354 THE LABIATE FAMILY. [Melittis. 



spreading, and 3-lobed. Stamens 4, in pairs, projecting slightly from 

 the tube. M. grandiflora, Sm. 



In woods and shady places, in temperate and southern Europe and 

 western Asia, not extending into northern Germany. In Britain, con- 

 fined to a few localities in southern and south-western England. FL 

 summer. 



XI. MARRUBIUM. HOREHOUND. 



Perennial herbs, usually cottony or woolly, with much wrinkled leaves 

 and rather small flowers in axillary whorls or clusters. Calyx with 5 or 

 10 ribs, and as many equal pointed teeth. Corolla with a short tube ; 

 the upper lip erect, usually notched ; the lower lip spreading and 3- 

 lobed. Stamens 4, included within the tube of the corolla, all the 

 anthers 2-celled. Nuts rounded at the top. 



A rather numerous genus in southern Europe and western Asia, 

 readily distinguished amongst British Labiatce by the included stamens, 

 and in that respect allied to the extensive south European genus 

 Sideritis, which, however, has different anthers. 



1. M. vulgare, Linn. (fig. 799). White H.— Stem rather thick, a 

 foot and a half high, with spreading branches, thickly covered with a 

 white cottony wool. Leaves stalked, orbicular, soft, and much wrinkled. 

 Flowers in dense whorls or clusters in the axils of the upper leaves, 

 small, of a dirty white. Calyx with 10 small, hooked teeth. Upper 

 lip of the corolla narrow, erect, and 2-cleft. 



On roadsides and waste places, in temperate and southern Europe 

 and central and Russian Asia, extending northwards into Scandinavia, 

 and now naturalised in several parts of America and other countries. 

 Not a common plant in England or Ireland, and still more rare in 

 Scotland ; although found in abundance at particular localities. [It 

 is a doubtful native, except in the Isle of Wight.] Fl. summer and 

 autumn. 



XII. STACHYS. STACHYS. 



Rather coarse, hairy herbs (or, in some exotic species, low shrubs), 

 with the leaves often cordate, and flowers, in the British species, in 

 whorls of 6 or more, forming terminal racemes, spikes, or heads. Calyx 

 5- or 10- ribbed, with 5 nearly equal, erect or spreading, pointed teeth. 

 Corolla with the upper lip erect, concave, and entire ; the lower lip 

 longer, spreading, 3-lobed, the lateral lobes often reflexed. Stamens 4, 

 in pairs under the upper lip. Nuts smooth, rounded at the top. 



A numerous genus, spread over nearly the whole world, but within 

 the tropics limited to mountain districts. 



Erect perennials, 1 to 3 feet high. 

 Plant thickly covered with a white silky wool. Flowers nume- 

 rous, in crowded whorls 2. S. germanica. 



Plant green, more or less hairy. 

 Flowers many in each whorl, forming a close, oblong, terminal 



spike. Leaves mostly radical 1. S. Betonica. 



Flowers 6 to 10 in each whorl, forming a long, loose, terminal 

 spike. Stem leafy. 



