284 BIGNONIACE^E. (BIGNONIA FAMILY.) 



palate hairy. Stemless herbs. Leaves all radical, clustered, entire, with the 

 margins commonly involute. Scape naked, commonly viscid. 



* Flowers yellow. 



1. P. lutea, "Walt. Clammy-pubescent ; leaves oblong-obovate ; corolla 

 large, with the rounded lobes 2 - 4-cleft ; spur subulate. Open flat pine bar- 

 rens, common. Feb. -April. Plant yellowish. Scape 6'- 12' high. Corolla 

 l'-l^'wide, nodding. .- 



* * Flowers purple^ often changing to white. 



2. P. elatior, Michx. Leaves clammy-pubescent, spatulate-ovate ; scapes 

 villous near the base ; lobes of the corolla 2-cleft, rounded ; spur obtuse. Mar- 

 gins of ponds, Florida to North Carolina. March and April. Scapes 8' -12' 

 high. Corolla 1' wide. 



3. P. australis, Nutt. Smoothish ; leaves lanceolate or oblong, flat ; co- 

 rolla 5-parted, the wedge-obovate lobes 2-cleft, acutish ; spur sac-like, obtuse. 

 Shallow ponds, West Florida, near the coast. March. Scapes 1 high. Co- 

 rolla 1' wide. 



4. P. pumila, Michx. Clammy-pubescent ; leaves roundish or obovate ; 

 lobes of the corolla obcordate ; spur somewhat sac-like, obtuse. Low sandy 

 pine barrens, Georgia, Florida, and westward. March and April. Scape 2 ; - 

 6' high. Corolla ' - 1' wide. 



ORDER 89. BIGNONIACE^E. (BIGNONIA FAMILY.) 



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

 somewhat irregular showy flowers. Calyx 2-lipped, 5-lobed, or truncate 

 and entire. Corolla tubular or bell-shaped, mostly 2-lipped. Fertile sta- 

 mens 2, or 4 ancl didynamous, inserted on the corolla : anther-cells diverg- 

 ing. Ovary 2-celled, many-ovuled ; the base surrounded with a glandular 

 disk. Style filiform: stigma 2-lipped. Capsule 2-valved, 2- or 4-celled, 

 many-seeded. Embryo flat. Albumen none. 



Synopsis. 



SUBORDER I. BIGNONIEJL Trees, shrubs, or woody vines. Cap- 

 sule 2-celled, the valves separating from the partition. Seeds flat, winged. 

 Cotyledons notched at each end. Leaves opposite. 



1. BIGNONIA. Valves of the capsule parallel with the partition. Leaves compound. 



2. TECOMA. Valves of the capsule contrary to the partition. Leaves compound. 



3. CATALPA. Valves of the capsule contrary to the partition. Leaves simple. 



SUBORDER II. SESAMES. Herbs. Capsule 4-celled. Seeds wing- 

 less. Cotyledons thick, entire. 



4. MARTYNIA. Capsule woody, beaked. Leaves simple, alternate or opposite. 



