196 FOUXDATIDNS 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, upj^er 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 3-cleft. Stamens 4, reaching up under 

 the upper lip, with the tips of the filaments 2-toothed, only 

 one tooth anther-bearing. 



1. B. vulgaris, L. Self-heal, Heal-all, Carpenter-weed. 



Leaves with petioles, ovate-oblong, either entire or toothed, often 

 somewhat hairy. CoroUa usuaUy blue or bluish, somewhat longer 

 than the brown-pm-ple calyx. Open woods and fields everywhere. 



V. 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, npper 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. IIen-eit, Dead Nettle. An annual or 

 biennial weed. Leaves roundish, deeply scalloped, the lower ones 

 petioled, the upper sessile and clasi:)ing. Corolla sometimes f 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 ^-| 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 lip erect 



