Vol. III.] 



MINT FAMILY, 



2. Prunella laciniata L,. Cut- 

 leaved Self-heal. (Fig. 3099.) 



Prunella vulgaris var. laciniata L. Sp. PI. 6<x). 



1753- 

 Prunella laciniata L. Sp. PI. Ed. 2, 837. 1763. 



Brunella vulgaris var. pinnatifida Benth. in 

 DC. Prodr. 12:411. 1S48. 



Similar to the preceding species, but the 

 stem leaves piunatifid, lobed, or incised, the 

 basal ones often entire or merelj- crenulate. 



Vicinity of Washington. D. C. .'Vdventive or 

 fugitive from Europe. Regarded by many au- 

 thors as a variety of P. vulgaris, but the pinna- 

 tifid leaves appear to be a constant character. 

 Summer. 



13. PHYSOSTEGIA Benth. Lab. 

 Gen. & Sp. 504. 1834. 



Erect perennial glabrous or puberulent 

 herbs, with serrate dentate or entire leaves, 

 and large or middle-sized bractcd purple violet, pink or white flowers in terminal spikes, 

 or spike-like racemes. Calyx campanulate or oblong, membranous, swollen and remaining 

 open in fruit, faintly reticulate-veined and lo-nervcd, equally 5-toothed. Corolla much 

 longer than the calyx, its tube gradually much enlarged upward, its limb strongly 2-lipped; 

 upper lip concave, rounded, entire; lower lip spreading, 3-lobed, the middle lobe commonly 

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

 lower pair the longer; filaments pubescent; anthers all alike, 2-celle(l, the sacs nearly par- 

 allel, the margins of their valves commonly spinulose or denticulate. Ovary 4-parted. Nut- 

 lets ovoid-triquetrous, smooth. [Greek, bellows-covering, from the inflated fruiting calyx.] 



About 5 species, natives of North America, known as False Dragon-head or Lion's-heart. 

 Flowers i' long, or more; leaves firm. 



Spike dense, many-flowered; leaf-5errations very acute. i. P. Virgiriiana. 



Spike loose, few-flowered: leaf-serrations blunt. 2. P. denticulata. 



Flowers 3"-7" long; leaves thiu. 



Spike loose; 4' -8' long; leaves few and distant. 3. P. intermedia. 



Spike dense, i'-4' long; stem leafy. 4. P. parvijlora. 



Physostegia Virginiana (L. ) Benth. 

 Plant. Lion's Heart. 



False Dragon-head. 

 (Fig. 3100.) 



Obedient 



D. Virginianum L. Sp. PI. 594. 1753. 

 Vracorephalum speciosiim Sweet, Brit. Fl. 



Gard. pi. r/j. 1825. 

 P. rirginiana Benth. Lab.Gen. & Sp. 504. 1834. 



Stem erect or ascending, rather stout, 

 simple or branched above, i°-4° tall. 

 Leaves firm, lanceolate, oblong-lanceolate, 

 or liuear-lanceolatc, acuminate at the apex, 

 sharply serrate or serrulate, narrowed at the 

 base, the upper all sessile, 2^-5' long, t,"--]" 

 wide, the lowest petioled; bracts lanceolate, 

 shorter than the calyx; spikes dense, becom- 

 ing 4'-S' long in fruit, many-flowered; flow- 

 ering calyx campanulate or somewhat turbi- 

 nate, its teeth ovate, acute, about one-half as 

 long as the tube; fruiting calyx oblong, 4"- 

 5" long, the teeth much shorter than the 

 tube; corolla pale purple or rose, i' long or 

 more, often variegated with white, tempo- 

 rarily remaining in whatever position it is 

 placed. 



In moist soil, Quebec to the Northwest Ter- 

 ritory, south to Florida, Louisiana and Texas. 

 Perhaps escaped from gardens eastward. 

 July-Sept. 



