LABIATAB (MINT FAMILY) 709 



80. CUNtLA L. Dittany 



Calyx oyoid-tubular, equally 5-toothed, very hairy in the throat. Upper lip 

 of corolla erect, flattish, mostly notched ; the lower spreading, 3-cleft. Stamens 

 2, erect, exserted ; sterile filaments short, minute. — Perennials, with small white 

 or purplish flowers, in corymbed cymes or clusters. (An ancient Latin name, 

 of unknown origin.) 



1. C. origanoides (L.) Britton. (Common D.) Stems tufted, corymbosely 

 much branched, 2-4 dm. high ; leaves smooth, ovate, serrate, rounded or heart- 

 shaped at base, nearly sessile, dotted, 1.5-4 cm. long; cymes peduncled ; calyx 

 striate. (C Mariana L.) — Dry hills, N. Y. to 111., Ark., and Ga. 



31. L"^COPUS [Tourn.] L. Water Horbhound 



Calyx bell-shaped, 4-5-toothed, naked in the throat. Corolla bell-shaped. 

 Stamens 2, distant, the upper pair either sterile rudiments or wanting. Nutlets 

 with thickened margins. — Perennial mostly stoloniferous herbs, ^abrous or 

 pnberulent, resembling Mints, with sharply toothed or pinnatifid leaves, the 

 floral ones similar and much longer than the dense axillary whorls of small 

 mostly white flowers; in summer. (Name compounded of Xtfras, a wolf, and 

 TTO'is, foot, from some fancied likeness in the leaves.) 



* Leaves merely serrate. 



t- Calyx-teeth lanceolate or deltoid, barely acutish, shorter than the mature 



nutlets. 



1. L. virglnicus L. (Bugle Weed.) Stem ohtnaelj a,Tig\edi, usually puberu- 

 lent, 2-8 dm. high, rising/rom a slender {not tuberous-thickened) base; stolons 

 filiform, not tuberiferous ; leaves dark green (or purple-tinged), ovate or ovate- 

 oblong, firm, rather abruptly acuminate at both ends, coarsely toothed, 6-15 cm. 

 long, 2-5 cm. broad ; glomerules dense, often seemingly compound, in maturity 

 8-15 mm. broad; calyx ovoid-cylindric ; corolla tubular, with erect lobes; sta- 

 mens mostly included. — Rich moist soil, N. H. to Neb., and southw. (Asia.) 



2. L. uniflbrus Miohx. (Bugle Weed.) Similar, but usually more slender 

 and glabrate, from a tuberous base; stolons finally tuberiferous; leaves light 

 green (rarely purple-tinged), thinner, lanceolate to lance-oblong, gradually nar- 

 rowed at both ends, 2-11 cm. long, 0.5-3.5 cm. broad ; glomerules smaller and 

 less dense, in maturity 4-9 mm. broad; calyx campanulate ; corolla with flaring 

 lobes; stamens mostly exserted. (i. communis and L. membranaceus Biok- 

 nell.) — Low ground, Nfd. and Lab. to B. C, s. to mts. of Va., Mich., Minn., 

 Neb., Wyo., and Ore. (Asia.) 



♦- ^- Galyxrteeth narrow, very acute, longer than the nutlets. 



++ Bracts minute; corolla twice as long as the calyx. 



3. L. sessilifMius Gray. Tuberiferous ; stem rather acutely 4-angled, puber- 

 nlent ; leaves closely sessile, ovate to lanceolate, 3-10 cm. long, sparsely sharp- 

 serrate ; calyx-teeth subulate, rigid. — Low grounds, Mass. to Fla. and Miss., 

 near the coast. 



4. L. rub^Uus Moench. Stem rather obtusely 4-angled ; leaves petioled, 

 ovate-oblong or oblong-lanceolate, sharply serrate in the middle, attenuate-acu- 

 minate at both ends, 4-12 cm. long ; calyx-teeth triangular-subulate, not rigid- 

 pointed.— Vt. and Mass. to Minn., and southw. —Resembles no. 1, but has 

 long slender calyx-teeth. 



** ++ Outer bracts conspicuous ; corolla hardly exceeding the calyx. 



5. L. Ificidus Turcz., var. americanus Gray. Stem strict, stout, 2-9 dm. 

 high ; leaves lanceolate and oblong-lanceolate, 5-10 cm. long, acute or acumi- 

 nate, very sharply and coarsely serrate, sessile or nearly so ; calyx-teeth lance- 

 ovate, acuminate. (£. asper Greene.) — Mich, to Man., Kan., and westw. — 

 Typical L. lucidus of Asia and n. w. Am. , with elongate subpetiolate leaves and 

 lance-subulate calyx-teeth, approaches our n. w. borders. 



