Hedeoma. LABIATiE. 361 



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

 row corolla. — Clinopodiuinvulgare, L. ; Smith, Engl. Bot. t. 1401. — Borders of tliickets and 

 fields, common northward, 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. 



— y^ OFFICINALIS, L. (CoMMOs Balm.) Upright or spreading and branching perennial, 

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

 a.xillary cymes of white or whitish flowers ; in summer. — Escaped from gardens to waste 

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



21. CONRADlNA, Gray. (Named in memory of .^ofomo^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. e. Somewhat shrubby, much branched, minutely canescent, 

 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 with long spreading hairs : corolla pink or white, dotted in 

 the throat, hairy outside, half inch long. — Calamintha canescens, Torr. & Gray In DC. 

 Prodr. xii. 229 ; Chapm. Fl. .318. — Sandy sea-shore and adjacent pine woods, Alabama and 

 Florida, from Mobile to Tampa Bay (Hulse), and Indian Kiver on the east (Pcdvner) : fl. 

 summer. 



22. POLIOMlNTHA, Gray. {Uohoi, hoary-white, and fuvda, Mint.) — 

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

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

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

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

 29.5, 365; Benth. & Hook. Gen. ii. 1189. (Genus too near Gardoquia, 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 : branches 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 their axils: calyx oblong or cylindraeeous, 15-nerved, white-villous 

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

 tube, which is pilose-annulate at the summit. — Hedeoma incana, Torr. ilex. Bound. 130. — 

 Western Texas to S. Utah, Wright, Bigelow, Parry, Brandegee, Mrs. Thompson, &c. 



P. inollis, Gray, I. c. A foot or more high, more tomentose, herbaceous nearly to the 

 base: leaves ovate or oval, narrowed into a short petiole, 3-6-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 the latter not annulate but sparsely pilose within. 

 — Hedeoma mollis, Torr. I.e. 129. — Borders of Mexico and Texas, on clifEs of the Rio 

 Grande at Puerte de Paysano, Bigelow. 



23. HEDE6MA, Pers. (Xame altered from the Greek' Hdvoafiov, a sweet- 

 smelling herb, probably of tliis family. The plants have the scent and taste of 

 the European Pennyroyal, J/ejii'^a Pidegium.') — Low herbs, all American, chiefly 

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

 Acad. viii. 36G; Benth. & Hook. Gen. ii. 1188. 



