LABIATE. 279 



scurely toothed ; racemes terminal, subpaniculate, loose, leafy ; bracts 

 lanceolate. >§. hyssopifolia Linn. S. Caroliniana Pursh. 



Moist grounds. N. Y. to Geor. W. to Miss. June, July. %..—Stem 1—2 

 feet high, sparingly branched above, grayish-green. Flowers very large, in 

 loose terminal and subterrainal racemes, blue at the summit, the tube nearly 

 white. A very showy species. Entire-leaved Skullcap. 



4. (S". gakriculata Linn. : stem simple or divaricately branched ; leaves 

 ovate-lanceolate, on very short petioles, acute, roundish and cordate at 

 base, crenate ; flowers axillary, solitary, on short pedicels. 



Wet meadows. Can. Mass. N. Y. W. to Oregon. Aug. %.—Stem 12—18 

 inches high, smooth or pubescent. Flowers half an inch long, blue, pubescent. 



Common Skullcap. 



5. (S. parvula Mich. : stem decumbent or oblique, slender, branching from 

 the base, minutely pubescent ; leaves ovate or lance-ovate, remotely serrate 

 or entire, sessile, subcordate at base, prominently veined ; flowers small, 

 axillary. (S*. ambigua Niiit. 



Rocky grounds. Can. to Virg. W. to Miss. .June, July. %. — Root (.rhi- 

 zoma) consisting of a succession of tubers. Stem 4 — 8 inches high, simple or 

 branched from near the base and spreading, mostly purplish. Leaves i — 8 lines 

 long, rather closely sessile, distinctly veined, purplish beneath. Flowers from 

 3 — 4 lines long, blue, axillary, hairy. The specimens found by Dr. A. F. 

 Holmes, in Canada, and by Dr. D. Houghton, on the Upper Mississippi, agree 

 exactly with those from New Brunswick, N. J. Small Skullcap. 



6. S. nervosa Pursh : stem erect, mostly simple, smoothish ; lower leaves 

 roundish-cordate, petiolate ; middle ones broad-ovate, crenate- dentate, ses- 

 sile ; upper ovate-lanceolate, entire ; flowers axillary, solitary, opposite. 

 /S. gracilis Nutt. S. parvijlora Muhl ? 



Shady rocks. N. Y. and Penn. W. to Miss, and Louis. May, June. %. — 

 Root fibrous. Stem 9 — 15 inches high, sometimes curved and decumbent at 

 base. Leaves strongly nerved. Flowers small, pale-blue. Nerved Skullcap. 



7. S. lateriflora Linn. : smoothish ; stem erect, much branched ; leaves 

 on long petioles, ovate-lanceolate, acuminate, coarsely serrate, rounded or 

 slightly cordate at base ; racemes axillary, leafy. 



Wet meadows. Can. to Car. W. to Oregon. July, Aug. '2|-. — Stem 1 — 2 

 feet high, much branched, with the angles roughish. Flowers small, blue, in 

 numerous leafy racemes. Some years since this plant was in great repute as a 

 cure for hydrophobia ; but like many other specifics, it has had its day. 



Mad-dog Skullcap. 



VI. NEPETE.E. Calyx oblique or somewhat 2-lipped. Corolla 2- 

 lipped ; the upper lip galeate. Stamens 4 ; the upper pair longer. 



17. LOPHANTHUS. Beiith.—Gmnt Hyssop. 

 (From the Greek Xofos, a crest, and avdos, a flower ; in allusion to the flowers.) 



Calyx tubular, 15-nerved, oblique, 5-tootlied, the upper teeth 

 somewhat longer. Corolla 2-lipped ; upper lip emarginately 

 bifid ; lower 3-lobed ; the middle lobe broader, crenate. Sta- 

 mens divaricate, upper pair longer. 



1. L. nepetoides Benth. : stem smooth, with the angles acute or winged ; 

 leaves opposite, ovate and lance-ovate, serrate-crenate, green on both sides, 



