SAXIFRAGACEAE. 175 



3. Leptasea austromontana (Wieg.) Small. (Saxifrage, bronchioles 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 Canon ; 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 Aagellaris 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 

 1'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. fimbriata. 

 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. parviflora. 



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; canon, Eagle 

 Co.; Pagosa Springs; Wahatoya Creek; Marshall Pass; Tola; 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. 



