STANDLEY FLORA OF GLACIER PARK. 355 



4. SUKSDORFIA A. Gray. 



1. Suksdorfia violacea A. Gray. Wet mossy cliffs at Baring Falls. Wash, and 



Oreg. to Mont. — Plants 10 to 20 cm. high, with bulblet-bearing rootstocks, somewhat 



glandular-hairy; lower leaves kidney-shaped, 1 to 3 cm. wide, with rounded teeth; 



upper leaves 2 to 4-toothed at the tip; flowers few, panicled; petals pink, 5 to 7 mm. 



long, clawed. 



5. HEUCHERA L. Alumroot. 



Perennials with thick rootstocks; leaves basal, slender-petioled, rounded or kidney- 

 shaped, shallowly or deeply lobed; flowers in spikelike panicles, on naked stalks; 

 petals entire; stamens 5, opposite the sepals; capsule 2-beaked. 



Flowers 3 to 4 mm. long; leaves lobed nearly halfway to the base. 



1. H. flabellifolia. 

 Flowers about 7 mm. long; leaves shallowly lobed 2. H. glabella. 



1. Heuchera flabellifolia Rydb. Hills at east entrance, and on Mt. Henry, 

 Umbach. Alta. to Wyo.— Stems 20 to 30 cm. high, finely glandular-hairy; leaves 

 1.5 to 3 cm. wide, glandular; flowers greenish. 



2. Heuchera glabella Torr. & Gray. Common at nearly all altitudes, usually on 

 cliffs or rocks, sometimes on open slopes, in dry woods or alpine meadows, or on 

 prairie. Wash, and Oreg. to Mont, and Alta. — Leaves long-stalked, rounded or 

 heart-shaped, 2 to 5 cm. wide, glabrous or nearly so, with shallow lobes and teeth; 

 flower stalk 20 to 50 cm. high, nearly glabrous; flowers yellowish white. 



In dry weather or in late summer the leaves turn bronze or deep red. The flowers 



are rather handsome. The Blackfoot Indians used the macerated plant as a remedy 



for sores and swellings. 



6. TIARELLA L. 



1. Tiarella unifoliata Hook. Lacefi.ower. Common or abundant at middle 

 altitudes, in moist woods; sometimes at low altitudes and in meadows above timber 

 line. B. C. to Calif, and Mont.— Perennial %\ith thick rootstocks; stems 15 to 40 cm. 

 high, glabrous or nearly so, with 1 to 4 leaves; basal leaves slender-petioled, broadly 

 heart-shaped, 4 to 10 cm. long, 3 or 5-lobed and toothed, finely hairy; flowers white, 

 in narrow panicles; stamens 10, longer than the petals. 



One of the most conspicuous plants of moist woods, forming dense banks all along 

 the trails. The flowers are very delicate and give the effect of a cloud of mist above 

 the masses of deep green leaves; they last almost all summer. 



7. LEPTARRHENA R. Br. 



1. Leptarrhena pyrolifolia (Don) R. Br. Leatherleaf saxifrage. Abundant 

 above timber line, in wet meadows or on rocky slopes, often along brooks. Alaska 

 to Wash, and Mont.— Plants 10 to 20 cm. high, from a short thick leafy base; leaves 

 mostly at base of stem, oblong, 3 to 8 cm. long, thick and leathery, toothed, deep 

 green and shining on the upper surface, pale beneath; flower stalk bearing 1 or 2 

 leaves, the flowers in a narrow panicle; petals white, 2 to 2.5 mm. long, persisting in 

 fruit. 



A handsome plant, often forming great mats. The fruit is tinged with red or purple. 



8. SAXIFRAGA L. Saxifrage. 

 Perennials with naked or leafy stems; leaves entire, toothed, or lobed; flowers 

 mostly in cymes, sometimes solitary; petals entire; stamens 10; fruit 2-celled. 



Leaves entire. 



Leaves opposite, obtuse; flowers solitary, purple 1- S. oppositifolia. 



Leaves alternate, acute; flowers in cymes, wliite 2. S. bronchialis. 



2048—21 9 



