BIDYi^'AMIA. G-YMNO^PEKMTA. 57 



-Flowers verticillate, imbricately spiked, bractes of the 

 Verticilii large and cUiate. 



Species. 1. P. vulgaris. ^. pennsylvanica. A mere 

 variety, of the preceding, which is certainly an introduced 

 plant, never appearing far beyond the precincts of habita- 

 tions. 



A small European genus. 



416. SCUTELLxiRIA. L. (Skull-capO 



Margin of the Calix entire, after flowering 

 closed with a gaieatc lid. Tube of the corolla 

 elongated. 



Herbaceous; flowers solitary, axillary, naked, or in ter- 

 minal or axillary bracteate racemes, bractes 1-flowered. 

 (Seeds granularly tuberculate.) 



f Floxvevs axillariiy solitary. 



Species. l.S. galericidala. Branching; leaves cordate- 

 lanceolate, crenate, under side pulverulently pubescent, 

 paler; fiovv^ers axillary. Hae. On the margins of swamps. 

 New Jersey, common. Exclude the synonym ofPursh- 

 2. p. 412. 2. parvuhi. 3. * gracilis. Stem mostly sim- 

 ple; leaves remote, broad-ovate, dentate, smooth and 

 sessile, scabrous on the margin, upper ones smaller, en- 

 tire; flowers axillary. Hab. In thickets on the margin 

 of the Schuylkill, near Philadelphia. S. galericulata? 

 Ph. Obs. Perennial. Stem 12 to 18 inches high, slen- 

 der, erect, and seldom branched; leaves 10 to 12 lines 

 long, and nearly the same in breadth, lower ones obtuse, 

 dentures remote, under side prominently veined; flowers 

 uncommonly small, pale blue. 4 * ambigua. Low, sub- 

 decumbent and divaricately branclied; leaves sessile, 

 ovate, remotely and rarely serrate, subhirsute above; flow- 

 ers very small, axillary. Hae. In dry and open forests, 

 ■Ohio. The habit of this small species is very diflxjrent 

 from that of the preceding, yet at the same time tliey 

 are closely allied. Obs. Perennial. Stem 4 to 6 inches 

 high, smooth, mostly purple. Leaves approximate, from 

 5 to 8 lines long, 3 or 4 wide, prominently veined and 

 smooth beneath, mostly acute, upper ones entire, lower 

 with very few serraitures, asperate on the margin, the up- 

 per surface scattered with short hirsute hairs. Flowers 

 very small, and pale. 5. angiistifulia. Ph. 

 f f Floxvers racemose. 



6. iaterijlora. 7- caroliniana. Is not this a variety of 

 the following? 8. integrifolia. Obs- The whole plant in- 

 yoL. II. D 



