NEW SPECIES OF PLANTS. 123 



12. Verbena, (subgenus. Glandularia.) Genus 

 Glandularia, Gmelin. 



Calix tubulosus, quinquedentatus, dentibus seta- 

 ceis inaequalibus. Corolla liinbus quinquefidus sub- 

 a&qualis, lobus cniarginatus, ore villoso. Stigma bila- 

 biata. 



Foliis triiidis laciniatis oppositis ; spica solitaria^ 

 pedunculata. Corolla Buchnerce. 



— Gl. *bipinnatifida, suberecta, hirsuta, foliis 

 trifidis bipinnatifidis, laciniis linearibus ; seminibus 

 impresso-punctatis. 



Habitat. On the open calcareous hills of Red 

 River. — Flowering in May and June. 



Observation. Perennial. Leaves trifid, divi- 

 sions trifidly pinnatifid, somewhat hirsute. Bractes 

 subulate, longer than the calix. Calix tubular, den- 

 tures subulate, unequal, the lowest segment very 

 short. Tube of the corolla nearly straight, longer 

 than the calix ; border large and flat, five -cleft, the 

 lobes obcordate and emarginate, and with the orifice 

 villous. Stamina fertile, didynamous and included. 

 Style at length exserted, stigma bilabiate, the lobes 

 unequal. Corolla lilac blue, with the border equal 

 and similar to that of V. Aubletia, which species the 

 whole plant strongly resembles. These two similar 

 species appear to justify a subgeneric separation 

 from Verbena, which had formerly been attempted by 

 Gmelin. 



Cultivated Locality. — Garden of the University of 

 Pennsylvania. A hardy perennial, increasing by 

 cuttings. 



