228 Engelmann and Gray, 



&c. near Houston. Flowering through the summer. Dr. 

 Engelmann has likewise collected the smaller variety at the 

 Hot Springs, in Arkansas. Fruiting specimens of this well- 

 marked species also exist in Drummond's Texan Collection, 

 (No. 209, Coll. 3,) but we find no allusion to it in Bentham's 

 fine Monograph of the Labiatse. The smaller forms might be 

 confounded with S. parvula, but even the floral leaves are 

 distinctly petioliate, broadly triangular-ovate, or cordate, and 

 more or less crenate-toothed ; all are shorter than the corolla, 

 which is three-fourths of an inch long ; the uppermost scarcely 

 exceeding the calyx. The cauline leaves are from one to 

 nearly two inches in length, and considerably resembling those 

 of S. saxatilis, Riddell : those of the elongated flower 

 branches scarcely half an inch long. Achenia strongly tuber- 

 culate. Root apparently annual. 



145. Salvia azure a, Lam. Houston. May to September. 



146. Hyptis radiata, Willd. Houston. September. 



147. Physostegia Virginiana, Benth., var. foliis ovalibus 

 oblongisve subdenticulatis. (Dracocephalum variegatum, 

 Vent., Ell.) Wet prairies west of the Brazos. July. 



148. P. Virginiana, var. foliis lanceolatis argute serratis. 

 Dry, sandy soil. Houston. September. 



149. Trichostemma dichotomum, Linn. September. 



150. Teucrium Cubense, Linn., Benth. Lab. p. 668. 

 Galveston Island. April, May. 



151. Monarda Lindheimeri, (n. sp.) : caule glabro super- 

 ne piloso subsimplici ; foliis ovatis acuminatis subcordatis 

 grosse serratis glabris glandulosis margine scabris, petiolis 

 brevibus basi pilosis ; bracteis acuminatis integris capitulum 

 laxum suboequantibus ; calycibus glandulosis, dentibus subu- 

 latis diametrum tubi subaequantibus, fauce villosa ; corolla 

 glandulosa et villosa. — Prairies and margin of woods, in 

 clayey soil. April to June, and again in October. — According 

 to Mr. Bentham's view, this would probably be deemed a 

 variety of M. clinopodia. 



152. M. punctata, Linn. Houston. July. 



