SPECIES AND VARIETIES. 293 



M. arvensis : annual or biennial ; stem weak, a foot high ; 

 leaves oblong, acute, liairy ; flowers small, blue ; the corolla 

 with a short, concave limb ; calyx deeply cleft, the narrow 

 segments erect when in fruit. — Cultivated ground and bushy 

 places. Fl. June to August. 



ft Peduncles shorter than the calyx. 



M. collina : annual ; stems much branched, hairy, seldom 

 six inches high ; leaves in radical tufts, oblong obtuse ; flowers 

 ia slender racemes, the corolla very small, bright blue, with a 

 small, concave limb. — Dry, open places. Fl. May. 



M. versicolor is a little hairy annual, something like the 

 last, but with a more simple and erect stem, a spreading tuft 

 of radical leaves, and small nearly sessile flowers; the corolla 

 at first pale yellow, turning blue as it fades. 



(218) Cynoglossum. Hound's-tongue. 



C. oflB.cinale : biennial ; stem stout, erect, branched, about 

 two feet high, with rough hairs ; leaves lanceolate, or the 

 lowest ones oblong, the uppermost sessile and clasping the 

 stem, all hoary with dense soft appressed down ; racemes 

 numerous, mostly simple, forming a terminal leafy panicle, 

 the corolla small, dull purplish-red. — Roadsides and waste 

 places. Fl. June, July. 



(219) Salvia. Sage. 

 S. pratensis : leaves ovate, heart-shaped or oblong, coarsely 

 toothed, wrinkled; stem 1-14 feet high, downy, with a few 

 narrow leaves near its base ; flowers in a long, handsome, ter- 

 minal, almost simple whorled spike, the corolla near thrice as 

 long as the calyx, rich blue, with a long arched upper lip. — 

 Dry pastures, rare. Fl. July. 



