356 LABIAT.E. (mIXT FAMILY.) 



form of this, as is S. rugosa, Wood. (The hatter from Harper's Feny, Dr. Aihln, 

 according to Wund.) 



2. S. saxatilis, Riddell. Smoothish or sliglul'/ Itairi/ ; stem weak, ascend- 

 ing (6'- 18' long), often producing runners, branched; leaves ovate or omte-oblong 

 and mostlij heart-shuped, coarsely crenate-toothed (l'-2' long), thiri, obttisn ; upper 

 bracts oblong or ovate, small ; racemes loose. — Moist shaded banks, S. Ohio, 

 Virginia, and Kentucky, and southward in the mountains. — Corolla 8" long, 

 the lateral lobes connected with the straightish upper lip. 



•*- -t- Lateral lobes of the corolla small, 7nitcJi shorter than the decidedly arched or in 

 curved upper lip, and connected with it: stem erect: leaves modeiately peliuhd, 

 except in No. 6. 



3. S. can6scens, Nutt. Stem branched (2° -4° high) above, with the 

 paniclcd many-flowered racemes, flowers, and the lower surface of the ovate or lance- 

 ovatu acute (at the base acute, obtuse, or cordate) crenate leaves whitish icith flne 

 sofl down, often becoming rather glabrous ; bracts oblong or lanceolate ; upper 

 lip of the corolla shorter than the lower. — Rich ground, Penn. to Illinois and 

 southward. — Corolla 8" long. 



4. S. serrata, Andrews. Green and nearly glabrous; stem rather simple 

 (l°-3° high), Avith single loosely-flowered racemes; leaves serrate, acuminate at 

 loth ends, ovate or ovate-oblong ; calyx, &c. somewhat hairy ; lips of the corolla 

 equal in length (corolla 1' long, the tube more tapering below than in the last, 

 which this resembles). — Woods, Penn. to Illinois, and southward. 



5. S. pil6sa, Michx. Pubescent with spreading Jmirs; stem nearly simple 

 (1° -3° high) ; leaves rather distant, crenate, oblong-ovate, obtuse, varying to round- 

 ish-ovate, the lower abrupt or heart-shaped at the base and long-petiolcd, the 

 upper on short margined petioles, veiny ; bracts oblong-spatulate ; racemes short, 

 often branched ; corolla (6" - 8" long) rather narrow, the lower lip a little shorter. 

 (S. hirsuta, Short, is a large form.) — Dry ground, S. New York to Michigan 

 and southward. 



6. S. illtegl*if61ia, L. Downy all over with a minute hoariness ; stem com- 

 monly simj)le (l°-2o high) ; leaves Mong-lanceolate or linear, mostly entire, obtuse, 

 very short-petiolcd ; raceme often branched ; corolla (I'long) much enlarged above, 

 the ample lips equal in length. — Borders of thickets, from Bridgewater, Mass. 

 (Mr. Howard), to Pennsylvania and southward. 



* * Flowers {blue or violet, short-peduncled) solitary in the axils of the upper mosdy 



sessile leaves, which are similar to the lower ones. 



•1- Corolla (2" -3" long) seldom thrice the length of the calyx; the short lips nearly 



equal in length, the upper lip concave. 



7. S. nervdsa, Pursh. Smooth, simple or branched, slender (10' -20- 

 high) ; loivcr leaves loundi.^h ; the middle ones orate, toothed, somewhat heart-shaped 

 (V long) ; the floral ovate-lanceolate, entire ; nerve-like veins prominent beneath. 

 (S. gracilis, Nutt.) — Moist tliickcts, New York to Illinois and southward. 



( (^/vi*^S. parvula, Michx. Minutely downy, dwarf (3' -6' high), branched 

 P^ arrd spreading; lowest leaves round-ovate ; the others ovate or lance-ovate, obtuse, all 

 entire or nearly so, slightly hcarl'shaprd (G" -8" long). (S. amlngua, A^««.) — 

 Dry banks, W. New England to Wisconsin and southward. May, June. 



