142 LABIATAE, "Vou. IIL. 
1. Koellia virginiana (L.) MacM. Virginia Mountain-Mint. Fig. 3660. 
Satureja virginiana L. Sp. Pl. 567. 1753. 
P. lanceolatum Pursh, Fl. Am. Sept. 409. 1814. 
Koellia virginiana MacM. Met. Minn. 452. 1892. 
Stem strict, rather stout, glabrous or pubescent, 
1°-3° high. Leaves lanceolate or linear-lanceo- 
late, fragrant, very short-petioled or sessile, firm, 
entire, acuminate at the apex, glabrous or some- 
what puberulent beneath, or the uppermost densely | 
canescent, I’-2’ long, 2’’-5’’ wide, often with short 
leafy branches in their axils; glomerules dense, 
4-6” in diameter, terminal, corymbed, canescent; 
bracts appressed, rigid, acute, acuminate or subu- 
late-tipped, not exceeding the clusters; calyx 
cylindraceous, or expanded above, canescent, its 
teeth triangular-ovate, equal or nearly so, acute, 
little longer than wide, about one-fourth as long 
as the tube; corolla pubescent without, purple- 
spotted, its tube longer than the calyx. 
In dry fields and thickets, Quebec and Ontario to 
Minnesota, south to Georgia, Alabama and Kansas. 
Virginia or mountain thyme. Prairie-hyssop. Penny- 
royal. Basil. July—Sept. 
Satureja Thymus virginicus L. Mant. 2: 409. 1771. Not 
Origanum flexuosum Walt. Fl. Car. 165. 1788. 
Koellia capitata Moench, Meth. 408. 1794. 
Pycnanthemum linifolium Pursh, Fl. Am. Sept. 409. 1814. 
P. fleruosum B.S.P. Prel. Cat. U. S. 42. 1888. 
Koellia flexuosa MacM. Met. Minn. 452. 1892. 
Stem slender, stiff, nearly glabrous throughout, 14°-23° 
high. Leaves linear or linear-lanceolate, entire, glabrous 
or the uppermost puberulent, sessile, or the lower very 
short-petioled, 1’-2’ long, 3’-14” wide, rather firm, often 
with short leafy branches in their axils; glomerules dense, 
terminal, corymbed, 3-5” broad, canescent; bracts ap- 
pressed, acuminate, or subulate-tipped, not longer than 
the clusters; calyx cylindraceous, canescent, its teeth subu- 
late and rigid, equal or nearly so, 3-4 times longer than 
broad, about one-third as long as the tube; corolla-tube 
longer than the calyx. 
In fields and thickets, Maine to Florida, New York, Minne- 
sota, Kansas and Texas. Little fragrant. July—Sept. 
3. Koellia pilésa (Nutt.) Britton. Hairy 
Mountain-Mint. Fig. 3662. 
Pycnanthemum pilosum Nutt. Gen. 2: 33. 1818. 
Pycnanthemum muticum var. pilosum A. Gray, Syn. Fl. 
ay Part ty 35%: 1878, 
Koellia pilosa Britton, Mem. Torr. Club 5: 279. 1894. 
Pubescent, at least above, 1°-23° high. Leaves 
lanceolate, very short-petioled or sessile, entire or 
very sparingly denticulate, 1’-2’ long, 3-6” wide, 
firm, acuminate at the apex, mostly narrowed at the 
base, commonly with smaller ones, or short leafy 
shoots in their axils; glomerules dense, numerous, 
terminal, villous or hirsute-canescent, about 4” in 
diameter; bracts lanceolate, acuminate, equalling or 
exceeding the clusters; calyx cylindraceous, narrow, 
canescent, its teeth lanceolate-subulate, equal, often 
ciliate, about 3 times as long as wide and one-fourth 
the length of the tube; corolla pubescent, its tube 
little longer than the calyx; stamens exserted. 
On prairies and in dry woods, Ontario to Pennsyl- 
\ vania, Georgia, lowa, Kansas and Arkansas. July—Sept. 
Koellia léptodon (A. Gray) Small, of the North Carolina mountains, with bristly-ciliate calyx- 
teeth, is recorded as extending to Ohio and Missouri. 
