MALLOW FAMILY 107 



white, deeply emarginate, 6-18 mm. long; flowers gynodioecious ; carpels orbicular-reniform, 

 3-4 mm. high, smooth, glabrous or sparsely stellate-puberulent. 



Along streams and in moist places near the coast, Upper Sonoran and Transition Zones; Curry County, 

 Oregon, to southern Monterey County, California. Type locality: California. Collected by Douglas. May-July. 



9. mAlVA L. Sp. PI. 687. 1753. 



Annual, biennial, or perennial, procumbent to erect herbs. Leaves alternate with pu- 

 bescent, lobed or dissected suborbicular blades. Flowers perfect, solitary or in axillary 

 clusters or in terminal spikes, subtended by 2-3 distinct bractlets. Calyx 5-cleft, the lobes 

 broad. Petals 5, emarg-inate. Fruit discoid. Carpels numerous, 1-celled, indehiscent, 

 beakless, reniform, 1 -seeded. Ovule ascending. [Name Greek, referring to the emollient 

 properties of the leaves.] 



A genus of about 30 species, of Europe, Asia, and Africa. Type species, Malva tomcntosa L. 



Leaves deeply palmately dissected; petals white. !• M. moschata. 



Leaves rounded or shallowly lobed; petals rose-tinged to purple. 

 Carpels reticulate dorsally. 



Calyx-lobes strongly reflexed at maturity; petals scarcely equaling the calyx-lobes, the claws glabrous; 



carpels pubescent. 2. M. parvtflora. 



Calyx-lobes incurved at maturity; petals 2-4 times as long as calyx, the claws villous-ciliate. 



Petals white, tinged with rose at apex and along the veins, 5-12 ram. long; bractlets of calyx ovate. 



3. M. nicaeensis. 



Petals mauve-purple, 15-20 mm. long; bractlets oblong-lanceolate. 4. M. sylvestris. 



Carpels smooth dorsally, pubescent. 5. M. rotundifolia. 



L Malva moschata L. Musk Mallow. Fig. 3218. 



Malva moschata L. Sp. PI. 690. 1753. 



Perennial herb, 5-8 dm. high, from a woody rootstock, sparsely pubescent throughout with 

 simple and stellate hairs. Leaves suborbicular in outline, the lower small, 1 cm. or less broad, 

 shallowly incised, the cauline 2-5 cm. broad, deeply 3-5-parted, the divisions further incised or 

 lobed; petioles hirsute, 0.5-5 cm. long; stipules subulate-lanceolate, 3-8 mm. long, villous-ciliate, 

 membranaceous; flowers in a crowded terminal raceme, usually a few solitary in the axils of 

 upper leaves ; bractlets ovate-lanceolate, 3-4 mm. long ; calyx 8-10 mm. long, the lobes broadly 

 ovate, acute; petals obovate, emarginate, 10-15 mm. long, white, the claws villous; fruit discoid; 

 carpels numerous, densely hispid dorsally, orbicular-reniform, beakless, side walls smooth or 

 lightly striate. 



Waste places and roadsides. Upper Sonoran and Transition Zones; British Columbia to Nova Scotia, and 

 southward to Oregon, Wisconsin, and Virginia. Type locality: Italy. Summer. 



2. Malva parviflora L. Cheese-weed. Fig. 3219. 



Malva parviflora L. Amoen. Acad. 3: 416. 1756. 

 Malva obtusa Torr. & Gray, Fl. N. Amer. 1: 225. 1838. 



An erect, widely branching annual or biennial, 2 dm. to 2 m. high, sparsely stellate-pubescent 

 to glabrate throughout. Leaves suborbicular in outline, 1.5-10 cm. broad, shallowly 5-7-lobed, 

 cordate at base, dentate to crenate ; petioles 3-15 cm. long; stipules triangular- to ovate-lanceolate, 

 5-8 mm. long; flowers in axillary clusters or sometimes solitary; pedicels slender, 2-12 mm. 

 long; bractlets linear-lanceolate, 3-5 mm. long; calyx pubescent, 4-6 mm. long at anthesis, the 

 deltoid-ovate lobes spreading to form a rotate scarious disk 12-16 mm. broad in fruit; petals 

 obovate, emarginate, 4-6 mm. long, white, tinged with rose or purple at tips and along the veins, 

 claw glabrous ; carpels 8-12, reniform-orbicular, transversely reticulate dorsally, dentate on the 

 angles, puberulent ; seed minutely papillate-puberulent. 



A wayside weed, chiefly in the Upper Sonoran Zone; Humboldt County, California, to Lower California and 

 Sonora; adventive to North Dakota, Missouri, and along the Atlantic seaboard. Type locality: described from 

 cultivated plants at Upsala, Sweden. April-Nov. 



3. Malva nicaeensis All. Bull Mallow. Fig. 3220. 



Malva nicaeensis All. FI. Pad. 2: 40. 1785. 



Malva borealis of authors. Not M. borealis Wallm. 



Malva pusilla of authors. Not M. pusilla With, nor M. pusilla Smith. 



Erect, spreadingly branched annual 0.3-1.5 m. high, sparsely pubescent throughout or the 

 stems glabrous. Leaves orbicular-cordate in outline, 2-10 cm. broad, shallowly 5-7-lobed, irreg- 

 ularly crenate; petioles 5-15 cm. long; stipules deltoid-ovate, acute, 3-8 mm. long; flowers m 

 axillary clusters ; pedicels 5-20 mm. long ; bractlets ovate- to oblong-lanceolate, acute, 4-8 mm. 

 long; calyx 4-6 mm. long and pubescent at anthesis, later glabrate, the lobes deltoid-ovate, 

 becoming scarious, finely reticulate and closely incurved over fruit at maturity ; petals obovate, 

 deeply emarginate, 8-12 mm. long, pale rose-lavender with darker veins, the claws white, villous ; 

 carpels 8-12, reniform-orbicular, 3-4 mm. high, rugose-reticulate on the back, angles smooth, 

 not dentate; seeds smooth, glabrous. 



An introduced weed in waste places, mostly in the Upper Sonoran Zone; Humboldt County southward to San 

 Bernardino, California, east to Montana. Type locality: Europe. April-Nov. 



