MINT FAMILY 415 



Style glabrous ; nutlets hardly % line long ; bracts and upper stems merely puberulent, non- 

 glandular. 

 Anthers glabrous or slightly hairy; eoroUa-tube gradually enlarging upward to the slender 



throat 2. A. ilicifoUa. 



Anthers woolly; corolla tube abruptly expanding to an open somewhat gibbous throat 



3. A. obovata. 



1. A. lanceolata Curran. (Fig. 431.) Stem stoutish, branching from the 

 base, 7 to 12 inches high; herbage soft-pubescent, oily and ill-scented; leaf -blades 

 ovate to oblanceolate, entire to sparingly dentate, 3 



to 11 lines long, the petiole slender ; bracts elliptic- 

 ovate, 5 to 6 lines long, the aristate prickles 3 to 4 

 lines long; corolla white, 6 to 7 lines long, rather 

 deeply 2-lipped, its tube 1 to IV2 lines long, gradually 

 ampliate into the throat ; throat rather broad above, 

 bearing at base a zone of deflexed hairs ; upper lip 

 keeled and somewhat falcate-incurved, cleft at apex ; 

 lower lip shallowly saccate, 3-lobed, the middle lobe 

 oblong, the lateral ovate-acute. 



Eoeky places on ridges and canon slopes, alwaj^s 

 on serpentine, 1000 to 3600 feet: Mt. Hamilton 

 Range; San Carlos Range (its bordering foothills on 

 west and southwest sides in San Benito Co. and south- 

 eastern Monterey Co.). Mar.- July. Fig. 431. Acanthomintha lan- 



m ,. mi." 1 1- « ii 1 • A iu • ii, CEOLATA Curran ; bract, X 2. 



Tax. note. — The lower lip of the calyx m Acanthomintha ' ' 



lanceolata is cleft as far down as the lateral sinuses. In the 



other two species, A. ilicifolia and A. obovata, the lower lip is cleft but not so far down as in 

 A. lanceolata. It is to be noted, also, that spines of the bracts and calyces are longer in A. lanceo- 

 lata than in A. ilicifolia or A. obovata. 



Locs. — Mt. Hamilton Range (nutlets % line long) : Cedar Mt., Alameda Co., Elmer 4442; 

 Mt. Hamilton, Greene; Soda Springs Caiion, near Madrone Sprs., Dudley 4151; upper Puerto 

 Caiion, w. Stanislaus Co., Hoover 2628. San Benito and Monterey Cos. (nutlets 1% lines long) : 

 Lewis Creek (e. of Loneoak), Keck 2852; Slack Caiion, K. Brandegee ; Parkfield (n. of), Mum 

 9190. The plants from the two regions, Mt. Hamilton Range and San Carlos Range, seem iden- 

 tical save for the slight difference in size of nutlets (R. F. Hoover). 



Refs. — Acanthomintha lanceolata Curran, Bull. Cal. Acad. 1:13 (1884), type loc. Cala- 

 veras Valley, Alameda Co., E. Bronks; T. Bdg., Zoe 4:156 (1893) ; Jepson, Fl. W. Mid. Cal. 461 

 (1901), ed. 2, 360 (1911), Man. 872, fig. 818 (1925). 



2. A. ilicifolia Gray. Stem simple or widely branching from near the base, 

 4 to 13 inches high; herbage minutely puberulent or subglabrous; leaf -blades 

 roundish-ovate, crenate-cuspidate, obtuse, broadly euneate at base, 3 to 9 lines long, 

 on petioles about % as long; bracts orbicular, with strong callous nerves and mar- 

 gins, 7 to 10-spinose, 4 to 5 lines long ; calyx about % as long as corolla-tube ; corolla 

 white and rose-color, 6 to 8 lines long, the tube and throat glabrous within, the 

 middle lobe of lower lip notched ; lower pair of stamens twice as long as the upper. 



Hillslopes and mesas, on serpentine rocks, 100 to 1500 feet : eastern foothills of 

 Santa Cruz Mts. in San Mateo Co. ; southwestern San Diego Co. Northern Lower 

 California. Apr.-MaJ^ 



Geog. note. — The distribution of Acanthomintha ilicifolia is discontinuous and peculiar. The 

 San Mateo County plants sometimes have sparsely hairy anthers, but otherwise seem indistinguish- 

 able from the plants of San Diego, in which the anthers are apparently always glabrous (R. F. 

 Hoover). 



Locs. — San Mateo Co.: Crystal Springs Lake, Elmer 4538; Menlo, Button; Redwood City, 

 Rose 33,171. San Diego Co.: San Diego, Greene ; Paradise Valley, Cleveland. 



Eefs. — Acanthomintha ilicifolia Gray, Syn. Fl. 2:365 (1878) ; Jepson, Man. 872 (1925). 

 Calamintha ilicifolia Gray, Proc. Am. Acad. 8:368 (1872), type loc. "probably Lower Califor- 

 nia," Eicli. 



3. A. obovata Jepson. (Fig. 432.) Stems branching from the base, minutely 

 eanescent, 4 to 9 inches high ; leaf-blades obovate, denticulate, or the upper spinose- 



