698 



LABIATAE (MINT FAMILY) 



the small slender bluish corolla. — Rocky or gravelly 

 calcareous soil, chiefly in recent clearings, e. Que. to 

 Yukon, southw. to n. and w. N. Y., Mich., Wise, la., 

 N. Mex., and Ariz.; occasionally adventive in N. E 

 June- Aug. Fig. 892. 



11. PRUNELLA L. Self-heal 



Calyx tubular-bell-shaped, somewhat 10-nerved, 

 naked in the throat, closed in fruit ; upper lip broad, 

 truncate. Corolla ascending, slightly contracted at the 

 throat and dilated at the lower side just beneath it, 

 2-lipped ; upper lip erect, arched, entire ; the lower 

 reflexed-spreading, 3-cleft, its lateral lobes oblong, the 

 middle one rounded, concave, denticulate. 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 S-flowered clusters of flowers sessile in the axils 

 of round and bract-like membranaceous floral leaves, imbricated in a close spike 

 or head. (Name said to be from the German Brdune^ a disease of the throat, 

 for which this plant was a reputed remedy. Often written Brunella^ which 

 was a pre-Linnean form.) 



L P. vulgaris L. (Heal-all, Carpenter-weed.) Leaves ovate-oblong, 

 entire or toothed, petioled, hairy or smoothish ; corolla violet or flesh-color, 

 rarely white, not twice the length of the purplish calyx. — Woods and fields, 

 Nfd. to Fla. , westw. across the continent. June-Sept. (Eu.) Var. laciniXta L. 

 Some upper leaves tending to be pinnatifid. (P. laciniata L.) — Said to be 

 introd. near Washington, D. C. (Adv. from Eu.) 



892. D. parviflorum. 

 Inflorescence x i/^. 

 Fruiting calyx x 2. 



12. PHYSOSTEGIA Benth. False Dragon Head 



Calyx obscurely 10-nerved, short-tubular or bell-shaped, more or less enlarged 

 and slightly inflated in fruit. Corolla funnel-form, with a nnich inflated throat, 

 2-lipped ; upper lip erect, nearly entire ; the lower 3-parted, spreading, small, its 

 middle lobe larger, broad and rounded, notched. — 

 Smooth perennials, with upright wand-like stems, 

 and sessile lanceolate or oblong mostly serrate leaves. 

 Flowers large and showy, rose or flesh-color varie- 

 gated ^^^th purple, opposite, crowded in simple or 

 panicled terminal leafless spikes. (Name from (pvaa^ 

 a bladder^ and a-T^yi], a covering, in allusion to the 

 calyx, which is at length somewliat inflated.) 



* Stem conspicuously leafy up to the inflorescence. 



1. P. virginiana (L.) Benth. Stem 0.5-1.8 m. 

 high, terminated by a simple virgate spike or several 

 panicled spikes ; leaves thickish, mostly sharply 

 serrate ; calyx tuhular-campanulate, its teeth half 

 the length of the tube, acuminate, at length acerose- 

 tipped; corolla 1.8-2.3 cm. long. — Wet grounds, 

 from w. Que. westw. and southw. ; frecjuently 

 escaped from cultivation in e. N. E. June-Sept. 

 Fig. 893. 



P. parvifl5ra Nutt. Stem 2-0 dm. high, simple 

 to the inflorescence; leaves thin, lanceolate, den- 

 ticulate to serrate ; s])ikes short and dense ; calyX' 



teeth short and hhint ; corolla 1-1.5 cm. long. — 8!>.3. P. rlrfrfniana. 



Wet banks, Wise, to Sask., N. Dak., and westw. Louf and bit of spike x%, 



July-Sept Antlier X 3. 



