194 SAXIFRAGACEAE. 



orbicular, cordate, long-pctiolcd, 3-7-lobed, the lobes crcnate-dentate; cau- 

 line 1-3, similar but smaller, short-petioled; panicle narrow, loose, 5-15 

 cm. long; flowers white; petals small, thread-like. 



Common in woods at low altitudes in the mountains. 



Tiarella trifoliata L. Sparsely hirsute, the inflorescence glandular; stems 

 slender, erect or ascending, 15-40 cm. high; basal leaves long-petioled, trifolio- 

 late, the middle leaflet cuneate-obovate, 3-lobed and toothed; lateral leaflets 

 oblique; cauline leaves similar, smaller, short-petioled; panicle narrow; sepals 

 oblong, acute; petals filiform, white, twice as long as the sepals; carpels unequal, 

 membranaceous, the larger 6-7 mm. long. 

 [Common in moist woods. 



Tiarella laciniata Hook. Similar in size and habit to T. trifoliata; leaves 

 trifoliolate, the middle leaflet 3-cleft, the segments deeply incised; lateral 

 leaflets oblique, 2-cleft, the segments incised. 



A rare species, known from Vancouver Island, British Columbia, Mount 

 Constitution and Skamania County, Washington. 



257. 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; styles 2 or 3, 

 very short; ovary short, 1-celled, with 2 or 3 parietal placentae; 

 capsule conical, slightly 3-beaked; seeds very numerous. 



Calyx campanulate; petals sessile, pinnately parted; plant 



not producing bulblets. T. grandiflora. 



Calyx obconic; petals clawed, palmately cleft; plant producing 



bulblets. T. parviflora. 



Tellima grandiflora (Pursh) Dougl. Hirsutely pubescent, the inflores- 

 cence glandular; stems erect, 30-60 cm. high, bearing 2 or 3 nearly sessile 

 smaller leaves; basal leaves cordate-orbicular, shallowly 3-9-lobed, dentate 

 with broad teeth, 5-10 cm. broad, the hairy petioles 10-20 cm. long; raceme 

 somewhat one-sided; calyx campanulate, 8 mm. long, the lobes triangular; 

 petals pinnately divided into filiform segments, greenish at first, gradually 

 changing to bright red. 



Common in moist woods. T. odorata Howell and T. hreviflora Rydberg, 

 each based mainly on slight calyx characters, are scarcely distinct. 



Tellima parviflora Hook. Perennial, propagating by bulblets; herbage 

 rough-pubescent; stems slender, 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. 



In gravelly or rocky soil in open places. Bulblets are sometimes formed 

 in the inflorescence. 



258. MITELLA. AIitrewort. 



Low slender perennial herbs; leaves simple, mostly radical, 

 long-petioled, ovate or orbicular; cauline rarely few, usually 



