MINT FAMILY. 363 



ovate to ovate-lanceolate, sessile, serrulate along the sides, the acuminate apex 

 and rounded or cordate base entire, 3% in. long or less; calyx pubescent, the 

 tips of the teeth very woolly exteriorly; corolla sprinkled exteriorly with resin 

 -. its throat hairy. — (Pycnanthemum calif ornicum Torr.) 

 Sierra Nevada and Coast Eanges. duly- Aug. 



15. MONARDELLA Benth. 

 Annual or perennial herbs, for the most part pleasantly fragrant. Flowers 

 in heads: heads terminal on the stems or branches, subtended by broad in- 

 volucral bracts, which are often more or less colored. Calyx tubular, narrow, 

 15-nerved, the 5 teeth equal or nearly so. Corolla glabrous within, rose- 

 purple, lavender or dull white; upper lip erect, 2-cleft, the lower 3-parted, all 

 the lobes linear or narrowly oblong. Stamens 4, all fertile, strongly or 

 moderately unequal, exserted, distant and straight. (Diminutive of Monarda, 

 on account of its resemblance to that genus.) 



Annuals. 



Leaves entire; interior species or at least not of the seaward ranges. 



Bracts with strong transverse ribs from the midrib to the conspicuous marginal 

 nerve, the spaces between the ribs silvery-scarious or transparent; corolla-tube 



little exserted 1. Af. douglasii. 



Bracts whitish-scarious, the ribs converging toward the apex, at least in the inner 



bracts; corolla-tube much surpassing the calyx 2. Af. breweri. 



Leaves undulate; seacoast species 3. Af. undulata. 



Perennials. 



Leaves ovate to lanceolate, green on both faces, mostly serrate 4. M. villosa. 



Leaves rhomboidal to oblong, green on the upper, white on the lower face, entire.... 



5. Af. viridis. 



1. M. douglasii Benth. Four to 10 in. high, nearly glabrous, loosely 

 branched; leaves narrowly oblong or lanceolate, abruptly short-petioled, the 

 whole about 1 in. long; heads on terminal or axillary peduncles; bracts ovate 

 and ovate-lanceolate, cuspidate, with strong pinnate ribs which are confluent 

 along the margin, the spaces between them silvery-scarious; corolla deep 

 purple, the tube little exserted beyond the cuspidate triangular-lanceolate 

 calyx-teeth. 



Gilroy Valley; Alameda and Contra Costa cos. Eemarkable for its fen- 

 estrate bracts. 



2. M. breweri Gray. Six in. high, finely scabrous-pubescent; leaves ob- 

 long or narrowly ovate, short-petioled, the lower over 1 in. long; bracts broadly 

 ovate, abruptly acuminate-cuspidate, whitish-scarious, the outer pinnately 7 

 to 9-ribbed, the inner with the ribs parallel and converging to the point; 

 calyx-teeth triangular-lanceolate, not cuspidate; corolla rose-color or rose- 

 violet, the tube much surpassing the calyx. 



Corral Hollow '(inner South Coast Eanges), ''plant very fragrant," Brewer. 



M. laxceolata Gray. Mustang Mint. Simple or sparingly branched above, 

 •' : 4 to 2y 2 ft. high; bracts herbaceous, often turning reddish; calyx-teeth 

 merely acute; corolla rose-purple, its lobes very long and narrow.— Sierra 

 Nevada foothills and middle altitudes. M. caxdicaxs Benth. Bracts ovate, 

 with parallel greenish nerves and white-scarious margins; calyx-teeth white, 

 acute, flowers white. — Sierra Xevada foothills. M. leucocephala Gray. 

 Very similar to the last, but the bright white bracts are more nearly orbicular 

 and the calyx-teeth are subulate, rough-hispidulous, and recurved. — M 

 plains of the San Joaquin Valley. 



3. M. undulata Benth. Loosely branched, -j to 9 in. high; stems reddish 

 brown, puberulent; leaves thickish, oblong-oblanceolate or linear, obtuse, nar- 



