CLASS XIV. ORDER II. 259 



posite, ovate-oblong, obtuse at base, tapering to an acute point, 

 serrate. Panicle erect, Avith opposite branches. Flowers small, 

 somewhat globular. Calyx teeth obtuse, appressed. Corolla 

 greenish outside, of a dark brown within, divided into five une- 

 qual, rounded segments, the shortest of which is reflexed. Sta- 

 mens declined. Style bending over the short segment of the 

 corolla. Between the two upper segments is a small, internal 

 prominence which may be mistaken for a fifth stamen, at the 

 base of which the honey is situated. Capsule globular, tipped 

 with a style. — Chelsea beach island. — August. — Perennial. 



277. 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 Snap dragon. — July. — August. — 

 Perennial. 



AntirrhinuxM 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. Upper 

 lip of the corolla reflexed, the lower much larger, spreading, 

 with a white centre and three roundish, blue lobes. Spur fili- 

 form, acute. Some leafy, procumbent scions occasionally pro- 

 ceed from the root. — Road sides. — July, August. 



