212 KEY AND FLORA 
Corolla with dilated throat, upper lip arched, middle lobe of 
the lower lip notched, the lateral lobes small, close to the 
throat of the corolla. Stamens 4, rising beneath the upper lip. 
1. L. amplexicaule L. Hensit, Deap Netrie. An annual or 
biennial weed. eaves roundish, deeply scalloped, the lower ones 
petioled, the upper sessile and clasping. Corolla sometimes % in. 
long, downy, rose-colored or purplish. Not uncommon about gardens 
and dooryards. Naturalized from Europe. 
2. L. purpureum L. Stem 6-18 in. high, silky-hairy or nearly 
smooth, reclining below, branched from the base. Leaves long-peti- 
oled, obtuse, heart-shaped, scalloped. Whorls of flowers mostly 
terminal, crowded. Corolla }-} in. long, purple (rarely white). Nat- 
uralized from Europe. 
VI. LEONURUS L. 
Erect herbs. Leaves lobed. Whorls of flowers axillary, 
densely flowered, scattered; bractlets awl-shaped; flowers 
small, pink or white. Calyx 5-nerved, top-shaped, with 5 
rather spiny, spreading teeth. Corolla with upper lip erect 
and entire, lower 3-cleft. Stamens 4; anthers joined in pairs. 
Nutlets with 3 projecting angles, their sides channeled. 
1. L. cardiaca L. Mornerwort. Stem 2-4 ft. high, prominently 
angled, stiff, stout, upright, very leafy. Leaves palmately lobed or 
cleft; basal ones long-petioled; lower stem leaves many-cleft, the 
‘upper ones 3-cleft, prominently nerved, the divisions acute. Corolla 
% in. long, pale rose color, the upper lip and outside of the tube 
densely soft-bearded. Common about dooryards and fence rows. 
Naturalized from Europe. 
VII. STACHYS L. 
Herbs, rarely shrubs. Leaves scalloped or serrate. Whorls 
of flowers 2 or more flowered, usually in terminal racemes. 
Calyx nearly bell-shaped, 5-toothed. Corolla tube cylindrical, 
usually with a ring of hairs inside, not dilated at the throat; 
upper lip erect or spreading; lower spreading, 3-lobed, the 
middle lobe largest. Stamens 4, the 2 lower longest. 
1. S. palustris L. Perennial; stem erect, 4-angled, 2-3 ft. high, 
hairy, especially on the angles, with projecting or reflexed hairs, 
leafy. Stem leaves short-petioled or sessile, ovate-lanceolate or ob- 
long-lanceolate, scalloped-serrate, coarsely or finely downy, roundish 
