MONOPETALOUS EXOGEKOUS PLANTS. 410 



simple or branched ; leaves remote, long-petioled, broadly 

 ovate, crenate, the floral ones lanceolate ; luhorls 1-several ; 

 calyx 8-tootlied ; corolla villous, scarlet. Waste grounds. 

 June-August. Stem l^-G*^ high; whorls 1-2' in diame- 

 ter ; corolla 1' long. 



STACHYS, L. Hedge-i^ettle. 

 Calyx tubular-bell-shaped, 5 or 10-nerved, 5-toothed, 

 the teeth equal, or the upper one larger, more or less spiny 

 (in our species), spreading in fruit; corolla hairy within, 

 2-lipped, the upper lip erect, the lower spreading, 3-lobed, 

 with the middle lobe much larger ; stamens 4, ascending ; 

 anthers 2-celled; nntlets not truncate. — Chiefly hairy or 

 hispid herbSj with few-flowered luhorls in terminal racemes. 



* Perennial. 



S. ASPERA, Michx. Stem erect, with the angles rough 

 with recurved bristly hairs, rarely smoothish ; leaves short- 

 petioled, ovate-oblong or ovate-lanceolate, acute, serrate, 

 rounded at the base, smooth, or sprinkled with hairs above, 

 the floral ones longer than the calyx ; toJiorls 6-10-flowered, 

 the lower ones distant ; calyx-teeth, spine-pointed. ( S. his- 

 pida, Pursh; S. tenuifolia,Willd.) Swamps. June-August. 

 Stem l^°-2° high; leaves 2-3' long; corolla purple. 



S. HYSSOPIFOLIA, Michx. Smooth or nearly so; stem 

 erect, slender; leaves sessile, lanceolate or linear, obtuse, 

 entire or sparingly serrate ; raceme short, of few 4-6-flow- 

 ered whorls; calyx smooth, with spiny spreading teeth, 

 ^-J as long as the smooth violet corolla. Wet pine-barrens. 

 June-August. Stem l°-li° high ; leaves l'-2' long. 



ISANTHUS, Michx. 



C«?;/.r bell-shaped, 10-nerved, 5-cleft; corolla hell-sha^edy 

 equally 5-lobed; stamens 4, incurved-ascending, exserted; 

 anthers 2-celled ; nutlets obovoid, impressed-reticulated, 



