356 LABIATiE. Pi/cnanthemum. 



the length of the tube, often bearing one or two bristle-like hairs. — Clinopodium incanum, 

 L. Spec. ii. 588. Origanum punctatnm, Poir. Pycnanthemum Loomisit, Nutt. in Jour. Acad. 

 Fhilad. vii. 100; form approaching the next. — New England and W. Canada to Ohio, and 

 south to Florida and Louisiana. 



P, albescens, Torr. & Gray, 1. c. Stems slender, puberulent, all the parts smaller 

 leaves oblong- or ovate-lanceolate, obscurely serrate, small (inch or so long), canescent 

 beneath and the uppermost on both sides with a minute close pubescence, as also are the 

 short and beardless calyx and bracts ; teeth of the former short, triangular-ovate, obtuse. 

 — Am. Jour. Sci. 1. c. P. incanum, var. albescms, Chapm. Fl. 316. — Alabama and Florida 

 to Texas. 

 § 3. Flowers densely verticillastrate-capitate ; the globose glomerules sessile 



and solitary at the summit of the stem and in some of the upper axils, copiously 



and conspicuously bracteate : calyx tubular ; the short teeth nearly equal : aspect 



somewhat of Monarda. 



P. montanum, Michx. Sweet-aromatic, glabrous or nearly so : leaves ovate- or 

 oblong-lanceolate, acuminate, acutely serrate, membranaceous (2 to 4 inches long), short- 

 petioled; bracts thin, lanceolate, long-acuminate, villous-ciliate : calyx-teeth triangular- 

 subulate, naked, very much shorter than the narrow tube. — Fl. ii. 8; Gray, 1. c. Monar- 

 della montana, Benth. Lab. 331. Monarda gracilis, Pursh, Fl. i. 17'?— Moist woods, Alle- 

 ghany Mountains, S. Virginia and Tennessee to Georgia and Alabama. 



14, MONARDI^LLA, Benth. (Diminutive of Monarda, which this 

 wholly western American genus resembles in aspect, inflorescence, and calyx ; 

 while in the rest of the flower it is near Pycnanthe^num.) — Flowers in terminal 

 and solitary verticillastrate heads, subtended or involucrate by broad often mem- 

 branaceous and colored bracts : corolla red, rose, purple, or rarely white. Pleas- 

 antly aromatic fragrant herbs, mostly entire-leaved. — Benth. Lab. 331, & in DC. 

 Prodr. xii. 190 ; Gray in Proc. Am. Acad. xi. 100. 



§ 1. Flowers large and comparatively few, rather loosely glomerate: tube of 

 corolla much longer than the limb : anther-cells oval-oblong, divaricate : root 

 perennial. 



M. macrantha, Gray. A span high from creeping sufErutescent rootstocks, puberulent 

 or pubescent: leaves subcoriaceous, ovate, obtuse, glabrate, 5 to 10 lines long, slender- 

 petioled : heads 10-25-flowered, with lax and thin ovate or oblong obtuse bracts : calyx- 

 teeth lanceolate, acute : corolla very much exserted, inch and a half long, scarlet, with 

 tube slightly trumpet-shaped, and comparatively small lanceolate lobes only 3 or 4 lines 

 long. — Proc. Am. Acad. 1. c. & Bot. Calif, i. 593; Hook. f. Bot. Mag. t. 6270. — San Diego 

 Co., California, Cleveland, Palmer. Also, in a more foliaceous and less showy form (taller, 

 more hirsute-pubescent, with leaves tliinner and a full inch long, and flowers rather 

 smaller), San Bernardino Co., Parry & Leinmon. 

 M. nana, Gray, 1- c. Hirsute-pubescent, a span high : leaves and heads nearly of the 

 preceding : corolla slender, less than an inch long, white tinged with rose ; pubescent tube, 

 little exceeding the calyx. — S. California, in mountains behind San Diego, Cleveland. 

 § 2. Flowers smaller, more numerous, and densely capitate : calyx only a 

 quarter or a third of an inch long : tube of the corolla little exserted and little 

 longer than the limb : anther-cells shorter and less divaricate. 



* Perennials, in tufts, often slightlv lignesceut at base : corolla from whitish or flesh-color to rose- 

 purple- the lobes linear: calvx-teeth lanceolate or triangular-lanceolate, merely or hardly acute, 

 soft. (Seemingly transitional forms occur between all but the first species.) 

 •J- Leaves from ovate to lanceolate, petioled, more or less obviously pinnately veined : bracts 

 obtuse and pointless. 

 M. hypoleuca. Pubescent, a foot or two high : leaves densely tomentose-oanescent 

 beneath, silvery-white when young, glabrate and green above, ovate-oblong, obtuse, entire. 



