LABIATE. (MINT FAMILY.; 313 



broadly ovate, heart-shaped, crenate, tliin ; the floral sessile, gradually reduced 

 to bracts, each with a single sessile flower. Corolla l' long, yellowish-white. 



24. PHYSOSTEGIA, Benth. FALSB DBAGON-HEAJ>. 



Calyx nearly equally 5-toothed, obscurely 10-nerved, shortaubular or bell- 

 shaped, enlarged, and more or less inflated in fruit. Corolla funnel-form with a 

 much inflated throat, 2-lipped ; the upper lip rather erect, concave, nearly 

 entire ; the lower 3-partcd, spreading, small : its middle lobe larger, broad and 

 rounded, notched. Stamens 4, ascending under the upper lip : anthers approxi- 

 mate; the cells parallel. Perennial smooth herbs, with upright wand-liko 

 stems, and sessile lanceolate or oblong mostly serrate leaves. Flowers large 

 and showy, rose or flesh-color variegated with purple, opposite, crowded in sim- 

 ple or panicled terminal leafless spikes. (Name from <{)o-a, a bladder, and <rreya>, 

 to cover, on account of the inflated corolla and fruiting calyx.) 



1. P. Virginiana, Benth. (Dracocephalum Virginianum, L., &c.) 

 Low or wet banks of streams, W. New York- to Wisconsin and southward. 

 July -Sept. Varies from 1- 4 high, stout or slender; the leaves from ob- 

 long-obovate (the lower) to narrowly lanceolate, and from very sharply toothed 

 to nearly entire ; the flowers either crowded, imbricated, or scattered ; the in- 

 flated fruiting calyx varying from obovate or ovate to globular ; the corolla from 

 6" or 7" to 12" long : no definite marks are yet found for distinguishing two or 

 more species. 



25. BRUNEL,L,A, Tourn. (Prunella, L.) SELF-HEAL. 



Calyx tubular-bell-shaped, somewhat 10-nerved and reticulated- veiny, flattened 

 on the upper side, naked in the throat, closed in fruit, 2-lipped ; the upper lip 

 broad and flat, truncate, with 3 short teeth ; the lower 2-cleft. Corolla ascend- 

 ing, slightly contracted at the throat, and dilated at the lower side just beneath it, 

 2-lipped ; the upper lip erect, arched, entire ; the lower reflexed-spreading, 3-cleft ; 

 its lateral lobes oblong ; the middle one rounded, concave, crenulate. Stamens 

 4, ascending under the upper lip : filaments 2-toothed at the apex, the lower 

 tooth bearing the anther. Anthers approximate in pairs, their cells diverging. 

 Low perennials, with nearly simple stems, and 3-flowered clusters of flowers 

 sessile in the axils of round and bract-like membranaceous floral leaves, imbri- 

 cated in a close spike or head. (Name said to be taken from the German braune, 

 a disease of the throat, for which this plant was a reputed remedy.) 



1. B. vulgaris, L. (COJIMON SELF-HEAL or HEAL-ALL.) Leaves 

 ovate-oblong, entire or toothed, petioled, hairy or smoothish ; corolla (violet or 

 flesh-color) not twice the length of the purplish calyx. Woods and fields; 

 common. June Sept (Eu.) 



26. SCUTEL.L.ARIA, L. SKULLCAP. 



Calyx bell-shaped in flower, 2-lipped ; the lips entire, closed in fruit, the upper 

 with a helmet-like at length concave and enlarged appendage oh the back (the 

 upper sepal) ; calyx splitting to the base at maturity, the upper lip usually fall- 



