GENUS I4. 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': 383. 
1878. 
P. denticulata Britton, Mem. Torr. Club 5: 284. 1894. 
Stem slender, ascending or erect, simple, or little 
branched, 1°-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, 1-3’ 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 intermédium Nutt. 
Slender Lion’s Heart. Fig. 3601. 
Dracocephalum intermedium Nutt. Trans. Am. Phil. 
Soc. (IL) §: 287. 5893-37. 
Physostegia intermedia A. Gray, Proc. Am, Acad. 8: 
371. 1872: 
Stem very slender, usually quite simple, 1°-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, 2-3’ 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, 2-23” 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. Assynonym. 1848. A. Gray, Proc. Am. 
Acad. 8: 371. Not Dracocephalum parvifiorum 
Nutt. 
Stem rather stout, usually simple, 1°-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”-10” 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, 5’~-7” long. 
In moist soil, Wisconsin and Minnesota to Ne- 
braska, North Dakota, Saskatchewan, British Colum- 
bia and Oregon. June—-Aug. 
