DICOTYLEDONS. 215 



upper lip 2-lobed, the lower 3-lobed and saccate or spurred at 

 the base, palate hairy ; capsule 2- or 4-valved. 



1. P. LUTEA Walt. Yellow Marsh Violet. Leaves viscid- 

 pubescent, yellowish-green, oblong-obovate, acute, coarsely cellular 

 and very watery; scape 6-1*2 in. high; flower 1-1|^ in. wide, bright 

 yellow, nodding ; spur slender, half the length of the rouiuied lobes 

 of the corolla. February-April. Marshes in pine barrens. 



2. r. ELATioR Michx. Purple Marsh Violet. Leaves ovate 

 to spatulate, acute, coarsely cellular and watery, clammy-pubescent ; 

 scape villous near the base, slender, 8-12 in. high ; calyx glandular ; 

 corolla purple or blue, 1 in. wide, the rouuded lobes very unequal, 

 the spur obtuse. March-April. Wet, sandy soil. 



Hi. BIGNONIACEJE. lUCJXOXLV FAMILY. 



Trees, shrubs or woody vines ; leaves simple or compound, 

 opposite or alternate, exstipulate ; flowers showy, in termi- 

 nal or axillary clusters, perfect, somewhat irregular ; calyx 

 2-lipped and 5-lobed, or truncate and entire ; corolla funnel- 

 form or tubular, 2-lipped, 5-lobed ; stamens 2 or 4 and didyn- 

 amous, inserted in the tube of the corolla ; ovary 2-celled, 

 many-ovuled, style slender, stigma 2-lobed ; fruit a 2-valved, 

 2- or 4-celled, many-seeded capsule. 



I. BIGNONIA. 



Woody vines; leaves opposite, com])ound, usually tendril- 

 bearing ; flowers large, in axillary clusters ; calyx cup-shaped, 

 truncate or undulate-toothed ; corolla si)reading-tubular, some- 

 what 2-li])ped, the lobes rounded; stamens 4, didynamous; 

 capsule linear, flattened ])arallel witli the jjartition, the 2 

 valvt's se{)arating from the partition at maturity ; seeds flat, 

 broadly winged. 



B. CRrci(;Ei{A L. Cross-vine. Stem clinihing high, a trans- 

 verse section of the older stems showing a conspicuous cross fornu'd 

 by the 4 medullary rays; branches glabrous; leaves evergreen, 

 jx'tioled ; leaflets 2, ovate, acuminate with a blunt apex, cordate at 

 tiie base, entire, stalked, upper l(»aflets transformed into branching 

 tendrils; flowers numerous, short-peduncled ; corolla 2 in. long, 



