ORDER GYMNOSPERMIA. 127 



corolla, almost like a funnel, with a straight and narrow 

 tube. The calyx is campanulate (externally bluish) ; 

 the stamens, as might be expected, nearly equal ; 

 and the stigma linear and recurved. This plant is 

 not uncommon, by way sides, in the middle and west- 

 ern states, and is covered with a somewhat viscid 

 pubescence of a strong and rather heavy, but not un- 

 pleasant, odor. 



The Catmint (Nepeta) has a dryish striated calyx ; 

 the tube of the corolla rather long, the intermediate 

 segment of the lower lip crenate, with the margin of 

 the orifice reflected. The stamina approach each 

 other. The strong peculiar odor of most of the 

 species of this genus is well known, particularly that 

 of the common kind (.IV. cataria), which renders it 

 very attractive to cats, and they often tear and devour 

 it with greediness. 



The Groundivy, or Glechoma, a trailing, prostrate 

 plant, with roundish, strong smelling leaves, and pretty 

 small, blue flowers, may be known, at once, from 

 other genera, by the disposition of its white anthers, 

 which approach each other in pairs, so as to form a 

 cross. It has also the upper lip of the corolla bifid. 



Horehound, or Marrubium, may easily be recog- 

 nised by its 10-ribbed, 10-toothed calyx; it has, be- 

 sides, the upper lip of the corolla narrow, straight, 

 and cleft. The common species by way sides, near 

 houses, has hoary, wrinkled, roundish-ovate, toothed 

 leaves. 



The Pycnanthemiim, or Mountain-mint, an Ameri- 

 can genus, may be known by having its small, pale 

 colored flowers disposed in heads, and surrounded by 

 an involucrum of many narrow bractes. The calyx 

 is tubular and striated ; the upper lip of the corolla 

 nearly entire ; the lower lip 3-cleft. The stamina 

 nearly equal and distant. In the 2d section the 



