Vol.. II.] 



SAXIFRAGE FAMILY. 



171 



i. Saxifraga oppositifolia L. Purple or 

 Mountain Saxifrage. (Fig. 1823.) 



Saxifraga oppositifolia L. Sp. PI. 402. 1753. 



Tufted, stems prostrate, densely leafy, 2 / -io / long. 

 Leaves sessile, ovate, obovate or nearly orbicular, 

 purplish, persistent, keeled, fleshy, opposite, or im- 

 bricated in 4 rows on the sterile shoots, obtuse, 

 punctate with 1-3 pores, i^-a.^" long, the margins 

 ciliate; flowers solitary, peduncled or nearly sessile, 

 4//_6// broad; calyx-lobes obtuse, much shorter than 

 the obovate purple petals; calyx free from the ovary 

 and capsule; follicles abruptly short-pointed; seeds 

 rugose. 



On wet rocks, Mt. Mansfield and Willoughby Moun- 

 tain, Vt.; Anticosti, Newfoundland and throughout 

 arctic America to Alaska, south in the Rocky Moun- 

 tains to Wyoming and to Oregon. Also in Europe and 

 Asia. Summer. 



2. Saxifraga aizoides L,. Yellow Moun- 

 tain Saxifrage. (Fig. 1824.) 



Saxifraga aizoides L. Sp. PI. 403. 1753. 



Tufted, glabrous, stems leafy, 2'-6' high. Leaves 

 alternate, linear, thick, fleshy, mucronate-tipped, 

 narrowed at the base, sessile, 4 // -9 // long, i"-i%" 

 wide, the margins often sparingly ciliate; flowers 

 several, corymbose, \"-l" broad; pedicels rather 

 slender; petals oblong, yellow and sometimes spot- 

 ted with orange, exceeding the ovate-oblong calyx- 

 lobes; carpels abruptly acuminate; base of the cap- 

 sule adnate to the calyx; seeds minutely rugose. 



On wet rocks, Newfoundland and Labrador to Ver- 

 mont and western New York, west through arctic 

 America to the Rocky Mountains, south to Michigan. 

 Also in alpine and arctic Europe and Asia. Summer. 

 Also called Sengreen Saxifrage. 



3. Saxifraga Hirculus L,. Yellow Marsh 

 Saxifrage. (Fig. 1825.) 



Saxifraga Hirculus L- Sp. PI. 402. 1753. 



Erect from a slender caudex, glabrous or somewhat 

 pubescent, simple, leafy, 4 / -io / high. Leaves alter- 

 nate, oblong or linear-oblong, entire, ^ / -i^ / long, the 

 lower petioled, the upper sessile; flower terminal, solitary 

 (rarely 2-4), bright yellow with scarlet spots, %'-*' 

 broad; calyx-lobes oval or oblong, obtuse, reflexed; 

 petals erect or ascending, obovate or oblong, about 3 

 times as long as the calyx-lobes; capsule free from the 

 calyx or nearly so, about 4" long, its beaks at length 

 diverging. 



In bogs, Labrador and arctic America. Also in northern 

 and alpine Europe and Asia. Summer. 



