278 LABIATE. 



yellowish. Introduced and naturalized in some places. It is cultivated as a 

 medicinal herb ; the infusion being considered as a useful drink in fevers. 



Common Balm. 



V. ScuTELLARiNE^. Up'per lip of the calyx truncate, entire or 

 somewhat 3-toothed. Corolla 2-lipped; the upper lipgaleate. Stamens 

 4, ascending ; the lower pair longer. 



15. PRUNELLA. Linn.— Self Heal. 



(From the German BruneUe, again derived from Braeune, the quinsy ; because 

 the plant was supposed to cure that disease.) 



Calyx tubular-campanulate, 2-lipped ; upper lip flat, dilated, 

 truncate, with 3 short teeth ; lower 2-cleft. Corolla 2-lipped ; 

 upper lip erect, vaulted, entire ; lower depending, 3-lobed. Sta- 

 mens 4, ascending. Filaments 2 -toothed at the apex. 



P. vulgaris Linn. : leaves petiolate, oblong-ovate, toothed at base ; lips 

 of the calyx unequal ; the upper one truncate, S-awned. P. Pennsylvanica 

 WiUd. 



Meadows. Can. to Car. W. to Miss. June — Aug. %.. — Stem 8 — 12 inches 

 high, erect or ascending, somewhat branched, hairy. Flowers large, purple, 

 densely whorled, so as to form an imbricated oblong spike. Introduced ? 



Common Self-heal. 



16. SCUTELLARIA. Z.^7^7^.— Skullcap. 



(From the Latin scutella, a little dish or cup ; in allusion to the appearance of 

 the calyx with its appendage.) 



Calyx campanulate, 2-lipped ; lips entire ; upper one with a 

 galeate appendage on the back, deciduous. Corolla 2-lipped ; 

 the tube elongated ; upper lip vaulted ; lower dilated, convex. 

 Stamens 4, ascending under the upper lip of the corolla. 



1. (S*. canescens Null.: stem tall, branched, pubescent ; leaves ovate or 

 ovate-lanceolate, acute, crenate. petiolate, pubescent on both sides, white 

 beneath ; lower somewhat cordate ; flowers in loose paniculate racemes ; 

 calyx white-tomentose. S. jnibescens Muhl. 



Woods. Can. to Virg. W. to Miss. July. %..—Stem 2—3 feet high, erect, 

 branched, hoary-pubescent. Leaves2 — 3 inches long. Flowers 8 — 9 lines long, 

 deep blue, in lateral and terminal racemes. Canescent Skullcap. 



2. S. pilosa Mich : stem erect, mostly simple, pubescent ; leaves remote, 

 rhombic-ovate, crenate-serrate, petiolate ; upper cuneate or narrowed at 

 base ; lower rounded or cordate : raceme terminal, loose, mostly branched ; 

 bracts elliptic-ovate. 



^ Open woods. N. Y. to Car. June, July. %. — Stem 12 — 18 inches high, 

 often purplish. Lov>er leaves sometimes cordate, on petioles an inch or more 

 long. Flowers large, in a somewhat paniculate terminal raceme, white, tinged 

 with violet at the summit. A variable species. Hairi/ Skullcap. 



3. S. integrifolia. : Linn stem nearly simple, pubescent ; leaves oblong- 

 lanceolate or linear, obtuse, smoothish, on short petioles, entire or very ob« 



