KEY. 189 



450. Placentae parietal. Corolla scarcely 2-lipped, 2-3 

 inches long. Pods elongated. Seeds winged. Leaves com- 

 pound. Woody vines 460 



Placentae central 461 



400. Leaves pinnately 5- to 11-foliolate. Corolla 2-3 

 inches long. Plant climbing by rootlets. 



(333) Tecoma radicans, Juss. 

 Leaves of 2 ovate, or oblong leaflets, with a branch- 

 ed tendril between. Corolla hell-shaped, 5-lobed, and slight- 

 ly 2-lipped, orange-colored, 2 inches long. 



Bignonia capreolata, L. 



461. Corolla with a spur or sac at the base, the throat 

 with a palate. Pod opening by chinks or holes. Flowers in 

 simple racemes, or axillary. Lower leaves usually opposite, 



or whorled 462 



Corolla not spurred, nor saccate 463 



463. Corolla spurred at the base ; the palate rarely clos- 

 ing the throat. Flowers yellow and large, or blue, purplish, 

 and smaller ; either racemed or scattered. Leaves either all 

 or only the upper ones alternate, linear, lanceolate, ovate, or 

 halberd-shaped. Xiinaria. 



Corolla merely saccate at the base, the palate clos- 

 ing the throat. Flowers purplish, in loosely flowered spikes. 

 Sepals longer than the corolla. Leaves lance-linear. 



Antirrhinum Orontium, L. 



463. Calyx conspicuously 2-lobed or lipped, the lobes or 

 lips entire, or incised ; or calyx cleft in front 464 



Calyx 4- or 5-toothed, cleft or parted 467 



464. Calyx-tube 10-ribbed, oblique, the posterior of its 

 5 teeth much smallest, the two anterior united much higher, 

 than the rest. Stem 2 feet high, pubescent, simple. Leaves 

 sessile, lanceolate-ovate, or oblong, 3-nerved, with ciliate 

 edges. Flowers dull purple, or brownish-yellow, in elongat- 

 ed spikes. Sch-walbea Americana, L. 



Calyx not 10-ribbed 465 



465. Upper lip of the corolla linear, very long, arched 

 and keeled, lower short, 3-lobed; tube included in the calyx. 

 Anther-cells unequal, the outer fixed by the middle, the in- 



