380 LABIATE. Scutdlaria. 



S. brevifolia. Cinereous-puberulent throughout : stems numerous from a suffrutescent 

 base, rigid, a foot or less high, very leafy : leaves thickish, narrowly oblong, 6 to 8 lines 

 long by 2 or 3 wide, all subsessile ; the floral similar, gradually smaller : corolla soft- 

 pubescent, three-fourths inch long; lower lip rather longer than the upper: anthers short- 

 ciliate : nutlets granulate. S. integrifolia, var. breoifolia, Gray in Cat. Coll. Tex. Hall, no. 

 458. Dry banks, Dallas, Texas, E. Hall, Reverchon. 



H- -)-r Lips of the corolla about the length of the broad tube and throat. 



S. Floridana, Chapm. Obscurely puberulent : stems slender, a foot or more high, rather 

 remotely leafy and with some axillary fascicles: leaves very narrowly linear (8 to 12 lines 

 long, seldom a line wide), with somewhat revolute margins ; the lowest minute and scale- 

 like : raceme rather loose : corolla nearly inch long : anthers long-ciliate. Fl. 324. Pine- 

 barren swamps, Apalachicola, Florida. 



* * * Flowers solitary in the axils of cauline leaves, or some occasionally imperfectly racemose 

 through the reduction in size of the upper leaves of the stem or branches. 



-t Annuals, loosely branched from the base: corolla pubescent, half inch or less long: nutlets 

 muriculate. 



S. Cardiophylla, Engelm. & Gray. Puberulent, slender, a foot or two high, with 

 virgate branches : leaves cordate-ovate or deltoid-subcordate, mostly obtuse, thin, veiny ; 

 principal cauline inch long, coarsely crenate, slender-petioled ; floral gradually smaller and 

 less toothed, the uppermost entire and subsessile (3 lines long, barely exceeding the calyx) : 

 corolla slender, bine. PI. Lindh. i. 19; Benth. in DC. 1. c. 429. Open woods, Arkansas 

 and Texas. 



S. Drummondii, Benth. Villous-pubescent, a span or more high, soon diffuse, leafy : 

 leaves ovate or obovate-oblong, very obtuse, half inch or more long, contracted at base, 

 the lower into distinct petioles; floral subsessile and about equalling the flowers; all entire 

 or nearly so (rarely subcrenulate) : corolla violet purple or blue (3 to 5 lines long), com- 

 monly with the calyx villous-pubescent, at least when young ; lower lip longer than the 

 upper, violet-spotted. Lab. 441, & DC. Prodr. xii. 428. Damp or rich soil, Texas; 

 common. (Mex.) 



-1 -t Perennials, from a firm or ligneous stock, neither stoloniferous nor tuberiferous : nutlets 

 granulate. 



S. WYiglltii, Gray. A span or so high, many-stemmed in a tuft, minutely cinereous- 

 puberulent, very leafy: leaves ovate, oval, or spatulate-oblong, entire, subsessile, about 

 half an inch long; upper floral shorter than the flowers : corolla pubescent, half an inch 

 long, usually violet; lips nearly equal in length; tube rather slender. Proc. Am. Acad. 

 viii. 370. Texas, quite to the western borders, Wright, Lindheimer, E. Hull, &,c. Kansas, 

 Gordon, L. Watson, with a white-flowered variety. 



H -1 -f Perennials, completely herbaceous and fibrous-rooted, mostly producing filiform stolon- 

 like rootstocks : 



-H- These more or less mondiforni-tuberiferous. 



= Flower 2 to 4 lines long: leaves broadest at base and all but the lower sessile; primary veins 



prominent underneath. 



S. parvula, MicllX. Minutely (sometimes more conspicuously) pubescent, branching 

 from the base, commonly erect, 4 to 10 inches high : filiform subterranean shoots bearing 

 a long moniliform string of small tubers : leaves ovate or the uppermost ovate-lanceolate, 

 sessile by a truncate or slightly cordate base, about half inch long ; some of the lower with 

 one or two coarse teeth, the lowest slender-petioled : pedicels as long as the calyx : corolla 

 violet, pubescent, twice or thrice the length of the calyx : nutlets strongly muricate, girt 

 with a thickish ring or border, which is conspicuous when young. Fl. ii. 12 ; Hook. Exot. 

 t. 106. S. (intliii/iia, Nutt. Gen. ii. 37. Sandy banks, \V. New England and along the Great 

 Lakes to Wisconsin, South Florida, and Texas. 



Var. mollis, Gray. More spreading, softly pubescent throughout (the pubescence 

 somewhat viscid) : leaves larger, less firm. Sandy banks of the Mississippi, at Oquawka, 

 S. Illinois, &c., H. N. Patterson. A remarkable form, with somewhat the aspect of S. 

 Drummondii. 



= = Flower half or two-thirds inch long: leaves narrowed at base or petioled : plants depressed 

 or weak and diffuse. 



S. nana, Gray. Minutely cinereous-puberulent, 2 inches high, much branched: filiform 

 subterranean shoots copiously moniliform-tuberiferous : leaves crowded, from ovate to 



