Class XIV. Order I. 



An erect plant with fastigiate branches. Stem square, dow- 

 ny at the angles. Leaves opposite, rigid, very narrow, round- 

 ed at base, and tapering to a long, acute point. Under a magni- 

 fier they appear covered with fine, black dots. Flowers in nu- 

 merous small heads, mostly terminal. Taste like pennyroyal. 

 By fences and woods. July, August. Perennial. 



* 



180. PYCNANTHEMUM. 

 PYCNANTHEMUM INOANUM. Mich. Wild Basil. 



Stein pubescent ; leaves petioled, oval, acumi- 

 nate, serrate, white-downy ; heads compound, ter- 

 minal and lateral ; bractes setaceous. Mich. abr. 



Syn. CLIXOPODIUM INCANUM. L. 



. 



A white looking plant, covered with soft down. Stem one 

 or two feet high, covered with soft down, especially toward tlte 

 top. Leaves oval, pointed, with a few remote serratures on the 

 sides, soft and velvet-like, white underneath. Flowers on white, 

 branching footstalks, in lateral and terminal whorls or heads. 

 Bractes numerous, white, the inner ones setaceous. Corollas 

 projecting, pale, spotted with purple. Woods and mountains. 

 July, August.- Perennial. 



PYCNANTHEMUM ARISTATUM. Mich. Wild Basil. 



Whitish ; leaves lance-oval, somewhat serrate, 

 on short petioles ; whorls and terminal head ses- 

 sile ; bractes linear, awned. Mich. abr. 



Syn. NEPEfA VlRGINlCA. L. 



Stem erect, a foot or more in height, downy. Leaves op- 

 posite, ovate, acuminate, slightly serrate, dotted under a mag- 

 nifier, the upper ones hoary with white down. Each branch 

 has one or two downy, sessile whorls, and a terminal head. 

 Bractes acuminated with a sort of awn. Flowers small. Both 



