GENUS 14. 



MINT FAMILY, 



2. Dracocephalum denticulatum Ait. Few- 

 flowered Lion's Heart. Fig. 3600. 



Prasium purpureum Walt. Fl. Car. 166. 1788? 



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



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



1878. 

 P. denticulata Britton, Mem. Torn Club 5: 284. 1894. 



Stem slender, ascending or erect, simple, or little 

 branched, i-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 i' long. 



In moist soil, Pennsylvania to Illinois, Florida and 

 Texas. June Aug. 



3. Dracocephalum intermedium Nutt. 

 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 : 



371- 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'-$' 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, i-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, i'-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"~7" long. 



In moist soil, Wisconsin and Minnesota to Ne- 

 braska, North Dakota, Saskatchewan, British Colum- 

 bia and Oregon. June-Aug. 



