MALLOW FAMILY 97 



L Eremalche rotundifolia (A. Gray) Greene. Desert Five-spot. Fig. 3192. 



Malvastrum rotundifoliiim A. Gray, Proc. Amer. Acad. 7:333. 1868. 

 Eremalche rotundifolia Greene, Leaflets Bot. Obs. 1 : 208. 1906. 

 Spliaeralcea rotundifolia Jepson, Man. Fl. PI. Calif. 633. 1925. 



Erect annual 1-3 dm. high ; stems sparsely hispid. Leaves orbicular-cordate, crenate, 1^ 

 cm. broad, sparsely stellate-hispid; petioles 1-8 cm. long, sparsely hispid; stipules triangular- 

 lanceolate, 3-4 mm. long; flowers axillary, solitary or in pairs; pedicels slender, 2-6 cm. long; 

 involucellate bractlets linear-lanceolate, 5-10 mm. long ; calyx densely and finely stellate-pu- 

 bescent, the lobes broadly ovate-lanceolate, 4-6 mm. broad, 8-12 mm. long, acuminate; petals 

 obovate, 10-25 mm. long, rose-purple, with a crimson spot near the base; fruit discoid, 10-15 

 mm. broad; carpels 20-40, orbicular, strongly flattened laterally, 3-3.5 mm. in diameter, dark 

 brown to black, angles acute. 



Sandy soil, Lower Sonoran Zone; Inyo County through the Mojave and Colorado Deserts, California, to 

 southwestern Arizona and northern Lower California. Type locality: Fort Mojave. Feb.-June. 



2. Eremalche Parry i Greene. Parry's Mallow. Fig. 3193. 



Malvastrum Parryi Greene, Fl. Fran. 108. 1891. 

 Eremalche Parryi Greene, Leaflets Bot. Obs. 1 : 208. 1906. 

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



Erect or decumbent annual, finely stellate-pubescent throughout, stems 1-3 dm. long. Leaves 

 1-2 cm. broad, palmately 3-5-lobed, the lobes irregularly 3-7-toothed; petioles slender, 1-3.5 

 cm. long; stipules linear-subulate, 2-4 rnm. long; flowers polygamo-dioecious, solitary, the 

 pistillate smaller and darker than the staminate ; pedicels 3-6 cm. long ; bractlets 5-8 mm. long, 

 filiform; calyx 3-5 mm. broad at anthesis, densely stellate-pubescent, the lobes ovate-lanceolate, 

 6-8 mm. long, incurved in age ; petals obovate, rose to rose-purple, 8-20 mm. long ; fruit discoid, 

 6-8 mm. broad; carpels 10-15, reniform, 1.5-2 mm. high, about 1 mm. thick, transversely ridged 

 on the back and angles, smooth on the sides. 



Interior valleys and foothills, Lower and Upper Sonoran Zones; Alameda and Mariposa Counties south to 

 Kern and Santa Barbara Counties, California. Type locality: Monterey County. March-May. 



3. Eremalche kernensis C. B. Wolf. Kern Mallow. Fig. 3194. 



Eremalche kernensis C. B. Wolf, Occ. Papers Rancho Santa Ana Bot. Gard. 1 : 66. 1938. 



Prostrate to erect annual with sparsely stellate-puberulent stems 10-20 cm. long. Leaves 



deeply 3-5-lobed, 1-3.5 cm. long, about as wide or slightly wider, the lobes irregularly crenate, 



stellate-puberulent; petioles 1-4 cm. long; flower solitary, axillary, on pedicels 1-2.5 cm. long; 



bractlets filiform, 3-4 mm. long ; calyx-lobes lance-triangular, 2-3 mm. wide, 7-10 mm. long, 



closely stellate-pubescent with S-8-rayed hairs ; petals white to pale lavender, obovate, 10-13 



mm. long ; carpels 8-13, transversely corrugated dorsally, about 2 mm. long, gray to light brown, 



dull. 



Dry hills and valley floors. Lower Sonoran Zone; western Kern County, California. Type locality: Temblor 

 Valley, Kern County. April-May. 



4. Eremalche exilis (A. Gray) Greene. White Mallow. Fig. 3195. 



Malvastrum exile A. Gray, Ives Rep. 8. 1860. 

 Eremalche exilis Greene, Leaflets Bot. Obs. 1: 208. 1906. 

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



An erect or decumbent annual with stems 1-4 dm. long, finely stellate-puberulent throughout. 

 Leaves 1-2.5 cm. broad, cuneate or truncate at the base, palmately 3-5-lobed, irregularly crenate 

 or dentate; petioles 1-4 cm. long; stipules subulate, 2-3 mm. long; flowers perfect, solitary; 

 pedicels 0.5-3 cm. long; bractlets linear-lanceolate, 2i-7 mm. long; calyx 4-6 mm. long, 2.5-3 

 mm. wide at anthesis, the lobes ovate-lanceolate, acuminate, stellate-puberulent inside and out, 

 erect in fruit; petals obovate, 2-5 mm. long, white; fruit discoid, 5-7 mm. broad; carpels 10-15, 

 orbicular-reniform, 1 . 5 mm. high, transversely ridged on the back and rounded angles, dark 

 brown. 



Sandy soil, Lower Sonoran Zone; Inyo and Los Angeles Counties, California, south to Arizona, northern 

 Lower California, and Sonora; also near King City, California. Type locality: Pyramid Canyon, Colorado 

 Desert, California. Feb.-June. 



8. SIDAlCEA a. Gray in Benth. PI. Hartw. 300. 1848. 



Erect or ascending annual and perennial herbs with stellate or simple pubescence and 

 orbicular palmately lobed or divided alternate leaves. Stipules small, deciduous. Inflores- 

 cence terminal, racemose or spicate, simple or paniculately branched. Involucels absent. 

 Flowers often polygamo-dioecious, the pistillate flowers smaller than the perfect or stami- 

 nate ones. Stamineal column distinctly double except in Hickmunii and malachroides. 

 Style-branches slender, stigmatic along the inner surface. Carpels short -beaked or_ beak- 

 less, somewhat flattened laterally, smooth or reticulate on the sides and back, indehiscent, 



