196 FOUNDATIONS OF BOTANY 
IV. BRUNELLA, Tourn. 
Perennials, with stems simple or nearly so, and sessile, 
3-flowered flower-clusters in the axils of kidney-shaped 
bracts, the whole forming a spike or head. Calyx tubular- 
bell-shaped, somewhat 10-ribbed, upper lip broad, 3-toothed, 
the teeth short, lower lip with 2 longer teeth. Upper lip of 
the corolla upright, arched, and entire, the lower spreading, 
reflexed, fringed, and 35-cleft. Stamens 4, reaching up under 
the upper lp, with the tips of the filaments 2-toothed, only 
one tooth anther-bearing. 
1. B. vulgaris, L. Srur-HEAL, HEAL-ALL, CARPENTER-WEED. 
Leaves with petioles, ovate-oblong, either entire or toothed, often 
somewhat hairy. Corolla usually blue or bluish, somewhat longer 
than the brown-purple calyx. Open woods and fields everywhere. 
Vv. LAMIUM, L. 
Annual or perennial hairy herbs. Calyx tubular-bell- 
shaped, 5-veined, with 5 awl-pointed teeth of nearly equal 
length. 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. Hen-pit, DeEAp Nettie. An annual or — 
biennial weed. Leaves roundish, deeply scalloped, the lower ones 
petioled, the upper sessile and clasping. Corolla sometimes 3 in. 
long, downy, rose-colored or purplish. Introduced from Europe; 
not uncommon about gardens and dooryards. 
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 3-2 in. long, purple (rarely white). 
Introduced 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 lp erect 
