Class XIV. Order II. 151 







187. ANTIRRHINUM. 

 ANTIRRHINUM LINARIA. L. Toad flax, 



Leaves linear-lanceolate, crowded; stem erect; 

 spikes terminal, sessile ; flowers imbricate. L. 



The yellow spikes of this plant are very common by road- 

 sides, though it is not probable, that the species is indigenous. 

 Stem one or two feet high, nearly smooth. Leaves numerous, 

 narrow, and pointed, smooth. Branches numerous, axillary, 

 bearing tufts of leaves. Spike long, crowded with yellow flow- 

 ers, the corolla furnished with a long, hollow spur below. The 

 mouth is closed with a protuberant palate from the under lip, 

 and gapes open upon lateral pressure, a character which has 

 given the genus the name of Snaji dragon.- July, August. 

 Perennial. 



ANTIRRHINUM CANADENSE. L. Canada Snap dragon. 



Leaves alternate, linear, remote, glabrous ; 

 flowers racemed ; stem simple, scions procumbent. 

 Willd. 



A slender, annual plant, seldom exceeding a foot in height. 

 Stem erect, smooth. Leaves small, scattered, erect, linear, ob- 

 tuse. Flowers in a loose, terminal raceme, small, blue. Up- 

 per lip of the corolla reflexed, the lower much larger, spread- 

 ing. Spur filiform, acute. Some leafy, procumbent scions 

 occasionally proceed from the root. Road sides. July, Au- 

 gust. 



188. PEDICULARIS. 

 PEDICULARIS CANADENSIS. L. Louse-ivort. 



Stem simple, spike somewhat leafy ; helmet of 

 the corolla with two setaceous teeth ; calyx trim 

 eated downward. L. 



