l62 MALVACEAE. 



Ceanothus sanguineus Pursh. Buckbrush. Shrub, 1-3 m. high, with 

 slender smooth usually reddish branchlets; leaves thin, elliptical or ovate, 

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

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

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

 common. This plant forms a very important and fattening food for sheep 

 on the summer range because of its oily seeds. 



Family 56. 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 scant. 



Bractlets none; stamens in two series. 228. Sidalcea, 162. 

 Bractlets three; stamens monadelphous. 



Stigmas terminal, capitate. 229. Sphaeralcea, 162. 



Stigmas on the inner face of the styles. 230. Malva, 163. 



228. SIDALCEA. 



Herbs; 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 ma- 

 turity from the short axis, indehiscent. 



Sidalcea oregana Gray. Perennial, puberulent throughout; stems erect, 

 about 1 m. high, branched above; lower leaves orbicular, about 9-cleft, the 

 segments incised; upper leaves more deeply cleft or parted, the segments 

 narrower; petioles mostly longer than the blades; stipules linear; racemes 

 strict, 10-30 cm. long; calyx densely puberulent, S-6 ram. long, the lobes 

 deltoid, acuminate; petals pink, about 2 cm. long; carpels roughened on the 

 back. Low ground, common. 



229. SPHAERALCEA. 



Herbs or shrubs; flowers in narrow panicle-like racemes; 

 involucre of 3 bractlets which are distinct or united at the base; 

 petals notched or entire; stamen-column anther-bearing at the 

 summit; styles stigmatic at the apex; carpels 2-valved; seeds 

 usually 2 or 3 in each cell. 



Leaves 2-4 cm. long; flowers scarlet. 5. munroana. 



Leaves 5-lS cm. long; flowers rose-colored. 5. rivularis. 



