1176 LAMIACEAE 
Stem and leaves usually pubescent, sometimes slightly so: calyx- 
lobes EOD) long awn-tipped: leaf-blades with obtuse 
serrations. 8. L. europaeus. 
L. virginicus L. Stem 1-8 dm. tall, purplish or greenish-purple, obtuse- 
angled, not usually tuberous at the base, ee with tuber-bearing stolons: leaf- 
2-1 
ommon, in meadows and rather moist 
soil, various provinces, Ga. to Ark., Nebr., 
and N. H.—Sum.fall. 
2. L. uniflorus Miehx. Stem 1-8 dm. tall, 
green or sometimes purplish, sharp-angled, 
tuberous at the base, the stolons rarely 
sd -bearing: leaf-blades iei to E 
n eae Tum 8 em. long, s m ie 
l 5 ong; does dne NN due 
Bicknell] Low grounds, and eee vari- 
ous provinces, N. C. to Nebr., Ore., B 
Ont., and Newf. UP. —fall. 
L. rubellus Moench. Stem 5-10 dm. tall: leaf-blades elliptic, lanceolate, 
or ovate-elliptie, 3—15 em. long, sharply serrate or ppp calyx be- 
di 23 lly 2.6 mm. long; lobes d about as long as the tube: eorolla 
3. . long.—Low grounds, borders of s pd = stakes, Coastal Plain 
and adj. provinces, Fla. to La., Mo., ana N. Y.—Sum.—fall. 
4. L. velutinus Rydb. Similar to L. rubellus in habit, but copiously pubes- 
cent, the branches often densely so: leaf-blades elliptic, sometimes broadly so, 
or elliptic-lanceolate, coarsely toothed: calyx becoming 2.5 mm. long; lobes 
curved, much longer than the tube: corolla 3-3.5 mm. long.—Low grounds, 
various provinces, Miss. to Tex. and Colo.—Sum.-fall. 
5. L. sessilifolius A. a Stem 2-6 dm. tall: leaf-blades eu to elliptie 
or lanceolate, 1.5-6 em. long, shallowly db calyx 2-2.5 long; lobes 
as long as the faves "donet eorollaip with a reniform need: middle lobe: 
filaments pubescent at the base.—Wet soil a Ds grounds, Coastal Plain and 
New England Coast, Fla. to Miss. and Mass.—Sum.—fall. 
L. pubens Britton. Stem 6-12 dm. tall: leaf-blades elliptic, elliptic- -lanceo- 
late or linear-elliptie, 4.5—10 em. long, sharply serrate: calyx mai 5-8 mm. 
long ; lobes ee than the tube: lower corolla-lip with an oe obtuse middle 
lobe: fila ne nts glabrous Au s pinelands, Coastal Plain, Fla. to Miss. and S. C. 
—Sum.—fall. 
7. L. americanus Muhl. Stem 1-9 dm. tall, often pu e leaf-blades 
lanceolate to ovate-lanceolate, 2—10 em. long, t those the lower p of the 
S M ose i e y tooth pes 3 mm. 1 : 
corolla about as long a : staminodia thickened at the tip. [L. sinu- 
atus Ell.]— Moist cee a pie es, wet banks and meadows, various prov- 
inces, Fla. to Tex., Calif., B. C., Ont., and Newf.—Sum.—fall. 
L. rcs L. Stem 1 m. tall or less: leaf-blades ovate or elliptic- 
vate, 2— ong, obtuse a p Pepe Po o the lower ones, at 
pies, SCARE or pinnatifid near the bas long: corolla only 
slightly exceeding the calyx: nudes RT pite ie calyx- ~ .—Waste- 
r 
