250 DIDYNAMIA GYMNOSPERMIA. [CL. XIV. 



Eng. Bot. vol. xxiv. pi. 1675. Eng. Fl. vol. Hi. p. 99. Probably only a 

 variety of the next species. 876. 



3. S. pali'istris. Marsh Woundwart. Whorls of from six to ten flow- 

 ers ; leaves lance-shaped, embracing the stern ; root tuberous. Stem 



erect, from two to three feet high, rough with deflected bristles : leaves 

 serrate, somewhat woolly beneath : flowers purplish-red, variegated with 

 white and dark purple. Perennial : flowers in August : grows about 

 edges of rivers, ponds, and ditches, and in wet fields : frequent. Eng. 

 Bot. vol. xxiv. pi. 1675. Eng. Fl. vol. iii. p. 99. 877. 



4. S. Germdnica. Downy Woundwart. Whorls many-flowered ; leaves 

 egg-shaped, crenate, densely covered with white woolly hairs; stem 



woolly, erect. Stems two feet high : corolla light-purple : palate 



striped with white. Perennial : flowers in September : grows in hedges 

 and by road-sides in England : rare. Eng. Bot. vol. xii. pi. 829. Eng . 

 Fl. vol. iii. p. 100. 878. 



5. S. arvtntis. Corn Wounditort. Whorls six-flowered ; stem weak ; 



leaves heart-shaped, obtuse, crenate, slightly hairy. Stem branched, 



ascending: corolla small, light-purple, palate white and spotted with. 

 purple. Annual : flowers in July and August: grows in gravelly or 

 sandy fields: frequent. Eng. Bot. vol. xvii. pi. 1154. Eng. Fl. vol. iii. 

 p. 100. 879. 



6. S. dnnua. Pale Annual Woundu-ort. Whorls six-flowered ; leaver 



lanceolate, broadly serrate, three-nerved, the lower stalked. Stem 



erect, downy : calyx hairy, with awl-shaped segments : corolla light- 

 purple. Annual : flowers in August: found in a field between Gads-hill 

 and Rochester, by Jos. Woods, Esq. Eng. Bot. Suppl. pi. 2669. Brit. 

 Fl. 4th ed. p. 233. 880. 



12. BALLO'TA. BLACK HOREHOUND. 



Calyx of one leaf, tubular, oblong, with five corners, ten ribs, 

 and ten furrows, the limb dilated, spreading, plaited, regular, with 

 five pointed teeth. Corolla gaping; tube cylindrical, as long 

 as the calyx; upper lip erect, egg-shaped, notched; lower lip 

 three-lobed, the middle lobe larger and cleft. Filaments awl- 

 shaped, directed towards the upper lip; anthers oblong, two- 

 valved. Germen small, four-lobed. Style thread-shaped, as long 

 as the stamens; stigma slender, cleft. Seeds four, egg-shaped, in 

 the bottom of the somewhat hardened calyx. Named from ballo, 

 to reject, on account of its offensive odour. 291. 



1. B. nigra. Black Horehound. Leaves egg-shaped, undivided, ser- 

 rate ; calyx funnel-shaped, abrupt, with short spreading teeth. Stem 



two or three feet high, erect, branched, downy : calyx dilated at the 

 mouth: corolla dull-purple: upper lip cleft, covered externally with 

 white hairs, lower marked with white veins. Perennial : flowers in Julv 

 and August : grows among rubbish, and in hedges: common. Eng. Bat. 

 vol. L pi. 46. Eng . Fl. vol. iii. p. 10 1. 881 . 



13. MARRU'BIUM. HOREHOUND. 



Calyx of one leaf, tubular, funnel-shaped, with ten furrows, the 

 limb spreading, regular, generally with ten narrow teeth. Corolla 



