28-i BIOKONIACEJB. (biCXOMA FAMILY.) 



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

 margins commonly involute. Scape naked, commonly viscid. 



* Floiccrs 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. Fcl>. -April. — Plant yellowish. Scape 6' - 1 2' high. Corolla 

 l'-lj'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, Xutt. Smoofhish; leaves lanceolate or oblong, flat ; co- 

 rolla 5-parted, the wedge-obovatc lobes 2-clcft, acutisb ; spur sac-like, obtuse. — 

 Shallow ponds, "West Florida, near the roast. March. — Scapes 1° high. Co- 

 rolla 1' wide. 



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

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

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

 6' high. Corolla V -%' wide. 



Order SO. BIGNONIACEiE. (Bignoxia Family.) 



Herbs, shrubs, or trees, witli 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-celled, many-ovuled ; the base surrounded with a glandular 

 disk. Style filiform: stigma 2-lipped. Capsule 2-valved, 2- or 1-eelled, 



many-seeded. Embryo flat. Albumen none. 



Synopsis. 



Suborder L BIGNQNTE2E. Trees, shrubs, or woody vines. Cap- 

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

 Cotyledons notched at each end.- Leaves opposite. 



1. BTONONIA. Velvet of the capsule parallel with the partition. Leaves compound. 

 % TBCOMA. Valves of the capsule contrary to the partition. Leaves compound. 

 .:. I \i\i.i'\. Valves ol the capsule contrary to the partition. Leaves simple. 



Suborder II. SESAMEJE. Herbs. Capsule 4-celled, Seeds wing 

 Cotyledons thick, entire. 



4 MAitTVN'i A. Capsnls w ly, beaked. L e a ves dmple, alternate or opposib 



