af Lycopus (Tourn,e) Le Water Horehound, 
Peremnial herbs with horizontal rootstocks or arising from small 
horizontal tubers; leaves coarsely toothed or incised, Flowers in compact 
axillary glomerules, small. Calyx campanulate, 5-lobed or toothed, Corolla 
campanulate or tubular-funnelform appearing nearly equally 4-lobed, the 
uppermost lobe somewhat larger. Fertile stamens 2, the filaments of the 
posterior pair frequently oresent, without anthers, Nutlets flattened 
triangular, with a horseshoe-snhaved callosity marginally on the back, 
glandular on the inner face, truncate at the apex and even or somewhat 
toothed. 
7 An ae 
© Plants with creeping horizontal rootstocks; calyx- 
teeth acuminate, subspinose, exceeding the mature 
4 Auutlets | J, Le esmericenus 
o Plants propagating by small horizontal tubers which 
are found at the ends of slenderstolons; calyx 
teeth acute or obtuse, equalling or shorter than 
he mature nutlets. 2, Le uniflorus 
—o 
a 
-——~ Le americanus Muhl, Stems from rootstocks, without stolons, virgate 
and branching above, 20-50 cm, tall, glabrate, the angles very acute, 
marginate; leaves 5-5 cm. long, 10-15 mm, wide, elliptical-lanceolate, 
the lowermost pinnatifid, the upver laciniate or sharply toothed, very acutes 
narrowed at the base to indefinite petioles or subsessile, both surfaces 
glabrous or the veins beneath hirtellouss; gslomerules 5-7 mm, wide; calyces 
e=25 mm, long, the teeth trianguler-acuminate, sub¢spinose at the tiv, 
exceeding the nutlets at maturity; corolla white, or rose-tinted, 2-2,5 
mn, long, scarcely exserted from the calyx-teeth, the tube closed by a 
hairy ring at the base of the stamens; nutlets 1 mm, longe 
Frequent in boggy ground and along stream and lake shoreSe 
je fn 
6 5 uy 
eee ee 
