Vol.. III.] 



2. Prunella laciniata Iy. Cut 

 leaved Self-heal. (Fig. 3099.) 



MINT FAMILY 



Prunella vulgaris var. laciniata L- Sp. PI. 600. 



1753- 

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



Brunella vulgaris var. pinnatifida Benth. in 

 DC. Prodr. 12:411. 1848. 



Similar to the preceding species, but the 

 stem leaves pinnatifid, lobed, or incised, the 

 basal ones often entire or merely crenulate. 



Vicinity of Washington, D. C. Adventive 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 10-nerved, 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-celled, 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 1' long, or more; leaves firm. 



Spike dense, many-flowered; leaf-serrations very acute. 1. 



Spike loose, few-flowered; leaf-serrations blunt. 2. 



Flowers 5" -7" long; leaves thin. 



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



Spike dense, I '-4' long; stem leafy. 4. 



P. Virginiana. 

 P. denticulata. 



P. intermedia. 

 P. parviflora. 



Physostegia Virginiana (L.) Benth. False Dragon-head. 

 Plant. Lion's Heart. (Fig. 3100. ) 



Obedient 



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

 Dracocephalum speciosum Sweet, Brit. Fl. 



Gard. pi. gj. 1825. 

 P. Virginiana 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 linear-lanceolate, acuminate at the apex, 

 sharply serrate or serrulate, narrowed at the 

 base, the upper all sessile, 2 / -5 / long, 2 // -7 // 

 wide, the lowest petioled; bracts lanceolate, 

 shorter than the calyx; spikes dense, becom- 

 ing 4 / -8 / 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. 



