802 FLORA. 



Leaves ovate, or some of them ovate-lanceolate, short-petioled, sharply serrate, 

 serrulate, or the upper entire, acute, rounded at the base, 2-5 cm. long, 8-25 mm. 

 wide; bracts long-awned, appressed, the awn about one-third the length of the 

 body; calyx canescent, its teeth equal, bristle-pointed, one-third to one-half as 

 long as the tube. In dry pine barrens, N. J. to Fla. and La. July-Sept. 



8. Koellia incana (L.) Kuntze. HOARY MOUNTAIN-MINT. (I. F. f. 3161.) 

 Stem pubescent, or glabrous below, 4-9 dm. high. Leaves thin, ovate to ovate- 

 lanceolate, petioled, acute, serrate or serrulate, white-canescent beneath, 3-8 cm. 

 long, or the uppermost smaller and sometimes canescent on both sides; clusters 

 loose, terminal and in the upper axils, canescent, bracts linear, or the outer 

 broader, canescent or slightly villous; calyx canescent, its teeth subulate, some- 

 what unequal. Dry thickets and hill-sides, Me. to Ont., Ohio and Fla. Aug-Oct. 



9. Koellia pycnanthemoides (Leavenw.) Kuntze. SOUTHERN MOUNTAIN- 

 MINT. (I. F. f. 3162.) Stem pubescent nearly to the base, 6-9 dm. high. 

 Leaves membranous, petioled, mostly ovate -lanceolate, acuminate or acute, serrate, 

 pubescent beneath, puberulent or glabrate above, 3-10 cm. long, the upper smaller 

 and white-canescent on both sides; clusters loose, villous and canescent, terminal 

 and axillary, 2-5 cm. broad, the flowers often secund; bracts linear-oblong, acu- 

 minate or subulate-tipped; calyx-teeth very unequal, subulate, densely villous, the 

 longer about equalling the tube. In dry woods and on hills, Va. to Ga. and Term. 

 July-Sept. 



10. Koellia albescens (T. & G.) Kuntze. WHITE-LEAVED MOUNTAIN- 

 MINT. (I. F. f. 3163.) Stem soft-pubescent nearly to the base, 3-6 dm. high. 

 Leaves ovate to ovate-lanceolate, petioled, acute or subacuminate, serrate or nearly 

 entire, 2-6 cm. long, white-canescent beneath, green above, or the upper canes- 

 cent on both sides; clusters terminal and axillary, densely canescent; bracts linear, 

 or the outer broader; calyx densely canescent, its teeth triangular, one-fifth to one- 

 fourth as long as the tube. In dry woods and thickets, Va. to Mo., Ark., Fla. and 

 Tex. July-Sept. 



11. Koellia mutica (Michx.) Britton. SHORT-TOOTHED MOUNTAIN-MINT. 

 (I. F. f. 3164.) Stem stiff, puberulent, or glabrous below, 3-8 dm. high. Leaves 

 short-petioled or sessile, ovate or ovate-lanceolate, firm, acute at the apex, rounded 

 or sometimes subcordate at the base, sharply serrate or serrulate, 3-8 cm. long, 

 the uppermost white-canescent on both sides, much smaller; flower- clusters capi- 

 tate, cymose, often also in the upper axils, pubescent or canescent, 8-14 mm. 

 broad; bracts lanceolate- subulate or the outer broader; calyx pubescent, its teeth 

 not much longer than wide, about one-fifth as long as the tube. In sandy soil, Me. 

 to Va. and Fla., west to Mo. July-Sept. 



12. Koellia montana (Michx.) Kuntze. THIN-LEAVED MOUNTAIN-MINT. 

 (I. F. f. 3165.) Glabrous or nearly so, 6-9 dm. high. Leaves petioled, mem- 

 branous, glabrous, ovate-lanceolate or the upper lanceolate, long-acuminate, 

 sharply serrate, 5-13 cm. long, none canescent; flower -clusters terminal and in the 

 upper axils, 1-2.5 cm. broad; bracts lanceolate or linear-lanceolate, acuminate, 

 bearded more or less with long hairs; calyx tubular, its teeth triangular-subulate, 

 one-fifth to one-fourth as long as the tube. In woods, mountains of Va. to Ga., 

 Tenn. and Ala. July-Sept. 



32. THYMUS L. 



Perennial herbs, or low creeping shrubs, with small leaves, and small purple 

 flowers in terminal glomerules, or in the axils of the leaves. Calyx ovoid, villous 

 in the throat, iO-13-nerved, 2-lipped, the upper lip erect- spreading. 3 -toothed, the 

 lower 2-toothed, its teeth long and slender. Corolla-limb 2-lipped, the upper lip 

 erect, emarginate, the lower spreading, 3-cleft. Stamens 4, mostly exserted; anthers 

 2-celled, the sacs parallel or divergent. Nutlets ovoid or oblong, smooth. '[Greek 

 incense.] About 50 species, of the Old World. 



i. Thymus Serpyllum L. WILD OR CREEPING THYME. MOTHER OF 

 THYME. (I. F. f. 3166.) Stems more or less pubescent in lines, slender, procum- 

 bent, tough, much branched, 1-3 dm. long, commonly forming dense mats. Leaves 

 oblong or ovate-oblong, petioled, obtuse, entire, glabrous, or ciliate, 4-10 mm. 

 long; bracts similar to the leaves, but smaller; calyx 2-lipped, the tube usually 



