384 FLORA OF TEXAS. 



PIXGUICULA, Toiirn. Butterwort. 



Calyx 3-lobed on the upper lip, lower 2-lobed ; corolla 

 somewhat 2-lipped, the upper lip 2-lobed, the lower 3-lobed, 

 spurred at the base ; palate hairy ; leaves all radical, clustered, 

 entire, with the margins commonly involute; sca^e naked, 

 commonly viscid. Stemless herbs. 



* Floicers yellow. 



P. LUTEA. Corolla I'-IJ' wide, nodding, large, lobes 

 rounded, 2-4-cleft; spur subulate; leaves oblong-obovate ; 

 scape 6'-12' high ; plant yellowish, clammy pubescent. 



♦ Flowers purj)le, often changing to blue. 



P. PUMILA, Michx. Corolla-lobes obcordate ; spur some- 

 what saclike, obtuse; leaves roundish orobovate; scape 

 2-6' high ; corolla ^'-f ' wide. 



82. BIGNONIA FAMILY. Order, Bignol'iace^. 



Herbs, shrubs, or trees, with simple or compound leaves, 

 and regular or somewhat irregular showy flowers j calyx 

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

 bell-shaped, mostly 2-lipped ; fertile stamens 2, or 4 and 

 didynamous, inserted on the corolla; anther-coWs diverging; 

 ovary 2-celled, many-ovuled, the base surrounded Avith a 

 glandular disk; style filiform; stigma 2-lipped; capsule 

 2-valved, 2 or 4 celled, many-seeded ; embryo flat; albumen 

 none. 



SYNOPSIS. 



Sub-order I. Bignonieae. Trees, shrills, or xvoody 

 vines. Capsule 2-celled, the valves separating from the 

 partition. Seeds flat, winged. Cotyledons notched at each 

 end. Leaves opposite. 



Valves of the capsule parallel tcith the partitions. Leaves compound Broxoxix. 



contrary to the partitions. Leaves comjMund Tecoma. 



con trary to the partitions. Le a ves si mple — C a t alpa . 



