1 16 Flora of the Palousc Region 



M. rotuildifolia L. Annual or biennial, pubescent or glabrous: steins 

 prostrate, branched near the base, 20-60 cm. long: leaves round-renifonn, 

 5-7-lobed. crenate-dentate, 2-5 cm. broad; petioles long and slender: flowers 

 pale blue, about 1 cm. broad, clustered in the axils; pedicels slender, 1-2 cm. 

 long: carpels 12-15, puberulent, not reticulated. A weed sparingly intro- 

 duced. 



1S8. SIDALCEA. 



Herbs: leaves rounded, mostly lobed or parted: flowers usually 

 purple, 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, i-ovuled, separating at maturity 

 from the short axis, indehiscent. 



S. oregana Gray. Perennial, puberulent throughout: stems erect, about 

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

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

 rower; petioles mostly longer than the blades; stipules linear: racemes strict, 

 10-30 cm. long: calyx densely puberulent, 5-6 mm. long, the lobes deltoid, 

 acuminate: petals pink, about 2 cm. long: carpels roughened on the back. 

 Low ground, common. 



189. SPHAERAIXEA. 



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

 volucre 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 usu- 

 ally 2-3 in each cell. 



Leaves 2-4 cm. long: flowers scarlet. S. muxroaxa. 



Leaves 5-15 cm. long: flowers rose-colored. 8. acerifolia. 



S. munroana Spach. Perennial, hoary-pubescent throughout: stems 

 prostrate or decumbent, rarely erect, 20-40 cm. long: leaves broadly ovate, 

 crenulately toothed or lobed, 2-4 cm. long; petioles mostly as long as the 

 blades: panicle narrow, 10-30 cm. long: flowers bright scarlet: petals about 

 1 cm. long: carpels reniform, oval, 3-4 mm. long. vSandy ground near Lew- 

 iston. 



S. acerifolia Nutt. Stout, perennial, 1-1.5 mm. tall, green, sparsely 

 pubescent: leaves large, palmately 5-7-lobed, the lobes acute, coarsely den- 

 tate; petioles stout, mostly as long as the blades: panicle narrow, erect, 15- 

 60 cm. long: petals rose-colored, 2-3 cm. long: carpels very bristly, 2 cm. 

 long. Common along Snake River, otherwise infrequent. 



Family 48. HYPERICACEAE. 



Herbs or shrubs: leaves opposite, entire, truncate, with trans- 

 lucent or dark-colored glandular dots, without stipules: flowers 

 perfect, regular: sepals 4-5: petals 4-5, hypogynous: stamens 



