422 LABIAT^E. (MINT FAMILY.) 



# # Root perennial ; stem erect. 

 +- Leaves obscurely or not at all cordate , sessile or short-petioled. 



1. S. hyssopif61ia, Michx. Smooth and glabrous, or the nodes hirsute ; 

 stems slender (1 high); leaves linear-oblong or narrowly linear, sessile, ob- 

 scurely toothed toward the apex ; whorls 4 - 6-flowered, rather distant ; corolla 

 glabrous, twice or thrice the length of the triangular-awl-shaped spreading 

 calyx-teeth. Wet sandy places, Mass, to Mich., south to Fla. and Mo. Var. 

 AMBfouA, Gray, is stouter (1-2 high), sometimes with scattered retrorse 

 bristles on the angles of the stem, and with broader (3-6") serrulate leaves. 

 111. andKy. to Ga. 



2. S. palustris, L. Stem 4-angled (2-3 high), leafy, hirsute with 

 spreading or rejlexed hairs, especially on the angles; leaves sessile, or the 

 lower short-petioled, oblong- or ovate-lanceolate, crenately serrate, rounded at 

 base, downy or hairy-pubescent, obtusish (2-4' long), the upper floral ones 

 shorter than the nearly sessile calyx ; whorls 6 - 10-flowered, the upper crow ed 

 into an interrupted spike; calyx hispid; the lance-subulate teeth somewhat 

 spiny, half the length of the corolla, diverging in fruit ; upper lip of corolla 

 pubescent. Wet ground, Newf . to Peiin., westward across the continent. 



3. S. aspera, Michx. Taller; stem more commonly smooth on the sides, 

 the angles beset with stiff rejlexed bristles ; leaves hairy or smoothish, as in the 

 last, but nearly all distinctly petioled, the lower floral as long as the flowers ; 

 spike often slender and more interrupted; calyx mostly glabrous, the tube 

 rather narrower and the teeth more awl-shaped and spiny; corolla glabrous 

 throughout. (S. palustris, var. aspera, Gray.) Wet ground, common. 



Var. glabra, Gray. More slender, smooth and glabrous throughout, or 

 with few bristly hairs; leaves taper-pointed, more sharply toothed, mostly 

 rounded or truncate at the base, all more conspicuously petioled. (S. palustris, 

 var. glabra, Gray.) Western N. Y. to 111., and southward. 



i- *- Nearly all the leaves long-petioled and cordate. 



4. S. cordata, Riddell. Rather weak, hirsute, 2-3 high; leaves all 

 ovate- or oblong-cordate, acuminate, crenate (2-5' long), the floral mostly 

 minute; spikes slender, of numerous few-flowered clusters; calyx only 2" 

 long; corolla glabrous throughout (or nearly so), barely 5" long. (S. palus- 

 tris, var. cordata, Gray.) Thickets, S. Ohio to Iowa, south to Va., Tenn., 

 and Mo. 



ORDER 83. PLANTAGINACE^E. (PLANTAIN FAMILY.) 



Chiefly stemless herbs, with regular -merous spiked flowers, the stamens 

 inserted on the tube of the dry and membranaceous veinless monopetalous 

 corolla, alternate with its lobes ; chiefly represented by the two following 

 genera. 



1. PLANTAGO, Tourn. PLANTAIN. RIBWORT. 



Calyx of 4 imbricated persistent sepals, mostly with dry membranaceoua 

 margins. Corolla salver-form or rotate, withering on the pod, the border 4- 

 parted. Stamens 4, or rarely 2, in all or some flowers with long and weak 



