Hedeoma. LABIATE. 361 



lar and gibbous calyx and the bracts very hirsute, nearly equalling the light purple nar- 

 row corolla. — Clinopodiumvulyare, L. ; Smitii, Engl. Bot. t. 1401. — Borders of thickets and 

 fields, common nortiiward, and seemingly introduced : indigenous from the Great Lakes to 

 the Rocky Mountains. (Eu., Asia.) 



20. MELISSA, Tourn, Balm. (Greek name of the honey-bee, trans- 

 ferred to a plant the blossoms of which are sought by bees.) — Herbs, of the Old 

 World, only one common species. 



M. OFFICINALIS, L. (Common Balm.) Upright or spreading and brandling perennial, 

 pubescent ; with broadly ovate or cordate crenate-tootlied lemon-scented leaves, and loose 

 axillary cymes of white or wliitish flowers; in summer. — Escajied from gardens to waste 

 grounds, eastward. (Sparingly nat. from Eu.) 



21. CONRADfNA, Gray. (Named in memory of /S'o/omo?i W. Conrad, oi 

 Philadelphia, botanist, and publisher of his friend Muhlenberg's works.) — Proc. 

 Am. Acad. viii. 244. — Founded on a single species ; with leaves resembling Rose- 

 mary. 



C. canescens, Gray, 1. c. Somewhat shrubby, much branched, minutely cancscent, 

 leafy: the leaves also fascicled in the axils, narrowly linear, obtuse, with revolute mar- 

 gins : flowers solitary or in threes in the upper axils, short-pedicelled : teeth of the calyx 

 and sometimes the tube villous witli long spreading hairs : corolla pink or white, dotted in 

 tiie throat, hairy outside, lialf inch long. — Ciilamintha canescens, Torr. & Gray in DC. 

 Prodr. xii. 22!); Ciiapm. Fi. ^18. — Sandy sea-sliore and adjacent pine woods, Alabama and 

 Florida, from Mobile to Tampa Bay {lluisc), and Indian Kivcr on tlie east {Palmer): fl. 

 summer. 



22. POLIOMtNTHA, Gray. {Uoho^, hoary-white, and ixivda, Mint.) — 

 Texano-Mexican low suifrutescent plants, canescent throughout or nearly so ; 

 with entire leaves, and few-several-flovvered cymes or glomerules in their axils, 

 the uppermost sometimes diminished and bract-like. Corolla rose-color or purple, 

 with tube either equalling or much surjiassing the calyx. — Proc. Am. Acad. viii. 

 295, 3G;j ; Benth. & Hook. Gen. ii. 1189. (Genus too near Gardoqma, of the 

 Andes from Mexico to Chili, not to be distinguished if that becomes really 

 diandrous.) 



P. incana, Gray, 1. c. A foot or so high, very much branched, silvery with very close 

 and minute tomentum : brandies virgate : leaves linear or the lower oblong (3 to 9 lines 

 long), sessile, veinless and the midrib obscure ; the upper floral shorter than the 1 to 3 sub- 

 sessile flowers in tlicir axils: calyx oblong or cyliiidraceous, 15-nerved, white-villous 

 (3 lines long), witli conspicuous subulate teeth, half tlie length of the corolla, equalling its 

 tube, wliich is pilosc-annnlatc at the summit. — Hedeoma incana, Torr. Mex. Bound. 130. — 

 We-stern Texas to S. Utah, Wrirfht, Biijelow, Parry, Brandeijee, Mrs. Thompson, &c. 



P. mollis, Gray, 1. c. A foot or more high, more tomentose, lierbaceous nearly to the 

 base : loaves ovate or oval, narrowed into a short petiole, 3-5-plinerved : calyx-teeth 

 minute, unequally spreading, one-fifth the length of the 13-striate tube, wliich is hardly 

 half the length of the corolla : tube of tlie latter not annulate but sparsely pilose within. 

 — Hedeoma me>llls, Torr. I.e. 129. — Borders of Mexico and Texas, on cliffs of the Rio 

 Grande at Puerto de Paysano, B'kjcIow. 



23. HEDE6MA, Pers. (Name altered from the Greek' IlUoa^iov, a sweet- 

 smelling herb, probably of this family. Tlie plants have the scent and taste of 

 the European YeimyroyixX, Mentha Pithfiuim.) — Low herbs, all American, chiefly 

 of Atlantic U. S. and Mexico ; with small flowers, iu summer. — Gray, Proc. Am. 

 Acad. viii. 3GG; Benth. & Hook. Gen. ii. 1188. 



