SAXIFRAGACEAE. 129 



Mitella caulescens Nutt. Stems slender, 25-40 cm. high, bearing 1-3 

 petioled alternate leaves; basal leaves broadly ovate, cordate, 5-7-lobed, 

 crenate-dentate, sparsely hairy; flowers greenish, in a loose raceme; petals 

 pinnately cleft into 7-9 filiform lobes; plants producing runners in summer. 

 In moist woods, rare. 



Mitella stauropetala Piper. Scapes 30-50 cm. high, sparsely pubescent 

 below, minutely glandular above; leaves all basal, orbicular, indistinctly 

 5-lobed, slightly crenate, reniform, with a narrow sinus, sparsely pilose and 

 ciliate; raceme one-sided, 6-12 cm. long, 10-25-flowered; flowers white, nearly 

 sessile; calyx-lobes oblong-ovate, crenulate, 3-nerved; petals twice as long as 

 the sepals, 3-parted for half their length into filiform lobes, the lateral lobes 

 divaricate. In coniferous woods in the mountains. 



181. TELLIMA. 



Perennial herbs; stem simple or branched at the base; leaves 

 few, round-cordate, toothed or palmately-divided, chiefly alter- 

 nate; 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 placentae; styles 2 or 3, very short; 

 capsule conical, slightly 2- or 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. tenella. 



Tellima parviflora Hook. Rough-pubescent, 15-30 cm. high; leaves 

 palmately 3-5-parted; segments cuneate, 3-cleft, the lobes sometimes again 

 cleft; pedicels erect, mostly as long as or longer than the calyx; calyx 4-6 mm. 

 long, obconic or club-shaped; petals pink, deeply 3-cleft; ovary half-inferior. 

 Stony soil, common. 



Tellima tenella (Nutt.) Walp. Much like T. parviflora, smaller and more 

 slender, pubescent, minutely glandular; pedicels spreading; calyx bell-shaped, 

 3 mm. long; petals 3-7-cleft into linear lobes; ovary free except at base. 

 With T. parviflora but blooming about two weeks earlier. 



182. TIARELLA. 



Slender perennial herbs; leaves palmately lobed, sometimes 

 with small stipules; flowers small, white, in a terminal raceme or 

 panicle; calyx-tube campanulate, 5-parted, nearly free from the 

 ovary; petals 5, entire, small, with short claws; stamens 10; 

 filaments long and slender; styles 2; ovary 1-celled, 2-horned; 

 placentae parietal, becoming almost basal in fruit; ovules 

 numerous; capsule 1-celled, 2-valved, the valves usually unequal; 

 seeds usually few. 



Tiarella unifoliata Hook. Pubescent throughout or nearly glabrous; 

 stems simple, 15-40 cm. high, erect or ascending; radical leaves ovate or 

 10 



