104 Spring Flora of Ohio. 



4. Genus PRU-NEL'-LA. (/y/v/;/^7/(7.) — Calyx tubular bell-shaped, 

 somewhat lU-uerved and reticulated veiny, flattened on the upper side; 

 upper lip broad and flat, truncate, with .'i short teeth, the lower 'i-cleft; 

 corolla '2-lipped, upper lip erect, arched, entire; the filaments "i-toothed 

 at the apex, the lower tooth bearincr the anther. 



Pru-nel'-la vul-ga'-ris L. Common Self-heal or Heal-all. — Stems nearly 

 sim])le, flowers in a close spike or head. 



•'i. Genus SY-NAN'-DRA. — Cahx bell-shaped, inflated, membranous, 

 irregularly veiny, almost equally 4-toothed; corolla with a long tube, 

 much expanded above and at the throat. 



Sy-nan'-dra his-pid'-u-la (Mx.) Britt. [S. grandijiora Nutt.) Synan- 

 dra. — Corolla XYz in. long, }-ellowish white; leaves broadly ovate, cor- 

 date, crenate. 



(). Genus LA'-MI-UIVI. — Calyx with 5, nearly equal teeth; corolla 

 dilated at the throat; upper lip arched, narrowed at the base; middle 

 lobe of the lower lip notched, contracted as if stalked at the base, the 

 lateral ones small ; low^est leaves small and long-petioled, the middle 

 ones cordate and doubly-toothed. 



A. Loii' : flowers small, pnrplr, i>i friv zvhorU or heads. 



La'-mi-um am-plex-i-cau'-le L. Dead Nettle. — Leaves deeply crenate- 

 toothed or cut, the upper ones clasping. 



La'-mi-um pur-pu'-re-um L. Dead Nettle. — Leaves crenate-toothed, 

 all petioled. 



.\. Taller: flozeers larger, lit se-eeral axillary whorls. 



La'-mi-um al'-bum L. Dead Nettle. — Corolla white, the tube curved 

 upward, obliquely contracted near the base, a ring of hairs inside. 



La'-mi-um mac-u-la'-tum L. Dead Nettle. — Like the last but flowers 

 purplish, the ring of hairs transverse instead of oblique. 



LXXVIL Order SO-LA-NA'-CE-/E. NIGHTSHADE FAMILY. — Com- 

 monly rank-scented, flowers perfect, regular, ovary superior, 2-celled, 

 seeds numerous. 



Corolla fiuniel-forni or tiibuL-ir, anthers opening' lengthwise.... Lyeiinii. 1 

 Corolla wheel-shaped, anthers opening at tlie apex ^olaiiiiiii. 2 



