MALVACEAE. 239 



pink, emarginate or erose at apex, about 2 cm. long; carpels rugose and 

 pubescent. 



In moist meadows, Willamette Valley, Oregon. S. asplenifolia Greene 

 found at Seattle in hay meadows is apparently the same and perhaps was 

 introduced with grass seed. 



Sidalcea virgata Howell. Perennial, green, thinly stellate puberulent 

 throughout, not at all pilose; stems erect, slender, 30-90 cm. high; basal 

 leaves long-petioled, orbicular, with 5-7 oblong obtuse toothed lobes, 5-15 

 cm. broad, puberulent beneath with stellate hairs, above mostly with simple 

 appressed hairs; cauline similar, more deeply lobed or even parted into narrow 

 subentire segments; racemes erect, loosely flowered; calyx densely puberulent, 

 the lobes ovate, acuminate, 6-8 mm. long; petals 1.5-2 cm. long, somewhat 

 erose, purple; carpels pale, puberulent. 



In open places, Willamette Valley, Oregon, and southward. 



317. MALVA. MALLOW. 



Pubescent or glabrous herbs; leaves dentate, lobed or dis- 

 sected; flowers perfect, axillary or terminal, solitary or clustered; 

 involucre 3-leaved; calyx 5-cleft; petals 5, obcordate; styles nu- 

 merous, stigmatic down the inner side; fruit depressed, separating 

 at maturity into as many 1-seeded indehiscent carpels as there 

 are styles. 



Flowers large, only in the upper axils; cauline leaves dis- 

 sected; carpels very hairy. M. moschata. 

 Flowers small, fascicled in the axils; leaves 5-9-lobed. 



Carpels puberulent, not reticulated. M. rotundifolia. 



Carpels glabrous, reticulated. M. parviflora. 



Malva moschata L. Musk Mallow. Perennial, somewhat musk-scented, 

 pubescent with simple hairs; stems erect or ascending, 30-60 cm. high; leaves 

 orbicular, the basal ones incisely cleft, the cauline 5-parted, the divisions 

 cleft or parted into narrow segments; flowers only from the upper axils, the 

 peduncles exceeding the leaves; petals rose-colored or white, much longer than 

 the sepals; carpels very hairy. 



Introduced and locally abundant. 



Malva rotundifolia L. Mallow. Cheeses. Annual or biennial, pubescent 

 or glabrous; stems prostrate, branched near the base, 20-60 cm. long; leaves 

 round-reniform, 5-7-lobed, crenate-dentate, 2-5 cm. broad; petioles long and 

 slender; flowers whitish, about 1 cm. broad, clustered in the axils; pedicels 

 slender, 1-2 cm. long; carpels 12-15, puberulent, not reticulated. 



A native of Europe, introduced in waste places. 



Malva parviflora L. Annual, glabrous or nearly so; stems ascending to 

 erect, 15-60 cm. high; leaves orbicular, cordate, crenate, somewhat angularly 

 lobed; flowers axillary, solitary or clustered; pedicels short; flowers small; 

 carpels glabrous, rough and netted on the back, somewhat wing-margined. 



A weed in waste land. 



Family 63. HYPERICACEAE. ST. JOHNSWORT FAMILY. 



Herbs or shrubs; leaves opposite, entire, mostly sessile, with 

 translucent or dark-colored glandular dots; stipules wanting; 



