SAXIFRAGACEAE. 175 



3. Leptasea austromontana (Wieg.) Small. (Saxifrage bronchiales Torr. ; 

 not L. : 5". austromontana Wieg.) On rocks and stony hills from Alb. and 

 B. C to N. M. and Wash. — Alt. 6000-13,000 ft. — Red Mountain; Ouray; 

 Minnehaha ; Mt. Garfield ; Halfway House, Pike's Peak ; Central City ; West 

 Spanish Peak; Little Veta Mountain; Black Caiion; Upper La Plata Canon; 

 Como ; Silver Plume; near Colorado Springs; Pagosa Peak; El Paso Co.; 

 Georgetown ; near Denver ; Andrew's Shetland ranch ; Caribou ; South 

 Boulder Peak ; Massif de 1' Arapahoe ; Palmer Lake ; headwaters of Clear 

 Creek ; Lake City ; near Empire ; west of Cameron Pass ; Graymont ; Ragged 

 Mountain, Gunnison Co. ; Estes Park ; Cameron Pass ; mountains above 

 Ouray ; Buffalo Pass ; Pennock's mountain ranch ; Devil's Causeway ; Twin 

 Lakes ; mountains between Sunshine and Ward ; Anita Peak. 



4. Leptasea flagellaris (Willd.) Small. (Saxifraga flagellaris Willd.) On 

 alpine peaks, among rocks, from Greenl. and Alaska to Colo, and Ariz. — 

 Alt. 10,000-14,000 ft. — Red Mountain; summit of Pike's Peak; Mt. Abram, 

 Ouray; Cumberland Basin, La Plata Mountains; Mt. Harvard; Pike's Peak; 

 West Spanish Peak; Gray's Peak; headwaters of Clear Creek; Massif de 

 I'Arapahoe. 



Family 63. PARNASSIACEAE Dumort. Grass-of-Parnassus 



Family. 



I. PARNASSIA L. Grass of Parnassus. 



Petals fimbriate on the sides ; basal leaf-blades reniform. 



Petals obovate, s-nerved ; staminodial scales with 5-9 lobes ; sepals elliptic. 



1. P. iimbriata. 

 Petals oblong, 3-nerved ; staminodial scales 3-s-lobed ; sepals narrowly lanceolate. 



2. P. riviilaris. 

 Petals not fimbricate ; basal leaf-blades tapering at the base. 3. P. parviftora. 



1. Parnassia fimbriata Banks. On banks of streams and in springy places 

 from Alb. and Alaska to Colo, and Calif. — Alt. 9000-11,000 ft.— Twin Lakes; 

 North Park ; Ruby ; Ragged Mountain, Gunnison Co. ; near Pagosa Peak ; 

 Cameron Pass ; Marshall Pass ; Caribou. 



2. Parnassia rivularis Osterhout. Along mountain brooks in Colo. — North 

 Park, near Wyoming line. 



3. Parnassia parviflora DC. In wet places from Que. and Alaska to Colo, 

 and Utah. — Alt. 7000-8000 ft.— North Park; Gypsum Creek; cafion. Eagle 

 Co.; Pagosa Springs; Wahatoya Creek; Marshall Pass; lola; Parlin; La 

 Veta; Lake John, North Park; Buena Vista; Big Muddy, Gunnison Co. 



Family 64. HYDRANGEACEAE Dumort. Hydrangea Family. 



Stamens 15 or more; ovary inferior. i. Philadelphus. 



Stamens 8-10 ; ovary mostly superior. 



Hypanthium adnate to the base of the i-celled ovary or incompletely 3-7-celled 



capsule ; petals 5. 2. Edwinia. 



Hypanthium adnate for half its length to the 4-celled ovary and capsule ; petals 4. 



3. Fendlera. 



