VERBENACE^ — LABIATE 117 



Low pubescent perennials with alternate entire leaves and small 

 blue flowers often in one-sided bractless racemes. 



1. M. alpestris, Schmidt. 



Perennial, slender, tufted, ascending, 4-8 in. high, softly pubescent; 

 leaves oblong to lanceolate; racemes bractless when fully matured, densely 

 flowered; flowers blue. (M. sylvatica, var. alpestris, Koch.) Rocky Mt. 

 foothills. 



LXXIII. VERBENACEiE (Vervain Family). 



Herbs with opposite leaves^ somewhat irregular flowers and didyn- 

 amous stamens. Not unlike the Labiatese, except that the ovary 

 is not 4-lobed and the plant is not aromatic. Mostly tropical. 



1. VERBENA. Vervain. 



Calyx 5-toothed, one usually short; corolla tubular or salver- 

 shaped, unequally 6-cleft; stamens 4, didynamous, included; 

 style simple; stigmas 1 or 2; fruit composed of 2 carpels, each of 2 

 ovaries which separate into 4 nutlets. 



1. V. hastata, L. Blue Vervain. 



Tall; leaves lanceolate, or the lower lobed; flowers blue, in long, slender, 

 panicled spikes. Damp ground, Man. 



LXXIV. LABIAT-ffi: (Mint Family). 



Herbs with square stems, opposite leaves, two-lipped corolla, 

 stamens either 2 or in 2 groups, and a deeply 4-lobed ovary forming 

 4 nutlets in fruit. The foliage is frequently glandular, giving to 

 many members of the family a pleasing aromatic odor. 



1. TEtrCRIUM. 



Calyx 5-toothed; corolla apparently without the upper lip on 

 account of a deep cleft in the upper side, which makes the two lobes 

 on each side of it seem to join with the large lower lobe to form the 

 lower lip; stamens 4, exserted from the cleft in the corolla; style 

 2-cleft. Slender herbs. 



1. T. canadense, L. 



Somewhat slender, 1-3 ft. high, more or less pubescent, with a rather dense 

 spike of pink or purplish flowers. Rich low land; Man.-Alta. 



