90 



LABIATAE. 



[Vol. hi. 



2. Physostegia denticulata (Ait.) Britton. Few-flowered Lion's Heart. 



(Fig. 3101.) 



Praiium purpuretim Walt. Fl. Car. 166. 1788? 

 Drarocephaliim denliculalum Ait. Hort. Kew. 2: 317. 



1789. 

 Phxsosle^ia I'ir^iniana var. denticulata A. Gray, Syn. 



Fl. 2: Part I. 3S3. 1S78. 

 Phviostegia denticulata Britton Mem. Torr. Club. 5: 



284. 1S94. 



Stem slender, ascendiog or erect, simple, or 

 little branched, l°-2° high. Leaves firm or rather 

 thin, oblong, linear-oblong, or oblanceolatc, obtuse 

 or acute at the apex, narrowed at the base, crenu- 

 latc, obtusely dentate, or entire, I'-j' long, 2"-5" 

 wide, the upper sessile, the lower sleuder-peliolcd; 

 spike loosely few-sevcral-flowcred; bracts lanceo- 

 late, little longer than the fruiting pedicels; flower- 

 ing calyx oval-canipauulate, its Jeeth 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, Virginia to Florida and Te.\as. June- 

 Aug. 



3. Physostegia intermedia (Nutt.) A. 

 Gray. Slender Lion's Heart. (Fig. 3102.) 



Dracocephalum intermedium Nutt. Trans. Am. 



Phil. Soc. ( II. ) 5: 187. 183^-37. 

 Physoitcgia 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 liuear, acute or acuminate at the 

 apex, repand-denticulatc, little narrowed at the 

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

 long, 2"-4" wide; spikes very slender, remotely 

 many- flowered, 4'-S' long in fruit; lower bracts 

 often nearly as long as the campanulate calyx; 

 calyx-teeth acute, shorter than the tube; fruit- 

 ing calyx broadly oval, 2"-2>^" long; corolla 

 much dilated above, 5"-"" long. 



On prairies, western Kentucky (according to 

 Gray), Louisiana, Arkansas and Texas. May-July. 



4. Physostegia parviflora Xtitt. Purple 

 or Western Lion's Heart. (Fig. 3103.) 



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



12: 434. .\s synonym. 184S. 



Stem rather stout, usually simple, \°-^ high, 

 Leaves lanceolate, oblong-lanceolate, or ovate- 

 lanceolate, acute, acuminate or the lower ob- 

 tuse at the apex, sharply serrate or dentate, 

 somewhat narrowed at the base, all sessile or 

 the lowest petioled, 3'-4' long, 3"-lo" wide; 

 spikes densely several-many-flowered, i'-4' 

 long; bracts ovate or ovate-lanceolate, acute, 

 shorter than the calyx; flowering calyx cam- 

 panulate, its teeth ovate, obtuse or subacute, 

 about one-third as long as the tube; fruiting 

 calyx globose-oblong, 2"-3" long; corolla pur- 

 ple, 6" long. 



In moist soil, Minnesota to Nebraska, west to 

 British Columbia and Oregon. ]une-Aug. 



