Flora of Denver. 41 



319. Salvia lanceoUta WILLD. From low and simple- 

 stemmed to tall and branching diffusely, corolla blue, small 

 but exceeding the calyx, which is persistent and becomes 

 brown when dry. Usually flowers and fruit on same plant at 

 the same time. Summer and fall. 



320. Monarda fistulosa L. (WILD BERGAMOT.) Sweet 

 scented, heads of large purple flowers at the top of the stem 

 with an involucre of green bracts. Along the Platt". Sum- 

 mer. 



321. Monarda citriodora CERV. (HORSE-MINT.) Stems 

 many from the root, flowers densely clustered in the upper 

 axils, bracts and calyx teeth having branching bristles that 

 are often purplish, corolla tube as long as the calyx. On -the 

 plains. Summer. 



322. Nepeta Cataria L. (CATNIP.) Introduced along the 

 Platte near Valverde. 



323. Dracocephalum parviflorum NUTT. (DRAGON-HEAD.) 

 Tall, branching from the base, flowers in a spike at the top of 

 the stems, bracts numerous, bristle-toothed, calyx two-lipped, 

 upper lip ovate-acuminate, lower 3-cleft, all bristle-tipped; co- 

 rolla small, lilac, almost concealed by the calyx and bracts. 

 Along the Platte. Summer. 



324 Scutellaria resinosa TORR. (SKULLCAP.) This has 

 slender running root stalks and many low stems, flowers in the 

 axils of the upper leaves, but sometimes blooming from the 

 base of the stem, large, deep blue, calyx large, inflated, whole 

 plant resinous. Common on the plains of North Denver on the 

 sandy hills. Spring and early summer. 



325. Scutellaria galericulata L. Taller, usually branching 

 above, leaves more scattered. This grows in wet places along 

 the Platte. Summer. 



326. Brunella vulgaris L. (SELF-HEAL.) Branching from 

 the root, the pairs of leaves distant, flowers in a spike at the 



