MALLOW FAMILY 95 



interrupted-spicate, 1-3 dm. long, the flower-clusters subtended by reduced leaves or 3-dentate 

 foliaceous bracts; involucellate bractlets broadly ovate, 6-10 mm. long; calyces 6-10 mm. long, 

 plicate-angled and acuminate in bud, densely stellate-pubescent, the lobes broadly ovate, abruptly 

 acuminate, 5-8 mm. long ; petals rose-pink, 12-18 mm. long ; stamineal column about one-third 

 as long as the petals ; carpels ovate-reniform, 3-4 mm. high, stellate-pubescent over most of the 

 upper surface, smooth and glabrous on the back. 



On open rocky slopes, Upper Sonoran Zone; southern San Benito County and eastern Monterey County 

 Type locality: Indian Valley, Monterey County, California. June-Sept. 



10. Malvastrum Abbottii Eastw. Abbott's Malvastrum. Fig. 3186. 



Malvastrum Abbottii Eastw. Leaflets West Bot. 1:215. 1936. 



Slender shrub 1-2 m. high with finely stellate-canescent twigs, herbage and inflorescence. 

 Leaves broadly ovate to suborbicular, truncate or subcordate at the base, crenate, 1 . 5-6 cm. long, 

 moderately rugulose-veined, pale beneath; petioles 7-20 mm. long, slender; stipules lance- 

 subulate, 4-5 mm. long; inflorescence a spreading panicle 3-5 dm. long, lateral branches often 

 15 cm. long; pedicels 1-4 mm. long, stellate-canescent; involucellate bractlets ovate-lanceolate, 

 1-2 mm. broad, 6-8 mm. long, purplish toward the tip ; calyx ovoid-acuminate in bud, 7-8 mm. 

 long, lobes ovoid-acuminate at anthesis, tomentose on the upper half on the inside; petals 12-15 

 mm. long, rose-colored ; stamineal column 5-6 mm. long, glabrous ; fruits unknown. 



Stream banks, Upper Sonoran Zone; known only from the type specimen, collected among willows on the 

 Salinas River, Monterey County, California. Sept.— Oct. 



11. Malvastrum Fremontii Torr. Fremont's Malvastrum. Fig. 3187. 



Malvastrum Fremontii Torr. ex A. Gray, Mem. Amer. Acad. II. 4: 21. 1849. 

 Malveopsis Fremontii Greene, Erythea 1: 171. 1890. 

 Sphaeralcea Fremontii Jepson, Man. Fl. PI. Calif. 633. 1925. 



Shrub 1-2.5 m. high, densely white stellate-tomentose. Leaves broadly ovate to suborbicular, 

 truncate to subcordate, shallowly 3-7-lobed or crenate, 1.5-5 cm. long, rugose, prominently 

 veined beneath; petioles 1-2.5 cm. long; stipules linear, 5-10 mm. long; inflorescence interrupted- 

 spicate-glomerate ; involucellate bractlets linear-setaceous, about equaling the calyx; calyx 

 globose in bud, 6-10 mm. long, densely tomentose, the lobes acute, 3-4 mm. long, obscured by 

 the thick wool; petals pink to rose-colored, 12-15 mm. long; stamineal column stout, 6-7 mm. 

 long; carpels ovate, 3-3.5 mm. high, coarsely stellate-pubescent on the summit in youth, soon 

 glabrate; seeds dark brown, minutely and irregularly puberulent. 



Foothill slopes and dry canyons. Upper Sonoran Zone; Inner Coast Ranges and west side of the Sierra 

 Nevada, Colusa and Amador Counties to Tehachapi Pass, California. Type locality: "Interior of California." 

 May-Sept. 



Malvastrum Fremontii var. cercophorum Robinson in A. Gray, Syn. Fl. N. Amer. 1': 311. 1897. (Mal- 

 vastrum Howellii Eastw. Leaflets West. Bot. 1: 220. 1936; Malvastrum Howellii var. cordatum Eastw. loc. cit.; 

 Sphaeralcea Fremontii var. cercophorum Jepson, Fl. Calif. 2: SOD. 1936.) Tips of caly.x-lobes erect in bud, 

 lanceolate-acuminate, 6-10 mm. long, nearly or quite equaling the petals. Dry hillsides and arroyos, eastern 

 slopes of the Inner Coast Ranges, from Contra Costa County to western Stanislaus County, California. Type 

 locality: Arroyo del Valle, Alameda County. 



Malvastrum Fremontii subsp. exfibulosum (Jepson) Wiggins. {Sphaeralcea Fremontii var. cxfibulosa Jep- 

 son, Fl. Calif. 2:500. 1936; Malvastrum Helleri Eastw. Leaflets West. Bot. 1:217. 1936.) Leaves broadly 

 cuneate at the base, the lobes acute instead of rounded, coarsely and irregularly dentate, scarcely at all rugose 

 above. Dry hillsides, Upper Sonoran Zone; northwestern Colusa County, and adjacent Lake County south to 

 western Yolo County, California. Type locality: near Winters, Yolo County. 



Malvastrum Fremontii var. niveum (Eastw.) McMinn, 111. Man. Calif. Shrubs 343. 1939. (Malvastrum 

 fragrans Eastw. Leaflets West. Bot. 1:218. 1936. Not M. fragrans Harv. & Gray, 1859-60; Malvastrum 

 niveum Eastw. op. cit. 232.) Stipules setaceous, 3-4 mm. long; leaves 2 cm. or less in width; inflorescence 

 paniculate. In chaparral, Inner Coast Ranges, central San Luis Obispo County to northern Santa Barbara 

 County, California. Type locality: near Santa Margarita, San Luis Obispo County. 



12. Malvastrum gracile Eastw. Slender Malvastrum. Fig. 3188. 



Malvastrum gracile Eastw. Leaflets West. Bot. 1:219. 1936. 



Shrub 1-2 m. high, felty-tomentose on new growth. Leaves broadly ovate, shallowly 3-lobed, 

 crenate, truncate or obtusely rounded at the base, obtuse at the apex, faintly veined and pale 

 green above, ashy and prominently S-veined beneath, 1-3 cm. long; stipules minute, subulate- 

 setaceous, 1.5-3 mm. long, purplish; inflorescence paniculate, 15-30 cm. long; pedicels stout, 

 0.5-4 mm. long; calyx broadly obturbinate and 5-7 mm. long, felty-stellate, nearly white at the 

 base, purplish toward the apex with purplish glandular hairs among stellate hairs, lobes narrowly 

 short-acuminate, 3-4 mm. long ; involucellate bractlets filiform, about equaling the calyx, purplish ; 

 petals 10-15 mm. long, oblong, rose-colored; stamineal column glabrous, 8 mm. long; carpels 

 2 mm. high, ovate-reniform, stellate-puberulent on the summit, glabrate on the back. 



Hillsides, Upper Sonoran Zone; central San Luis Obispo County, California. Type locality: between 

 Arroyo Grande and Huasna, San Luis Obispo County. June-July. 



13. Malvastrum clementinum Munz & Jtn. San Clemente Malvastrum. 



Fig. 3189. 



Malvastrum clementinum Munz & Jtn. Bull. Torrey Club 51 : 296. 1924. 

 Sphaeralcea orbiculata var. Clementina Jepson, Fl. Calif. 2: 499. 1936. 



Shrub 1-2.5 m. high, the stems white-tomentose with soft, silky stellate hairs when young. 

 Leaves ovate or pentagonal, shallowly 3-5-lobed, cordate, 3-5 cm. long and broad, irregularly 



