pod short. Seeds winged all round. 



« « Woody-stemmed : ovary and pod 2-celled, but the plncentce parietal : valves of pod 

 falling away from the partition : seeds with a broad thin wing. 



2. BIGNONIA. Caly.x nearly truncate. Corolla tubular bell-shaped, 5-lobed. 



Pod flattened parallel w"ith the valves and partition. Climbing by leaf- 

 tendrils. 



3. TECOMA. Calyx 5-toothed. Coi-olla funnel-shaped, tubular, or bell-shaped, 



5-lobed. Pod flattisli or flattened contrary to the partition, the edges of 

 which separate tV.im the middle of the valves. Leaves in ours odd-pinnate. 

 The hardy species climb by rootlets. 



§ 2. Trees, toiih simple leaves and 2 or rarely i fertile stamens. 



4. CAT ALP A. Calyx deeply 2-lipped. Corolla inflated bell-shaped, the 5-lobed 



border more or less 2-lipped and wavy. Pod very long and slender, hanging; 

 the partition contrary to the valves. Narrow wings of the seed lacerate- 

 fringed. (For corolla and stamens, see Lessons, p. 95, fig. 196.) 



