746 LAMIACEAE 



3-lobed, with broad middle lobe. Stamens 4, but 2 sterile^ fertile stamens with 

 forked filaments, one prong bearing the 2-celled anthers. Nutlets smooth. 



1. P. vulgaris L. Stem procumbent or ascending or erect, 0.5-5 dm. high; 

 leaf -blades ovate, oblong, or lanceolate, entire or crenate, 2-10 cm. long; spike 

 terminal, very dense, 1-3 cm. long in flower, or 5-10 cm. in fruit; bracts broadly 

 ovate-orbicular, cuspidate; corolla violet or purple, 8-12 mm. long. Woods and 

 wet places among bushes: Newf. — Fla. — Calif. ^B.C; nat. from Eurasia. 

 Plain — Mont. My-0. 



12. DRACOCEPHALUM (Tourn.) L. False Dragon-head. 



Perennial herbs, with mostly simple stems. Leaves opposite, glabrous, 

 rather narrow, usually toothed. Calyx campanulate, 5-ribbed,"more or less 

 inflated; lobes 5, nearly equal. Corolla purple, pink, or white, 2-Iipped; tube 

 dilated upwards; upper lip entire; lower lip 3-Iobed, with the middle lobe emar- 

 ginate. Stamens 4, all fertile; anthers 2-celled; sacs parallel. Nutlets smo-th, 

 3-angled. [Physostegia Benth.] 



1. D. Nuttallii Britton. Stem simple, 3-10 dm. high, glabrous; leaves 

 lanceolate, oblong, or linear, dentate, the upper sessile, 7-10 cm. long; spike 2-10 

 cm. long; calyx campanulate, with ovate, obtuse teeth; corolla purple, about 1 

 cm. long. Physostegia parvijlora Nutt. Banks of streams and among bushes: 

 Sask.— Minn.^Colo.— Ore.— B.C. Plain— Submont. Jl-Au. 



r 



13. LEONURUS L. Motherwort, 



Annual or perennial caulescent herbs. Leaves opposite, toothed, or pal- 

 mately cleft or parted. Flowers perfect, irregular, in dense axiUary clusters. 

 Calyx tubular-campanulate, 5-ribbed; lobes 5, nearly equal, subulate or a^Ti- 

 tipped. Corolla white or pink, 2-lipped; upper lip erect, nearly flat; lower hp 

 spreading, 3-lobed; middle lobe broad, truncate, or notched. Stamens 4, all 

 fertfle; anthers 2-celled; sacs mostly parallel. Nutlets smooth, 3-angIed. 



1. L, Cardiaca L. Perennial; stem erect, 3-10 dm. high, strigose-puberu- 

 lent; leaf-blades 2-10 cm. long, palmately 3-5-cleft, with lanceolate, more or 

 less acuminate, entire or toothed lobes; calyx 5-angled; lobes spinulosc; coroUa 

 pale purple or white, villous without, 9-10 mm. long. Waste places: N.S.— N.C 

 — Tex.— Utah. — Mont. Plain — Submont, Je-Au. 



14, LAMIUM L. Dead Nettle, Henbit, 



Annual or perennial caulescent herbs, with branched stems. Leaves opposite^ 

 petioled, usually broad, toothed or incised. Flowers perfect, irregular, in remote 

 axiUary clusters. Calyx campanulate, 5-nerved; lobes 5, equal or the upper 

 somewhat longer. Corolla purple, blue, or white, 2-hpped; upper 11??/*^^^' 

 concave, entire; lower lip 3-lobed; lateral lobes narrow, the middle one dilates 

 and notched. Stamens 4, all fertile; anthers 2-celled; sacs divergent. Nutlets 

 smooth or tuberculate. 



1. L. amplexicaule L. Annual or biennial; stem slender, weak, branched 



from the base and lower axils, usually decumbent, 1-5 dm. long, glabrous; leai- 

 KlaHps r»rKir>iil*iT' /^/M^rlo+rt ^y ^*^r.;f-^^^«^ 1 A «r« u*.-^«ri ^..^nofin +liti 11 nHftr sessiie 



1^ 



mm. 



long; middle lobe of the lower lip spotted. Waste places and cultivated grouna. 

 N.B.—Fla.^Utah— Calif.— B.C.; adv. from Eu. 



15. STlCHYS (Tourn.) L. Hedge Nettl 



Annual c 

 petioled and 

 mate, forming 



Leaves 



/ 



campanulate. 5-10-nDDea, 'J'^"^"^; 



notched; lower 



Corolla purple, pink, or white, 2-lipped; upper lip erect, entire or notched; Knver 

 lip spreading, 3-lobed; middle lobe largest, often 2-lobed. Stamens 4; ^ntners 

 all fertile, 2-celled; anther-sacs divergent or parallel; filaments naked. INutiei 



trtmcate 



