LABIA TAE. 803 



pubescent and the teeth ciliate; corolla longer than the calyx. In thickets, woods, 

 and along roadsides, N. S. to Mass., N. Y., Penn. and N. Car. Nat. from Europe. 

 June-Sept. 



33. CUNlLA L. 



Perennial aromatic herbs, or low shrubs, with rather small purple or white 

 flowers. Calyx tubular-ovoid, io-13-nerved, villous in the throat, equally 5 -toothed. 

 Corolla 2-lipped, longer than the calyx, the upper lip erect, emarginate, the lower 

 spreading, 3-cleft. Anther-bearing stamens 2, long-exserted, straight, the pos- 

 terior pair rudimentary, or wanting; anther sacs parallel. Nutlets smooth; scar of 

 attachment basal and small. [Latin name of some plant.] About 15 species, 

 natives of Am. 



i, Cunila origanoides (L.) Britton. STONE MINT. AMERICAN DITTANY. 

 (I. F. f. 3167.) Stem slender, stiff, glabrous, or pubescent at the nodes, 2-5 dm. 

 high. Leaves ovate, sessile, or short-petioled, acute, sharply serrate, rounded, 

 truncate or subcordate at the base, 1-4 cm. long, densely punctate; flowers 

 10-12 mm. long, in terminal loose cymose clusters; corolla purple-pink; posterior 

 pair of stamens usually rudimentary. In dry woods and thickets, N. Y. to Fia., 

 Ohio and Ga. Plant very aromatic. Aug. -Sept. [C. Mariana L.] 



34. LYCOPUS L. 



Herbs, perennial by slender stolons or suckers, with small white or purple 

 flowers, bracted and verticillate in dense axillary clusters. Calyx campanulate, 

 regular or nearly so, 4-5 -toothed, not bearded in the throat. Corolla funnelform- 

 campanulate to cylindric, the limb nearly equally 4-cleft, or one of the lobes 

 broader and emarginate. Perfect stamens 2, anterior, the posterior pair rudimen- 

 tary, or altogether wanting; anther-sacs parallel. Nutlets truncate at the summit, 

 narrowed below, trigonous, smooth. [Greek, wolf- foot.] About 15 species, of the 

 north temperate zone. Besides the following, 3 or 4 others occur in western 

 N. Am. 



Calyx-teeth 4 or 5, ovate, shorter than the nutlets. 



Leaves mostly ovate, usually purple; base of stem not tuberous^ 



i. L. Virginicus. 

 Leaves mostly lanceolate to oblong; base of stem tuberous. 



Leaves mostly firm, sessile or nearly so. 2. L. communis. 



Leaves membranous, slender-petioled. 3. L, membranaceus. 



Calyx-teeth mostly 5, lanceolate or subulate, longer than the nutlets. 

 Bracts minute; corolla twice as long as the calyx. 



Leaves sessile. 4. L. sessilifolius. 



Leaves narrowed into a manifest petiole. 5. L. rubellus. 



Bracts lanceolate or subulate; corolla not twice as long as the calyx. 



Leaves pinnatifid or deeply incised. 6. L. Americanus. 



Leaves merely coarsely dentate or serrate (lower rarely incised) . 

 Leaves oblong or oblong-lanceolate, serrate. 



Leaves thin, narrowed at base. 7. L, lucidus. 



Leaves firm, rounded at base. 8. L. asper. 



Leaves ovate, coarsely dentate. 9. L. Europaeus, 



1. Lycopus Virginicus L. PURPLE BUGLE-WEED. Purplish, rarely green, 

 stouter than the following species and more puberulent, the stem obtusely angled, 

 not tuberous at the base, but the stolons bearing terminal tubers. Leaves ovate to 

 ovate-oblong, usually abruptly narrowed to both ends, acuminate, 6-15 cm. long, 

 coarsely toothed, often slender-petioled; clusters dense, subglobose; calyx cylindra- 

 ceous, the erect lobes oblong to oblong-lanceolate, acutish; corolla 2 mm. long or 

 less, not twice the length of the calyx, narrowly tubular, the short subequal lobes 

 erect or nearly so; stamens and style included; sterile stamens evident; nutlets 

 1.5-2 mm. lonjr, transversely notched and strongly denticulate. In moist soil, 

 Conn, to Ala., Neb. and Kans. July-Sept. 



2. Lycopus communis Bicknell. COMMON BUGLE-WEED. (I. F. f. 

 3168, as L. Virgimcus.} Green, or sometimes purplish, roughish-puberulent, or the 

 leaves elabrate; stem tuberous at base, 1-8 dm. high, subacutely angled with 

 grooved sides; stolons rarely tuber-bearing. Leaves 2.5-8 cm. long, oblong, 

 narrowed to base and apex, serrate, very short-petioled; calyx campanulate, the 

 lobes ovate to ovate-oblong, obtusish; corolla 2-3 mn|. long, abruptly dilated at the 



