284 BIGNONIAGEJE. (llIGXOXIA FAMILY.) 



palate hairy. — Stemless herbs. Loaves all radical, clustered, entire, \vith 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-eleft; spur subulate. — Open flat pine bar- 

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

 1 '- 1 ¥ wide, nodding. 



* * Flowers purple, often changing to white. 



2. P. elatior, Michx. Leaves clammy-pubescent, spatulatc-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, aeutish ; 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 obcordatc ; spur somewhat sac-like, obtuse. — Low sandy 

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

 G'hi:;h. Corolla h'-V wide. 



Order 89. BIGXOMACEiE. (Bignonta 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 and didynamous, inserted on the corolla: anther-cells diverg- 

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

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

 many-seeded. Embryo flat. Albumen none. 



Synopsis. 



Suborder L BIGNONIEiE. lYeea, shrubs, or woody vines. Cap- 

 Bule 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. i I '.' "M \. Valves of the capsule contrary to the partition. Learea compound. 

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



Suborder II. SKSAMK.E. Herbs. Capsule 4-eelled. Seedswing- 



( \.t\ ledons thick, entire. 

 \ MARTYNIAi Capsule woody, beaked. Li ives simple, alternate or opposite. 



