STANDLEY FLORA OF GLACIER PARK. 353 



2. Sedum stenopetalum Pursh. Yellow stonecrop. At nearly all altitudes, 

 but most common above timber line, on open rocky slopes. Alta. to Calif., N. Mex., 

 and Nebr. — Stems 6 to 15 cm. liigb, tufted; leaves mostly basal, linear, 6 to 12 mm. 

 long; petals linear-lanceolate, 6 to 7 mm. long; pods 4 mm. long. 



A handsome plant, which remains in flower a long time. 



3. Sedum douglasii Hook. Frequent at low and middle altitudes, on open rocky 

 elopes. B. C. to Calif, and Mont. — Stems 10 to 20 cm. liigh; leaves linear-lanceolate, 

 1 to 2 cm. long; petals 6 to 10 mm. long; pods 3 to 4 mm. long. 



Nearly all the flowers are replaced by diminutive plants or bulblets, which fall 

 from the stems if touched, and presumably develop into new plants. 



39. PARNASSIACEAE. Parnassia Family. 



1. PARNASSIA L. 



Glabrous erect perennials; leaves clustered at the base of the plant, the flower 

 stems 1-flowered, naked or with a single bract; flowers white; petals 5, conspicuously 

 veined; stamens 5, with a fascicle of sterile stamens between each pair; fruit a 

 1-celled capsule. 



Petals fringed on the sides toward the base 1. P. fimbriata. 



Petals not fringed . 



Petals scarcely as long as the sepals, 3-veined; capsule twice as long as the sepals; 



bract none or borne near the base of the stem 2. P. kotzebuei. 



Petals longer than the sepals, often much longer, 5 to 9-veined; capsule less than 

 twice as long as the sepals; bract present, borne near the middle of the stem. 

 Petals nearly twice as long as the sepals; sterile stamens usually 9 to 15 in each 



fascicle 3. P. palustris. 



Petals only slightly longer than the sepals; stamens usually 7 to 9 in each 

 fascicle 4. P. montanensis. 



1. Parnassia fimbriata Konig. Fringed parnassia. Common at all altitudes 

 except the very highest, along streams, in bogs, or in wet meadows. Alaska to 

 Calif., N. Mex., and Alta. — Plants usually in dense clumps, 20 to 40 cm. high; 

 leaves kidney-shaped, 2 to 4 cm. wide; petals about 8 mm. long. 



The flowers are very showy and graceful. Above timber line the petals are often 

 only 6 mm. long. 



2. Parnassia kotzebuei Cham. Alpine parnassia. Edge of a brook at Grinnell 

 Glacier; liigh rock slide above Lake McDermott. Alaska to Wyo., Que., and 

 Greenl. — Leaves broadlj'' ovate or somewhat heart-shaped, 1 to 2 cm. long; stems 

 about 10 cm. high; petals about 5 mm. long. 



3. Parnassia palustris L. Meadow parnassia. In a wet thicket at St. Mary. 

 Alaska to Wyo., Que., and Lab.; also in Eur. and Asia.— Leaves heart-shaped, 1 to 3 

 cm. wide; stems 10 to 30 cm. high; petals 8 to 12 mm. long. 



4. Parnassia montanensis Fern. & Rydb. Montana parnassia. Edge of creek 

 near east entrance; open bog below Lake McDermott. B. C. to Sask. and Mont. — 

 Leaves heart-shaped or kidney-shaped, 1 to 2 cm. wide; stems 15 to 20 cm. high; 

 petals 8 to 10 mm. long. 



40. SAXIFRAGACEAE. Saxifrage Family. 



Perennial herbs; leaves usually alternate, often all borne at the base of the stem, 

 simple or compound; sepals 5; petals 5 oi none, small; stamens as many or twice as 

 many as the sepals; fruit a capsule or of 2 or more small pods. 

 Flowers in loose racemes; petals lobed. 



Leaves divided to the base; rootstocks with bulblets ... 1. LITHOPHRAGMA. 



Leaves shallowly lobed; rootstocks without bulblets 2. MITELLA. 



