28 MINNESOTA STUDIES IN PLANT SCIENCE 



Distribution: "Washington," according to Small, I.e. 

 Specimens examined : 



Washington : on wet rocks, mountains near Lower Cascades. W. N. Suksdorf, 

 No. 967, type, referred to Saxifraga nivalis L. Watson, in herb.; Skamania County, 

 May 29, 1886, W. N. Suksdorf (UMH). 



Oregon: Oregon City, April 1885, Thomas Howell (USNH 45801, and UMH), 

 referred to Saxifraga refiexa Hook. 



The filaments of the type collection of Micranthes aeqtiidentata Small 

 (Suksdorf No. 967) do not agree with Small's description. 



Saxifraga Marshallii Greene, Pitt. 1 :159. 1887-89. 

 Micranthes Marshallii (Greene) Small, N. Am. Fl. 22:2:145. 1905. 



Very similar to Saxifraga aequidentata (Small) Engl, and Irmsch, but 

 differs in its smaller size and in having clavate filaments and reflexed sepals. 

 Greene's specimen was from Hoopa Valley, California (Plate VII). 



Distribution. — Oregon to California (Small, I.e.). 



Specimens examined : 



California : ridges and meadows near Marble Mountains, Siskiyou County, alt. 

 7,000 ft., June, 1901, H. P. Chandler, No. 1613 (UMH, MBG 83916). 



Saxifraga microcarpa sp. nov. 



Receptaculum ovarii base adnatum, carpidia 2, nonnunquam 3, parva supra 

 basin glandula dilatata cincta conica et superne multo contracta; folliculi 

 parvi medio dilatati stylis brevibus stigmatibus parvis; filamenta latissl^ne 

 clavata antheris luteis ; sepala oblongo-ovata ciliolata base conspicue coalita 

 reflexa; petala elliptico-oblonga vel ovata base maxime contracta; folia 

 basalia ovata vel elliptica infra sparse pubescentia marginibus purpureis 

 grande dentatis vel serrato-dentatis ; scapi erecti superne paniculato-ramosi 

 ramis patentibus adscendentibus rigidis floribus parvis paucis vel multis. 



Receptacle adnate to the base of the ovary; carpels 2, sometimes 3, 

 small, surrounded above the base by a dilated gland, conical, and strongly 

 contracted above ; follicles small, dilated at the middle ; styles short ; stigmas 

 small ; filaments very broadly clavate, anthers yellow ; sepals oblong-ovate, 

 ciliolate, conspicuously united at the base, reflexed ; petals elliptic-oblong or 

 ovate, strongly contracted into a clawlike base; leaves basal, ovate or ellip- 

 tic, sparsely pubescent beneath, margins, purplish, coarsely dentate or serrate- 

 dentate ; scapes erect, paniculately branched above, the branches spreading, 

 ascending, rigid ; flowers small, few to many ; bracts linear-lanceolate, small, 

 cilioate; leaves bluish-green and brownish pubescent beneath; perennial from 

 a rather slender, fibrous-rooted caudex (Plate IX). 



Distribution. — Known only from the type locality. 



