28 DIANDRIA. MONOGYNIA. bALviA. 



on the veins. Spikes naked ; whorls remote. Calyx pubes- 

 cent, 3-cleft; segments short, ovale. Flowers blue, viscous, 

 punctate ; upper' lip arched ; lower lip S-lobed. 

 Hab. In New-Jersey, ^fu/z/ender^-. June, y.s.tnherb. 



MUHLENB. 



2. S. lyrata L.: radical leaves lyrate-sinuate ; stem 

 nearly leafless, retrorsely hairy ; upper lip of the corolla very 

 short. Willd. Spec. I. p. 1:28. Vahl Enum. 1, p. 257. 

 Walt, Car. p. 65. jMi c h. Fl. 1. p. 14. Pursh Fl. I. 

 p. 20. Elliott Sk. \. y.Z\. Roem. ^ Schult. I. 

 p! 257. S» corollarum labio superiore breviore, &c. Gro n, 

 Virg. 8. 

 Root perennial. Stem about a foot high, quadrangular, densely 

 covered with reflected hairs, branched a little towards the sum- 

 mit. Leaves mostly crowded about the root, 6 — 8 inches long, 

 hairy, more or less lyrate or pinnatitid, very obtuse ; under 

 surface strongly veined with red. Flowers in whorls of about 

 six. Upper lip of the calyx broad, truncate, 3-toothed ; the 

 lower 2.c!elt. Corolla about 3-fourths of an inch long, blue ; 

 tube twice as long as tlie calyx ; upper lip oval, eniarginate ; 

 the lower lip with obtuse lateral segments, spotted at the base; 

 middle segment much larger, cordate. Filaments inserted 

 into the upper part of the tube of the corolla, bearing a trans- 

 verse footstalk, with a 1 -celled antker^x. each extremity. Style 

 filiform, longei than the corolla; stigma 2-cleft. 

 Hab. In fields and borders of woods ; New- Jersey and Penn- 

 sylvania. June. Cancer-weed. 



3. S. Claxjioni EH-: leaves cordate-ovate, sinuate, 

 toothed, rugose -, teeth of the upper lip of the calyx conni- 

 vent. E / / i i < S/c. 1. p. 32. S. verbenaca M uh I. Cat^ 

 p. 3. C I ay t. Virg. p. 5. 



Root thick, almost tuberous, perennial. Stem herbaceous, erect, 

 nearly a foot high. Leaves ovate and cordate, lanceolate and 

 pinnatitid, the segments toothed, rug(;se, pubescent on the 

 veins and margins. Flowers in 6-flowered whorls. Bracts 2 at 

 the base of each whorl, cordate-ovate, acuminate, toothed, pu- 

 Ijescent. Calyx somewhat canipanulate, bilabiate, hispid along 

 the veins and margins; upper lip 3-toothed, teeth connivent ; 

 the lower lip longer, 2-cleft ; the segments acuminate, mucro- 

 nate. Transverse filament bearing an anther at each extre- 

 mity, ./^ni/jcrs nearly black. Eil. 

 Hab. In Pennsylvania. June— October. fo and 2f, flowers 

 violet. Muhlenberg. Appears to be a distinct species 

 from the S, verbenaca of Lin. 



21,C0LLINS0NIA. L. 



Calyx bilabiate ; upper lip 3-toothed. Corolla un- 

 equal, somewhat campanulate, unequally 5-lobed; 



