LABIATAE (MINT FAMILY) 693 



* Perennials ; leaves merely dentate or serrate ; inflorescences terminal, spiciform. 

 H- Inflorescence cylindric ; calyx densely pubescent. 



1. T. canadSnse L. (AMERICAN G., WOOD SAGE.) Stems 1 m. or less high, 

 appressed-pubescent, simple or branched ; leaves lanceolate to ovate, serrate, 

 2.5-5 cm. broad, rounded or narrowed at base, short-petioled, hoary beneath, 

 green and glabrous or sparingly appressed-pubescent but scarcely papillose above ; 

 whorls about 6-flowered, crowded in long and simple wand-like racemes ; calyx 

 canescent-pannose, the 3 upper lobes very obtuse, or the middle one acutish; 

 corolla 1.5-2 cm. long, purplish, pink, or sometimes cream-color. Rich low 

 ground, N. E. to Neb., and southw. July-Sept. 



Var. littorale (Bicknell) Fernald. Stiff, usually simple, 2-7 dm. high ; leaves 

 lanceolate to lance-ovate, 1.5-3 cm. broad, mostly tapering at base, thick and 

 somewhat rugose, the upper surface papillose beneath the dense appressed pubes- 

 cence ; flowers slightly smaller. ( T. littorale Bicknell.) Near the coast, Me. 

 to Fla. and Tex., and northw. in the Miss, basin to Okla. 



2. T. occidentale Gray. Stem villous, 3-9 dm. high ; leaves lance- to ovate- 

 oblong, white-villous beneath ; calyx and bracts villous with viscid hairs and 

 with shorter capitate or stipitate glands; the upper calyx-lobes acute or the 

 middle one acuminate; corolla 8-12 mm. long. Alluvial soil, Me. to B. C., s. 

 to Pa., O., Mo., N. Mex., and Cal. 



Var. boreale (Bicknell) Fernald. Stem more closely pubescent ; calyx and 

 bracts with few or no capitate glands amongst the often viscid hairs ; corolla 

 slightly longer. (T. boreale Bicknell.) Similar situations, n. N. H. to Wash., 

 s. to w. N. Y., 111., and Tex. 



t- H- Inflorescence secund ; calyx glabrous or glabr ate. 



3. T. SCORODONIA L. (WOOD SAGE, GERMANDER SAGE.) Stems ascending 

 from a freely creeping rootstock, villous, 2-5 dm. high, simple or with few erect 

 branches ; leaves deltoid-lanceolate to -ovate, crenate, rugose, cordate or trun- 

 cate at base, short-petioled ; flowers pale yellow, paired in slender 1-sided 

 racemes ; upper tooth of the calyx large and recurved. Said to be established 

 in Ont. and O. (Adv. from Eu.) 



* * Annual ; leaves pinnatifld ; flowers in axillary verticels. 



4. T. B6TRYS L. (CUT-LEAF G.) Erect or decumbent, 1-3 dm. high ; leaves 

 long-petioled, rhombic-ovate, 1-2 cm. long, divided into few linear or oblong 

 segments ; flowers slender-pediceled ; corolla reddish-purple ; calyx gibbous- 

 campanulate, the lower side saccate, the subequal deltoid teeth short. Dry 

 pastures, waste places, etc., local, w. Mass, to Ont. and 0. (Nat. from Eu.) 



3. ISANTHUS Michx. FALSE PENNYROYAL 



Calyx equally 5-lobed, enlarged in fruit. Corolla little longer 

 than the calyx; the border bell-shaped, with obovate lobes. 

 Stamens slightly didynamous, incurved-ascending, scarcely ex- 

 ceeding the corolla. A low much branched annual, clammy- 

 pubescent, with nearly entire lance-oblong 3-nerved leaves, and 

 small pale blue flowers on axillary 1-3-flowered peduncles. 

 (Name from foot, equal, and Av8os 9 flower, referring to the 

 almost regular corolla.) 



1. I. brachiatus (L.) BSP. Corolla 5 mm. long, little ex- 

 _ ceeding the calyx. (/. caeruleus Michx. ) Dry or sterile 



885 I brachiatus ground, Vt. and w. Que. to Minn., and southw. July, Aug. 

 x y a . FIG. 885. 



4. TRICHOSTEMA L. BLUE CURLS 



Calyx bell-shaped, deeply 5-cleft ; the 3 upper teeth elongated and partly 

 united, the 2 lower very short. Stamens with very long curved capillary fila 



