238 MALVACEAE. 



obtuse, rounded at base, finely serrate, glabrate above, paler and puberulent 

 beneath, 5-8 cm. long; petioles slender; panicles lateral, 6-10 cm. long, their 

 peduncles villous; flowers white; capsules smooth, 3-lobed. 

 In open woods, not common in our limits. 



Ceanothus thyrsiflorus Esch. California Lilac. Loosely branched 

 shrub, 1-5 m. high; twigs angled, brownish, glabrous or nearly so; leaves 

 elliptic, acute at base, obtuse at apex, finely dentate, 3-nerved, glabrous 

 except on the veins beneath, 2-5 cm. long, on short hairy petioles; flowers 

 usually blue, in dense compound terminal panicles; capsule globose, smooth. 



Western Oregon and California, on rocky slopes. Very showy when 

 in bloom. 



Family 62. MALVACEAE. MALLOW FAMILY. 

 Herbs or shrubs; leaves alternate, palmately- veined, with 

 stipules; flowers regular, showy; peduncles axillary, jointed; 

 calyx valvate; sepals 5, united at base, often subtended by an 

 involucre of numerous bractlets; corolla convolute; petals 5, 

 their bases united with each other and with the stamen-column; 

 stamens numerous, monadelphous, in a column; pistils several, 

 the ovaries united in a ring or forming a several-celled pod; 

 endosperm scanty. 



Bractlets none; stamens in two series. 316. SIDALCEA, 238. 



Bractlets 3; stamens monadelphous. 317. MALVA, 239. 



316. SIDALCEA. 



Herbs (ours all perennials) ; leaves rounded, mostly lobed or 

 parted; flowers pink or red, in a narrow terminal raceme or spike; 

 involucre none; stamen-column double, the filaments of the outer 

 series united usually into 5 sets opposite the petals; styles filiform, 

 stigmatic on the inner surface; carpels 5-9, 1-ovuled, separating 

 at maturity from the short axis, indehiscent. 



Flowers red; mature carpels smooth. S. hendersonii. 

 Flowers pink; mature carpels rugose. 



Stems hirsute. S. campestris. 



Stems stellate-pubescent. S. virgata. 



Sidalcea hendersonii Wats. Perennial, glabrous or nearly so and bright 

 green; stems erect, 60-90 cm. high, nearly simple; leaves orbicular, deeply 

 5-7-cleft, the segments merely lobed or toothed; flowers deep rose-colored, in 

 terminal racemes; bracts linear, exceeding the pedicels; calyx-lobes ovate, 

 acuminate, 12-15 mm. long; petals 2.5 cm. long; carpels glabrous, not rugose. 



In marshes near the sea shore, Vancouver Island, British Columbia, to 

 Oregon. Abundant near Everett, Washington. 



Sidalcea campestris Greene. Perennial, pale green, pubescent with i><th 

 simple and stellate hairs; stems 30-90 cm. high, often branched above, bristly- 

 hirsute; leaves orbicular, the leaves 5-9-lobed or cleft, the upper deeply 5-9- 

 parted, the segments divided into narrow lobes; petioles longer than the blades; 

 racemes erect, rather dense; calyx usually canescent, 8-10 mm. long; petals 



