226 BIGNONIA FAMILY. 



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

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

 long' as lower lip. 



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



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

 yellow. 



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

 with several very small slender-pedicelled flowers. 



U. COrntlta. In bogs N. & S. ; 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, BUTTERWORT. (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. 

 ^-j?. pumila, in moist sand from Georgia IS. & W., has rather large flower 

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



P. elatior, borders of ponds from N. Carolina S., has scapes near 1 high, 

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



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

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



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



73. BIGNONIACE^I, BIGNONIA FAMILY. 



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

 diandrous or didynamous stamens (often 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 4 fertile stamens in ticn 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 placentce parietal : valves of pod 

 falling away from 1 lie partition : seeds with a broad thin trhi;/. 



2. BIG NO MI A. Calyx nearly truncate. Corolla tubular bell-shaped, 5-lobed. 



Pod flattened parallel with the valves and partition. Climbing by leaf- 

 tendrils. 



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



6-lobed. Pod' flatfish or flattened contrary to the partition, the edges of 

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

 The hardy species climb by rootlets. 



2. Trees, with simple leaves and 2 or rarely 4 fertile stamens. 



4. CATALPA. Calyx deeply 2-lipped. Corolla inflated bell-shaped, the 5-lobed 



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

 tin- partition contrary to the valves'. Narrow wings of the seed l:\cerate- 

 ( For <-<rrolla and stamens, see Lessons, p. 96, fig. 196.) 



