624 MENTHACEAE 



high ; herbage densely glandular-pubescent. Leaves linear-oblong, 15-25 mm. long, obtuse above, 

 narrowed below to a sessile or subsessile base, entire or rarely few-toothed ; flowers often borne 

 in most of the axils; pedicels and calyx glandular-pubescent; corolla blue-purple, glandular- 

 pubescent on the outer surface, 25-30 mm. long, upper lip notched at apex, distinctly longer than 

 the lower; nutlets granular. 



Gravelly soils, Upper Sonoran and Transition Zones; Inner Coast Ranges of central California and in the 

 Sierra Nevada from Butte County to Tulare County. Type locality: "Hab. in California (Bridges 226)." May- 

 July. 



10. Scutellaria lateriflora L. Mad-dog or Blue Skullcap. Fig. 4375. 



Scutellaria lateriflora L. Sp. PI. 598. 1753. 



Perennial with slender stolons, entirely glabrous or puberulent above ; stems simple or 

 branched, erect or ascending, leafy, 2-15 dm. high. Leaves thin, ovate to ovate-oblong or ovate- 

 lanceolate, 3-7 cm. long, becoming smaller above, slender-petioled, acute or acuminate at apex, 

 obtuse to subcordate at base, coarsely serrate-dentate ; racemes axillary, also sometimes terminal, 

 slender, secund, several to many-fiowered ; corolla blue varying to white, 6-10 mm. long, the 

 lips short, about equal ; nutlets smooth, borne on a very short gynobase. 



Low moist places, Boreal and Transition Zones; British Columbia, western Washington and Oregon, also 

 San Joaquin and Inyo Counties, California, east to Newfoundland, Florida and New Mexico. Type locality: 

 "Canada, Virginia." July-Sept. 



5. MARRUBIUM [Tourn.] L. Sp. PI. 582. 1753. 



Perennial, mostly woolly herbs, with bitter juice and petioled, toothed, rugose leaves. 

 Flowers small, white or purple, in dense axillary clusters. Calyx cylindric, 5-10-nerved, 

 regularly 5-10-toothed, the teeth acute or aristate, spreading or recurved, nearly equal 

 or the alternating ones smaller. Corolla 2-lipped, upper lip erect, entire or emarginate, 

 lower spreading, 3-cleft, its middle lobe often emarginate. Stamens 4, included, didyna- 

 mous, the posterior pair shorter; anthers 2-celled. Styles cleft into 2 short lobes at sum- 

 mit; ovary deeply 4-lobed. Nutlets ovoid, smooth. [Name Hebrew, meaning bitter.] 



A genus of about 40 species, all natives of the Old World. Type species, Marrubium vulgare L. 



1. Marrubium vulgare L. Common Hoarhound. Fig. 4376. 



Marrubium vulgare L. Sp. PI. 583. 1753. 



Perennial herb with stout erect or ascending branches, 3-10 dm. high, white-woolly, espe- 

 cially below. Leaves oval to broadly ovate or suborbicular, 2.5-5 cm. long, crenate-dentate, 

 rugose-veined, obtuse to rounded at apex, narrowed to subcordate at base, woolly beneath, canes- 

 cent above ; petioles 1-2 cm. long ; flowers in dense axillary clusters, whitish ; calyx-teeth usually 

 10, subulate, more or less recurved. 



Roadsides and waste places, Arid Transition and Sonoran Zones; British Columbia to southern California 

 and across the continent. Native of Europe and Asia. April-Aug. 



6. AGASTACHE Clayton ex Gronov. Fl. Virg. 88. 1762. 



Erect herbs with perennial rootstocks, serrate-petioled leaves and small flowers in 

 dense verticillate clusters forming compact or interrupted terminal bracted spikes. Calyx 

 campanulate, somewhat oblique, usually 15-nerved, slightly 2-lipped, the upper lip with 2, 

 the lower with 3 approximately equal teeth. Corolla-tube not exceeding the calyx, the 

 limb conspicuously 2-lipped, the upper lip erect, 2-lobed, the lower spreading, 3-lobed with 

 the middle lobe crenate. Stamens 4, all fertile, exserted, divergent or distant, the upper 

 pair usually declined, the lower shorter and ascending; anther-cells parallel or nearly so, 

 both fertile. Style 2-cleft at summit; ovary deeply 4-parted. Nutlets ovoid, smooth. 

 [Name Greek, meaning many spikes.] 



A North American genus of about 8 species. Type species, Hyssopus scrophulariaefolius Willd. 



Lower surface of leaves glabrous or if puberulent only thinly so, at least not felt-like. 



Leaves mainly 3-4 cm. broad; calyx-teeth deltoid-lanceolate, 2.5-3.5 mm. long. 1. A. urticifolia. 



Leaves mainly 1-1.5 cm. broad; calyx-teeth deltoid-lanceolate, 4.S-5.5 mm. long. 2. A. Cusickii. 

 Lower surface of leaves canescent or hoary with a dense felt-like tomentulose puebscence. 



Leaves mainly 1-1.5 cm. broad, margins plane not inrolled; calyx-teeth narrowly deltoid-subulate. 



3. A. parvifolia. 



Leaves mainly 2-4 cm. broad, margins narrowly inrolled; calyx-lobes deltoid-lanceolate. 



4. A. occidentatis. 



1. Agastache urticifolia (Benth.) Kuntze. Nettle-leaved Horse-mint. Fig. 4377. 



Lophanthus urticif alius Benth. Bot. Reg. 15: under pi. 1282. 1829. 

 Agastache urticifolia Kuntze, Rev. Gen. PI. 2: 511. 1891. 

 Agastache glaucifolia Heller, Muhlenbergia 1: 32. 1904. 



Stems several from the base, 1-2 m. high, branched above, glabrous or nearly so. Leaves 

 ovate or deltoid-ovate, the median 3.5-8 cm. long, obtuse to acute or often acuminate at apex, 

 truncate or subcordate at base, or rarely cordate at base, coarsely serrate, upper surface mostly 

 glabrous and often shiny, sometimes minutely puberulent, lower surface paler, glabrous or pu- 



