742 LAMIACEAE 



Anther-sacs not transversely 2-valved. 

 Nutlets 3-sided, truncate above. 



Calyx-teeth awn-pointed, spreading. 



13. Leonxirus. 

 Calyx-teeth not awn-pointed. 



14. Lamium. 

 Nutlets ovoid, nearly terete, rounded above. 



15. Stachys. 

 Anther-sacs transversely 2-valved. 16. Galeopsis. 



Anther-bearing stamens 2. 



Connective of the anthers very long, articulated to the filaments, 



bearing a perfect anther at the ascending end and a reduced 



one or none at the other; calyx 2-Lipped. 



Upper Up of the corolla erect, entire or emarginate; lower por- 



• tion of the connective either dilated and naked or with 



a small anther. 



Inflorescence head-like; calyx-teeth aristate; lower portion 



of the connective anther-bearing. 17. Pycnosphace. 

 Inflorescence raceme or spike-Uke; calyx-teeth not aristate; 

 lower portion of the connective not anther-bearing. 



IS. Salvl\. 

 Upper lip of the corolla spreading, 2-lobed; lower portion of the 

 connective a mere tooth or lacking; flowers verticillate- 

 glomerate. 19. Audibertell.\. 



Connective of the anther short; anther-cells confluent; calyx equally 

 5-toothed. 20. MoN.\RDA. 



Upper lip of the corolla flat. 



Stamens curved, often converging. 

 Calyx regularly 5-toothed. 



Anther-bearing stamens 2. 21. Poliomintha. 



Anther-bearing stamens 4. 25. MiCROMERlA. 



Calyx 2-lipped or irreg\ilarly 5-toothed. 



Anther-bearing stamens 2. 22. Hedeoma. 



Anther-bearing stamens 4. 23. Clinopodium. 



Stamens straight, distant and diverging; calyx almost regularly 5- 

 toothed; anther-bearing stamens 4. 24. Madronella. 



CoroUa nearly regular, 4-5-toothed. 



Anther-bearing stamens 2. 26. Ltcopus. 



Anther-bearing stamens 4. 27. Mentha. 



1. TEUCRIUM (Tourn.) L. Germander, Wood Sage. 



Perennial caidescent herbs, rarely shrubs. Leaves toothed. Flowers per- 

 fect, in raceme-like inflorescence. Calyx campanulate, 10-ribbed; lobes 5, un- 

 equal. Corolla purplish, pink, or white; upper lip very short; lower lip 3-lobed, 

 the middle lobe elongate. Stamens 4, inserted between the lobes of the upper 

 lip, the anterior pair the longer; anther-sacs divergent, confluent at the base. 



1. T. occidentale A. Gray. Perennial, with a rootstock; stem 3-8 dm. high, 

 villous-hirsute ; leaf -blades ovate-oblong, oblong, or lanceolate, 4-9 cm. long, 

 sharply serrate, strigose above, paler and softly villous beneath; caly.x 5-6 mm. 

 long, viscid-villous, often purplish; corolla pur])lish, 8-10 mm. long. Thickets 

 and wet grounds: Ont. — Pa.— N.M. — CaKf. — B.C. Plain — Suhrnont. Je-Au. 



2. MELOSMON Raf. 



Perennial or annual herbs. Leaves opposite, incised or parted. Flowers 

 sohtary in the axils of the leaves. Calyx-tube very short, 10-ribbed; lobes 5, 

 equal or nearly so. Corolla blue, hlac, or white; upper lip small; lower hp 3- 

 lobed, with the middle lobe the longer. Stamens 4, as in Teucrium. 



1. M. laciniatum (Torr.) Small. Perennial, with a woody root and short 

 cespitose caudex; stems 1-2 dm. high, glabrous or nearly so; leaf-blades pin- 

 nately 3-7-parted, into linear divisions, which are sometimes again lobed; calyx 

 10-12 mm. long; lobes linear-subulate, acuminate; corolla pale blue or lilac, 1.5-2 

 cm. long. Plains: Kans. — ^Tex. — Ariz. — Colo. Son. My-Au. 



3. TRICHOSTEMA L. Blue Curls. 



Annual or perennial herljs, rarely shrubby. Leaves rather narrow, entire or 

 merely repand. Flowers perfect, in axillary cymes or panicles. Calyx cam- 

 panulate, with short tube; lobes 5, unequal. Corolla blue, i)urple, pink, or 

 white, slightl}' irregular. Stamens 4, rhdymous, cons])icuously exserted; fila- 

 ments curved, the anterior pair the longer and spirally curled in bud; anther- 

 sacs divergent. Nutlets reticulate. , 



