i 3 6 



LABIATAE. 



VOL. III. 



i. Hedeoma pulegioides (L.) Pers. American Pennyroyal. Fig. 3647. 



Melissa pulegioides L. Sp. PI. 593. 1753. 

 Cunila pulegioides L. Sp. PI. Ed. 2, 30. 1762. 

 Hedeoma pulegioides Pers. Syn.- 2: 131. 1807. 



Annual ; stem very slender, erect, much branched, 

 finely soft-pubescent, 6'-i8' high, the branches ascend- 

 ing. Leaves ovate to obovate-oblong, petioled, sparingly 

 serrate, mostly obtuse at the apex and narrowed at the 

 base, glabrous, or sparingly pubescent, thin, i'-ii' long, 

 2 "-8" wide, the upper smaller; clusters few-flowered, 

 axillary, rather loose; pedicels pubescent, shorter than 

 or equalling the calyx ; calyx pubescent, gibbous, oblong- 

 ovoid in fruit, its 3 upper teeth triangular, acute, not 

 exceeding the 2 subulate hispid lower ones; corolla 

 bluish-purple, about 3" long; rudimentary stamens 

 manifest, capitate at the summit, or rarely anther- 

 bearing. 



In dry fields, Cape Breton Island to Ontario and Minne- 

 sota, Florida, Alabama, Arkansas and Nebraska. Also 

 called tick-weed and squaw-mint. July-Sept. 



2. Hedeoma hispida Pursh. Rojigh Pennyroyal. Fig. 3648. 



Hedeoma hispida Pursh, Fl. Am. Sept. 414. 1814. 

 Hedeoma hirta Nutt. Gen. i: 16. 1818. 



Annual ; stem erect, branched, slender, 3'-8' high, 

 pubescent, the branches erect-ascending, very leafy 

 and copiously flowered. Leaves linear, entire, firm, 

 sessile, or the lower short-petioled, blunt or subacute 

 at the apex, narrowed at the base, more or less 

 hispid-ciliate but otherwise mostly glabrous, i'-i' 

 long, about i" wide, the lower much shorter and 

 smaller ; clusters axillary, numerous, crowded, sev- 

 eral-flowered ; pedicels pubescent, shorter than the 

 calyx; bracts subulate, very hispid, about equalling 

 the calyx ; calyx oblong, gibbous, hispid, its teeth 

 all subulate, nearly equal in length, upwardly curved 

 in fruit, about one-half as long as the tube, the 2 

 lower ones somewhat narrower and more hispid 

 than the upper; corolla about 3" long, bluish-purple; 

 sterile stamens rudimentary or none. 



On dry plains, Ontario and New York to Saskatche- 

 wan, Illinois, Louisiana, Arkansas and Colorado. May-'Aug. 



3. Hedeoma longiflora Rydb. Long-flowered 

 Pennyroyal. Fig. 3649. 



Hedeoma longiflora Rydb. Bull. Torr. Club 36: 685. 1909. 



Perennial from a woody base, with an ashy down 

 nearly all over; stems much branched, slender, erect, 

 6'- 1 8 high, the branches ascending. Leaves oblong or 

 linear-oblong, entire, short-petioled or sessile, obtuse at 

 the apex, narrowed at the base, spreading, 5"-io" long, 

 i"-2i" wide, the lowest shorter; clusters axillary, 

 loosely few-flowered; pedicels puberulent, about one- 

 half as long as the calyx and equalling or longer than 

 the subulate bracts; calyx oblong, hirsute, slightly 

 gibbous, its teeth all subulate, upwardly curved and 

 connivent in fruit, the 2 lower nearly twice as long 

 as the 3 upper; corolla purple, 4-6 long; sterile 

 stamens rudimentary or none. 



In dry soil, South Dakota to Nebraska, Kansas and 

 Texas. Included, in our first edition, in H. Drummondii 

 Benth. of the Southwest. April-Aug. 



