367 



in Oref^on. But in addition to these leaf-characters, the flower 

 furnishes good points of distinction. 



The calyx-segments in Saxifmga Sierrae are suborbicular and 

 broader than long (except in Mr. Howell's specimens, where the 

 whole vegetative and floral systems are abnormally elongated), 

 the calyx-segments in .S". intcgrifolia are ovate and longer than 

 broad ; the petals are ovate or broadly oblong and retuse at the 

 apex, as opposed to the obovate petals of S. integrifolia with their 

 rounded apices. 



Saxifraga reflexa Hook. Fl. Bor. Am. i : 249. pi. 85. 1833. 

 Several unsuccessful attempts to reestablish this rare species 

 have been made. Taking Hooker's excellent plate as a basis, 

 and this is all we have to go on besides his description, I find that 

 the following numbers from the collections of the Northern Trans- 

 continental Survey, distributed as Saxifraga nivalis, are 5. rcfiexa : 

 51a Scribner, 740 and 741 Tweedy, 757 Brandegee and 1 1 1 Canby. 

 These are the only representatives of S. reflexa I have seen and 

 are all in the Canby herbarium. 



Saxifraga Montanensis n. sp. 



Scapose, perennial by a stout horizontal or ascending rootstock* 

 coarse, stout, glandular-pilose. Leaves basal, ovate or lanceolate, 

 .5-1.5 cm. long, leathery, obtuse or acute, serrate-dentate, nearly 

 sessile or apparently sessile on account of the broadly winged 

 and dilated petiole ; scapes solitary, erect, 3-6 dm. tall, stout (6-I i 

 mm. in diameter), paniculately branched above, the branches 

 usually shorter than the internodes; flowers greenish, almost ii 

 mm. broad, in dense glomerate cymules; calyx turbinate-cam- 

 panulate, 5 -parted to below the middle, its tube adnate to the 

 ovary, its segments triangular-ovate, obtuse, at length deflexed ; 

 petals 5, greenish, lanceolate or linear, often slightly oblique, 3.5 

 mm. long, obtuse, 3-nerved, the lateral nerves arising below the 

 middle, running close to the mid-nerve; filaments subulate, thrice 

 shorter than the petals ; fruit not seen. 



Southwestern Montana, in bogs at i ,850 meters elevation. Col- 

 lected by Mr. Frank Tweedy (No. 58), July, 1888. Also found 

 by Prof. F. D. Kelsey at Millan, Montana. The proposed species 

 stands between Saxifraga Sierrae and 5. Pennsylvanica. It differs 

 from the former in its harsh pubescence which gives it a dull 

 green color and in its comparatively small greenish flowers. From 



