Flora of the Palonse Region 89 



vShrubs. 



Leaves alternate. 150. ribes. 



Leaves opposite. 149- Philadelphia. 



Herbs. 



Ovary 2-celled: placentae axile. 144. SAXIFRAGA. 



Ovary i-celled: placentae parietal. 

 Petals small and entire or none. 



Stamens 10. 146. tiarella. 



Stamens 5. 147. heuchera. 



Petals pinnatifid or 3-cleft into thread-like divisions. 



148. MiTELLA. 

 Petals cleft or lobed. 145. tellima. 



144. SAXIFRAGA. 



Chiefly perennial herbs: stem short or none: radical leaves tufted; 

 cauline mostly alternate: flowers perfect, solitary or in cymes or 

 cymose panicles: calyx 5-lobed, free or adhering to the base of the 

 ovary: petals 5, entire, perigynotis: stamens 10, perigynous: car- 

 pels 2, nearly distinct or uniting into a 2-celled ovary; placentae 

 axile; styles distinct: capsules 2-beaked, 2-celled, sometimes two 

 almost separate follicles. 



Petals narrowly obovate, shorter than the calyx-lobes. S. Columbian a. 

 Petals obovate, twice as long as the calyx-lobes. S. fragosa. 



S. Columbiana Piper. Erect, somewhat viscid-pubescent throughout, 30- 

 40 cm. high: leaves all radical, ovate or lanceolate, obtuse, petioled, entire 

 or nearly so, the blades 2-4 cm. long: inflorescence a narrow pyramidal 

 branched cyme: flowers greenish, 5-6 mm. in diameter: calyx-lobes triangu- 

 lar-ovate, obtuse, longer than the short tube, becoming reflexed: petals nar- 

 rowly obovate, shorter than the calyx-lobes: stamens very short: ovary disk- 

 like, crenate on the edges, half-inferior. Springy places. 



S. fragosa Suksdorf. [S. claytoniaefolia Canby.) Very similar to the 

 above, the leaves usually broader and larger: flowers white, larger: cyme 

 usually looser: calyx-lobes longer than the tube, erect: petals obovate, ob- 

 tuse, twice as long as the calyx-lobes. Mossy bluffs near Almota. 



145. TELLIMA. 



Perennial herbs: stem simple: leaves few, round-cordate, toothed 

 or palmately-divided, chiefly alternate; petioles with stipule-like 

 dilations at the base: flowers in a single terminal raceme: calyx 

 5-lobed, campanulate or turbinate, the base adhering to the base 

 or lower half of the ovary: petals 5, white, whitish or pink, on the 

 throat or in the sinuses of the calyx, cleft or lobed: stamens 10, 

 short, included: ovary short, 1 -celled, with 2 or 3 parietal placen- 

 tae; styles 2 or 3. very short: capsule conical, slightly 2-3-beaked; 

 seeds very numerous. Our species bear propagating bulblets at 

 the base and frequently in the axils of the upper leaves. 



Calyx obconic: petals 3-parted. T. parviflora. 



Calyx bell-shaped: petals 3-7-parted. T. TKNELLA. 



