i 



Genus 14. 



MINT FAMILY 



2. Dracocephalum denticulatum Ait. Few- 

 flowered Lion's Heart. Fig. 3600. 



Prasium purpureum Walt. Fl. Car. 166. 178S? 



Drac. denticulatum Ait. Hort. Kew. 2: 317. 1789- 



P. virginiana var. denticulata A. Gray, Syn. Fl. 2 1 : 383. 



1878. 

 P. denticulata Britton, Mem. Torr. Club 5: 2S4. 1S94. 



Stem slender, ascending or erect, simple, or little 

 branched, l-2 high. Leaves firm or rather thin, 

 oblong, linear-oblong, or oblanceolate, obtuse or 

 acute at the apex, narrowed at the base, crenulate, 

 obtusely dentate, or entire, I -3' long, 2"-6" wide, 

 the upper sessile, the lower slender-petioled; spike 

 loosely few-several-flowered ; bracts lanceolate, little 

 longer than the fruiting pedicels; flowering calyx 

 oval-campanulate, its teeth acute, about one-third 

 as long as the tube; fruiting calyx oblong, 3"-4" 

 long; corolla rose-pink, nearly or quite 1' long. 



In moist soil, Pennsylvania to Illinois, Florida and 

 Texas. June-Aug 



3. Dracocephalum intermedium Xutt. 

 Slender Lion's Heart. Fig. 3601. 



Dracocephalum intermedium Nutt. Trans. Am. Phil. 



Soc. (II.) 5: 187. 1833-37. 

 Physostegia intermedia A. Gray, Proc. Am. Acad. 8 : 



37i. 1872- 



Stem very slender, usually quite simple, i-3 

 high. Leaves usually few pairs, remote, thin, 

 mostly shorter than the internodes, narrowly 

 lanceolate or linear, acute or acuminate at the 

 apex, repand-denticulate, little narrowed at the 

 base, all sessile, or the lowest petioled, 2 7 -3' long, 

 2"~4" wide ; spikes very slender, remotely many- 

 flowered, 4'-8' long in fruit; lower bracts often 

 nearly "as long as the campanulate calyx ; calyx- 

 teeth acute, shorter than the tube ; fruiting calyx 

 broadly oval, 2"-2j" long; corolla much dilated 

 above, 5"- 7" long. 



On prairies, western Kentucky to Missouri, Louis- 

 iana, Arkansas and Texas. May-July. 



4. Dracocephalum Nuttallii Britton. Pur- 

 ple or Western Lion's Heart. 

 Fig. 3602. 



Physostegia parviflora Nutt. ; Benth. in DC. Prodr. 

 12: 434. As synonym. 1848. A. Gray, Proc. Am. 

 Acad. 8: 371. Not Dracocephalum parviflorum 

 Nutt. 



Stem rather stout, usually simple, l-3 high. 

 Leaves lanceolate, oblong-lanceolate, or ovate- 

 lanceolate, acute, acuminate, or the lower obtuse 

 at the apex, sharply serrate or dentate, somewhat 

 narrowed at the base, all sessile or the lowest 

 petioled, thin, 3'-4' long, 3"-io" wide; spikes 

 densely several-many-flowered, 1-4' long; bracts 

 ovate or ovate-lanceolate, acute, shorter than the 

 calyx ; flowering calyx campanulate, its teeth 

 ovate, obtuse or subacute, about one-third as long 

 as the tube ; fruiting calyx globose-oblong, 2"-3 ' 

 long ; corolla purple, S"~/ ' long- 

 In moist soil, Wisconsin and Minnesota to Ne- 

 braska. North Dakota, Saskatchewan, British Colum- 

 bia and Oregon. June- Aug. 



