176 PARNASSIACEAE. 



1. PHILADELPHUS L. Syeinga, Mock Orangeg. 



Hypanthium 4-5 mm. long ; sepals acuminate ; leaves much paler beneath ; styles 

 united. i. f. microphyllus. 



Hypanthium about 2 mm. long or in fruit 3-4 mm. long ; sepals acute. 

 Styles wholly or nearly wholly united ; stigmas usually oblong. 



2. P. occidentalis. 

 Styles with the upper half distinct ; stigmas decidedly clavate. 



3. P. minutus. 



1. Philadelphus microphyllus A. Gray. Mountains of N. M. and Colo. — 

 Brantly Caiion; Caiion City (Brandegee), "Colorado." 



2. Philadelphus occidentalis A. Nels. Mountains from Wyo. to Colo, and 

 Utah. — Alt. 5000-7000 ft. — Caiion City; Glenwood Springs (A. Nelson). 



3. Philadelphus minutus Rydb. Cations of Colo. — Alt. 7000 ft. — Black 

 Caiion of the Gunnison. 



2. EDWINIA Heller. 



I. Edwinia americana (T. & G.) Heller. (Jamesia americana T. & G.) 

 On cliffs, mountain sides and in cations, from Wyo. and Utah to N. M. — 

 Alt. 5000-10,000 ft. — Rist Caiion; Minnehaha; Pike's Peak; Rock Mountain 

 Pass ; Ward ; West Spanish Peak ; Central City ; Engelmann's Cafion ; North 

 Cheyenne Caiion ; Green Mountain Falls ; foot-hills, Larimer Co. ; George- 

 town ; Caiion City ; headwaters of Clear Creek and alpine ridges east of Mid- 

 dle Park; Manitou; Graymont; Narrows, Moon's ranch; Horsetooth Gulch; 

 Soldier Caiion ; Howe's Gulch ; Pennock's mountain ranch ; mountains be- 

 tween Sunshine and Ward ; Eldora to Baltimore. 



3. FENDLERA Engelm. & Gray. 



i. Fendlera rupicola Engelm. & Gray. On hills from Colo, to N. M. and 

 Ariz.; also in Mex. — Alt. 5000-8000 ft. — Durango; Mancos; Cerro Summit; 

 Los Pinos ; Hotchkiss, Delta Co. ; Dolores. 



Family 65. GROSSULARIACEAE. Gooseberry Family. 

 I. RIBES L. Goose-berry, Currant. 



Leaves plicate in vernation. 



Stems usually with subaxillary spines. 



Racemes 1-4-flowered ; hypanthium campanulate to tubular. 



Calyx and tube of hypanthium externally glabrous or the former with a few 

 scattered hairs. 

 Peduncles and bracts more or less glandular or pubescent; leaves finely 



puberulent. 1. R. Purpusi. 



Peduncles and bracts glabrous or the latter ciliate ; leaf-blades cordate 

 at the base, in age glabrose and shining. 2. R, vallicola. 



Calyx and hypanthium pubescent. 3. R. leptanthum. 



Racemes several-flowered ; hypanthium saucer-shaped. 



Leaves densely pubescent ; fruit red. 4. R. lentum. 



Leaves glabrate ; fruit black. 5. R. parvulum. 



Stem unarmed ; raceme many-flowered. 



