536 LABIATAE 
the teeth nearly equal, spiny, 5- to 10-nerved; corolla with a narrow tube, 
2-lipped, dilated at throat, upper lip arched, entire, lower spreading, 
3-cleft. Stamens 4, ascending under the upper lip, the anterior pair the 
longest.. Style 2-cleft at the summit. 
1. G. Ladanum, L. (Fig. 6, pl. 134.) Rep Hemp Nettie. Stem 
downy, 6 to 18 in. long, erect. Leaves oblong lance-shaped, tapering at 
each end, downy; corolla red or rose color, frequently spotted with yel- 
low, much longer than the calyx. Waste places. Rare. July-Oct. 
2. G. Tetrahit, L. (Fig. 5, pl. 134.) Common Hemp Nettie. Stem 
1 to 3 ft. high, erect, the whole plant rough hairy. Leaves egg-shaped, 
on leaf-stalks, coarsely toothed. Corolla purple varied with white, twice 
as long as the calyx. Waste places. Naturalized. June-Sept. 
20. BALLOTA, L. 
Downy or woolly herbs, sometimes shrubs. With opposite dentate 
leaves and axillary whorls of small flowers. Calyx funnel-form, 10-nerved, 
expanding into a border of from 5 to 10 teeth. Corolla 2-lipped, the upper 
erect, concave or notched, lower 3-lobed, tube about as long as the calyx; 
the throat hairy. Stamens 4, ascending under the upper lip of the co- 
rolla, the anterior pair longer. Style 2-cleft at summit. 
B. nigra, L. (Fig. 9, pl. 134.) Briack Hoarnounp. Stem 13 to 3 
ft. high; the whole plant hairy but green. Leaves egg-shaped on slender 
foot-stalks, borders with coarse rounded teeth. Axillary whorls of flowers 
dense, Calyx teeth 5, longer than the tube of the purple corolla. Waste 
places. Naturalized. June-Oct. 
21. STACHYS, L. 
Herbs, with opposite leaves and with flowers in axillary whorls. Calyx 
bell-shaped, 5- to 10-nerved, equally 5-toothed. Corolla 2-lipped, all of 
ours purple, the tube not exceeding the calyx, narrow, not dilated at the 
throat. Stamens 4, the anterior pair longer, ascending under the upper 
lip of the corolla. 
Leaves linear . Se en oP Oro cis rane 
Leaves more or less egg: -shaped or oblong. 
Stems erect. ; 
Stems smooth . wet le; lel a) cel oe, bie) coi Py cay ASR pee PESEN Euan 
Stem hairy on the angles : 3 em Rec Je. te har LO REaCROR EEE 
Stems hairy on the sides and angles. | 
Leaves densely pubescent, both sides, not more than half 
an inch wide . S. arenicola 
Leaves not densely pubescent, more than half an inch wide 
Sy Cie palustris 
Stems decumbent... . Lees as oi te 55. arvensis 
1. §. hyssopifolia, Michx. ‘(Fig lp “a 135.) “Stem about 1 ft. high, 
smooth or slightly hairy at the nodes. Leaves linear, entire, tapering at 
both ends, without leaf-stalks. Flowers light purple in a kind of terminal 
spike consisting of a few whorls of 4 to 6 flowers each. Moist fields, 
Mass., and southward. July-Sept. 
Var. ambigua, A. Gray. (Fig. 2, pl. 135.) Stouter. Leaves with low 
teeth, plant somewhat hairy. Eastern Penna., southward and westward. 
2. §. tenuifolia, Willd. (Fig. 3, pl. 135.) Smoorm Hepner Nerrre. 
Stem 1 to 24 ft. high, smooth or rough with minute bristly hairs on the 
