IWM. 157. l.V, 



ers in dense clusters; calyx-tube 15-ribbed. 5-lobed; upper lip of 



corolla narrow, -----____ Monarda 



M. flstulosa, Wild Brr^amot, H<irst-mint. Stem slightly villous, purple^pot- 

 ted; leaves ovate to lanceolate, serrate; calyx-tube slightly curve!, villous 

 in the throat; corolla lilac; involucre purplish. Hi<h sandy ground. Sum- 

 mer and Fall. 



M. punctata. Stem pubescent; leaves linear-oblong to lanceolate, serrate; calyx 

 not bearded in the throat; corolla yellowish, the lower lip dotted with brown; 

 involucre somewhat colored. Sandy soil. Summer and Fall. 

 6. Calyx-lobes 5. - - - _ - 7 



6. Calyx-lobes 10; — woolly herbs with flowers in dense, axillary clusters; 



calyx-tube 5-10 ribbed, lobes equal or alternately long and short; 

 stamens 4, included, - Marrubium, Hoarhound 



M. vulgare. Leaves oval or ovate, crenate; bracts subulate with hooked ends; 

 corolla small, white. Escaped from cultivation. Summer. 



7. Calyx-lobes not spiny; — flowers in terminal spike-like racemes; calyx 



campanulate. more or less inflated, tube 5-ribbed, lobes 5 un- 

 equal; stamens 4, anther-bearing. - Physostegia 

 P. Virginiana. Stem erect or trailing; leaves linear to lanceolate, sessile; flowers 

 in spike-like racemes; corolla bright pink, the lower lip denticulate, the 

 upper 3-Iobed. Low ground. Summer. 

 T, Calyx-lobes rigid or spiny; — flowers in clusters, the upper ones some- 

 times contiguous; calyx-tube 5-10 ribbed; lobes equal or nearly 

 so; stamens 4, ---------- Stachys 



S. Floridana, Hedge-nettle. More or less hirsute; leaves oblong to ovate, ser- 

 rate or dentate, with petioles nearly as long as the blades on lower part of 

 stem; corolla twice as long as the calyx, purple. Low sandy soil. Summer. 



8. Anthers 2-celled, the cells diverging; prostrate herbs; — flowers few 



or many, or solitary in the axils; calyx-tube usually 13-ribb^ 



lobes 5. nearly equal, sometimes almost 2-lipped; corolla small 



or minute; stamens 4. ------- Micromeria 



M. Brownei. Stems smooth or nearly so; leaves broadly-ovate, undulate or 

 crenulate; pedicel longer than the calyx; corolla purple. Riverbanks. Sum- 

 mer. 

 8. Anthers 2-celled, the cells diverging; pubescent tall herbs; — flowers 

 in dense axillary whorls; calyx 10-ribbed, 8-lobed, and awn- 

 tipped; corolla-tube curved, dilated above; stamens 4, - - Leonotis 



L. nepetaefolia. Softly pubescent; leaves ovate, crenace; corolla villous, scar- 

 let or orange-yellow; upper lip as long as the tube and longer than the 3- 

 cleft lower lip. Waste ground. Summer. 



8. Anthers 2-celled. the cells separated; shrubby plants; — flowers in 



dense, bracted. spike-like racemes or panicles; calyx delicate. 



lo-ribbed, 5-lobed. silky; corolla longer than the calyx, upper 



hp erect; stamens 4. the outer 2 longer than the inner 3 



exserted. --------- Pycnothymus 



P. rigidus Satureia rigida). Stems with many spreading branches; leaves small, 

 opposite, numerous, rigid, lanceolate, sharply revolute. sessile, with clu 

 of smaller leaves in the axils; racemes subglobose or cylmdric; corolla light 

 purple, with darker blotches on the middle lobe of the lower lip. minutely 

 pubescent. In sand and pine-land. Early Spring. 



9. Lowest lobe of corolla drooping, contracted at its base, the other 



