432 LABIATAE (MINT FAMILY) 



ing, 3-cleft. Stamens 2 and sometimes 2 sterile rudiments (staminodia) ; 

 the anther-cells divergent. Pungently sweet-aromatic. 



Hispid-pubescent annual 1. H. hispida. 



Cinereous-puberulent perennials. 



Corolla scarcely surpassing the calyx . . . . . . 2. H. ovata. 



Corolla nearly twice as long as the calyx 3. H. Drummondii. 



1. Hedeoma hispida Pursh, Fl. Am. Sept. 414. 1814. Stems 8-15 cm. 

 high: leaves linear, entire, thickish, nearly sessile, crowded, almost glabrous 

 but the margins hispid-ciliate : bracts rigid, about equaling the calyx: calyx 

 bilabiate, the teeth subequal, those of the lower lip narrower and more hispid 

 than those of the upper, about half the length of the oblong, gibbous, hispid 

 tube: corolla blue or purplish, about 6 mm. long: staminodia small or want- 

 ing. From Colorado northward to Northwest Territory. 



2. Hedeoma ovata A. Nels. Bull. Torr. Bot. Club 31: 245. 1904. Per- 

 ennial, the slender branches of the caudex widely divaricate from the sum- 

 mit of the taproot; stems slender, branched, 12-20 cm. high, puberulent with 

 recurved hairs: leaves entire, from broadly to narrowly oval, 7-15 mm. 

 long, glabrous above, nearly so below, crowded and more bract-like upward: 

 flowers small, cymulose in the axils, short-pediceled and bracteolate: calyx 

 about 5 mm. long, the lower teeth surpassing the upper, somewhat hispid- 

 pubescent on the tube and teeth: corolla inconspicuous, barely surpassing the 

 calyx, the upper lip 2-lobed: staminodia wanting. Type locality, Pole Creek, 

 Albany county, Wyoming. 



3. Hedeoma Drummondii Benth. Lab. Gen. & Sp. 368. 1834. Cinereous- 

 puberulent, 1-2 dm. high, copiously branched: leaves oblong to linear, ob- 

 tuse, subsessile or narrowed into a very short petiole: the subulate bracts 

 not longer than the pedicels: calyx hirsute or hispid, in age more or less 

 curved, not plainly bilabiate; the subulate setaceous teeth at length all con- 

 nivent, the lower nearly twice the length of the upper: corolla purple, 8-12 mm. 

 long, often nearly twice as long as the calyx. Dry slopes and canons; Wyo- 

 ming and southward to Texas and Mexico. 



16. LYCOPUS L. WATER HOARHOUND 



Low perennial herbs, glabrous or puberulent. Leaves sharply toothed or 

 pinnatifid; the floral ones similar and much longer than the dense, axillary 

 whorls of small white flowers. Calyx campanulate, naked in the throat, 

 4-5-toothed. Corolla campanulate, equally 4-lobed, scarcely longer than the 

 calyx. Perfect stamens 2, with parallel anther sacs; the upper pair sterile 

 or rudimentary. 



Some or all of the leaves incised 1. L. araericanus. 



Leaves serrate or dentate . . . . . . . . . 2. L. asper. 



1. Lycopus americanus Muhl. Bart. Fl. Phil. Prodr. 15. 1815. Green and 

 glabrous or puberulent, with angled stems 2-4 dm. high: leaves from broadly 

 to narrowly lanceolate, some or all of them incisely pinnatifid, 3-6 cm. long: 

 calyx with rigid triangular-subulate or cuspidate teeth: corolla small, scarcely 

 surpassing the calyx: the upper stamens sterile and thickened at their tips: 

 nutlets small, included in the calyx. L. sinuatus Ell. Throughout our range 

 and widely distributed elsewhere, nearly across the continent. 



2. Lycopus asper Greene, Pitt. 3: 339. 1898. Glabrate, puberulent or 

 even hirsute on the stoutish erect stem, 4-8 dm. high, acutely angled above: 

 leaves oblong-lanceolate, acute or acuminate, 5-10 cm. long, very sharply 

 and coarsely set-rate with triangular-subulate ascending teeth, sessile or 

 nearly so, coarsely punctate: calyx-teeth lanceolate-subulate, about as long as 

 the calyx-tube: corolla but little longer than the calyx: rudimentary stamens 

 with thickened tips. L. lucidus americanus Gray. From the Missouri west 

 to the sea. 



