358 THE LABIATE FAMILY. [Ballota. 



the south of Scotland, but usually as an escape from cultivation. Ft. 

 summer and autumn. It varies considerably in the precise form of the 

 teeth of the calyx, and in the length of their point. [B. alba, Linn., 

 is a stout form, with spinous spreading or reflexed tips of the calyx- 

 teeth.] 



XV LEONURUS. LEONURUS. 



Erect herbs, with leaves more or less lobed, and rather small flowers 

 in close axillary whorls, forming long, terminal, leafy spikes. Calyx 

 with 5 prominent ribs, and 5 equal, spreading, almost prickly teeth. 

 Corolla with a rather short tube ; the upper lip erect, concave, and 

 entire ; the lower spreading, and 3 -lobed. Stamens 4, in pairs. Nuts 

 flat, angular at the top. 



A small genus, containing a few European and Asiatic species, dif- 

 fering from Stachys chiefly in the shape of the nuts, which is the same 

 as in Lamium. 



1. L. Cardiaca, Linn. (fig. 809). Motherwort. — A tall, coarse, stiff, i 

 slightly hairy or downy perennial, 2 to 4 feet high. Leaves stalked, 

 the lower ones broad, deeply and irregularly cut into 5 or 7 coarsely 

 toothed lobes ; the floral leaves narrow, 5-lobed, or nearly entire, 

 their stalks as long as the flowers. Flowers 6 to 15 together, in 

 close axillary whorls, forming a long interrupted terminal, leafy 

 spike. Calyx-teeth almost prickly. Corolla pink or nearly white, 

 like that of a Stachys, with a rather short tube, and very hairy 

 upper lip. 



In waste places, hedges, on roadsides, &c, in Europe and central 

 and Russian Asia ; not extending, however, far to the northward. 

 Indicated in several parts of England, Scotland, and Ireland, but 

 with considerable doubts as to its being indigenous. Fl. end of 



XVI. LAMIUM. DEAD-NETTLE. 



Hairy herbs, either annual or perennial, decumbent at the base ; the 

 lower leaves always stalked, ovate or orbicular, and toothed ; the flowers 

 in close axillary whorls, or the upper ones in a leafy head. Calyx as 

 in Stachys. Corolla tube slender at the base, much enlarged at the 

 throat ; the upper lip erect or arched, slightly concave, entire or slightly 

 notched ; the lower spreading, with a broad middle lobe ; the two 

 lateral ones either smaller and pointed, or more often reduced to 

 a small tooth. Anthers hairy in all the British species except L. 

 Qaleobdolon. 



A genus of several species, chiefly south European or central Asiatic, 

 generally distinguished either by the long, arched upper lip, or by the 

 smallness of the lateral lobes of the lower lip of the corolla. 



Annuals, with small flowers, in few, nearly terminal, leafy 

 whorls. 



Floral leaves sessile, orbicular, obtusely crenate . . . 1. L. amplexicaule. 



Floral leaves shortly stalked, ovate, often pointed . . . 2. L. purpureum. 

 Perennials, with rather large flowers in axillary whorls. 



