356 LABIATvE. (JIIXT FAMILY.) 



form of this, as is S. rugosa, Wood. (Tlie latter from Harper's Ferry, Dr. Aikin, 

 according to Wood.) 



2. S. saxitUiS, Riddell. Smoothish or slightl;/ hairy ; stem weak, ascend- 

 ing (6'- 18' long), often prodncing runners, branched; leaves ovate m' ovate-oblong 

 and mostly heaii-shaped, coarsely crcnatc-toothed (l'-2' long), thin, obtuse; upper 

 bracts oblong or orate, 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. 



■I- *- Lateral lobes of the corolla small, much shorter than the decidedly arched or in- 

 curved upper lip, and connected with it: stem erect: leaves modaately petioled, 

 except in No. 6. 



3. S. ean6scens, Nutt. Stem branched (2° -4° high) abore, with the 

 panicled many-Jlowered racemes, Jlowers, and the lower surface of the ovate or lance- 

 ovate acute (at the base acute, obtuse, or cordate) crenate leaves whitish with fine 

 soft 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. serr^ta, Andrews. Green and nearly glabrous ; stem rather simple 

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

 both 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, Maryland, Illinois, and southward. 



5. S. pildsa, Michx. Pubescent with spreading hairs; 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-petioled, 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. hirsiita, Short, is a large form.) — Dry ground, S. New York to Michigan 

 and southward. 



6. S. illtegrif61ia, L. Downy all over until a minute hoariness ; stem com- 

 monly simple (1° - 2° high) ; leaves oblong-lanceolate or linear, mostly entire, obtuse, 

 very short-petioled ; raceme often branched ; corolla (1' 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 mostly 



sessile leaves, which are simitar to the lower ones. 



H- 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) ; lower leaves roundish; the middle ones orate, toothed, somewhat heart-shaptd 

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

 (S. gracilis, Nutt.) — Moist thickets, New York to Illinois and southwai-d. 



8. S. p&rvula, Michx. Minutely downy, dwarf (3' -6' high), branched 

 and spreading ; lowest leaves round-ovate ; the others ovate or lance-ovate, obtuse, all 

 eiftire or nearly s^o, slightly heart-shaped {&" -8" long). (S. ambigua, i\^u«.) — 

 Dry b.iuks, W. New Ungland to Wisconsin and southwai'd. May, June. 



