12 PROCEEDINGS OF THE AMERICAN ACADEMY 



Saxifraga Unalaschensis, Sternb. Saxifr. Suppl. ii. 9, which 

 Engler appends to S. Dahurica, ia an Aleutian and Arctic Alaskan 

 species, recently collected by Dall and by Muir, also by Dr. Steiueger 

 at Copper Island on the Asiatic side. It must also be S. flahelUfolia^ 

 R. Brown in Torr. & Gray, Fl. i. 569. 



Saxifraga Lyalli, Engler, Mouogr. Saxifr. 141, a well-marked 

 species, of the northern Rocky Mountains, found also by C. Wright 

 on the Asiatic side of Behring Strait. 



Saxifraga nudicaulis, Don, Monogr. Saxifr. 366. Tliis is 

 S. neglecta. Bray in Sternb. Saxifr. Suppl. i. 9, ii. 36, as well as 

 S. vaginalis, Turcz. in Ledeb. Fl. Ross. ii. 220. Don's plant was col- 

 lected by Nelson, probably iu Arctic Alaska (as the name is now 

 used), and Menzies collected it in the same region. Our specimens 

 (coll. Dall and C. Wright) are from the Asiatic shore and islands, and 

 from Ajan, by Tiling. Don's name and that in Sternberg were pub- 

 lished in the same year (1822); but, as Don's memoir was " Read, 

 Feb. 20, 1821," we may perhaps assume some priority in publication. 



Saxifraga punctata, L. (with synonymy as detailed by Engler), 

 is an unmistakable species. But it passes by many gradations into 



Var. NANA, an Arctic form, also high alpine iu the more northern 

 Rocky JNIountaius, with scape barely a span high, bearing a simple 

 and small cyme or a close glomeriile of few flowers, the leaves much 

 reduced in size and only 7-Il-lubulate. This abounds on the coast 

 of Arctic Alaska, within Behring Strait, and answers to »S. Nelsoniaiia, 

 Don, only more dwarfed, and the inflorescence condensed ; so that no 

 one would refer it to S. punctata, except for the intermediate forms. 

 Burke collected a similar form on the higher Rocky Mountains. 



Var. ACL'TiDENTATA, Engler, is founded on a plant of Lyall's col- 

 lection from " Cascade Mountains, South Clear Creek." A specimen 

 in our herbarium which agrees with the character is ticketed '* Rocky 

 Mountains, hit. 49°, at 6,500 feet alt." It is a lai-ge form, with the 

 slightly cordate base of the leaves abruptly decurrent into a partly 

 winged petiole, the numerous teeth unusually coarse and acute : and 

 some smaller leaves from the rootstock are cuneate. 



Saxifraga fragarioides, Greene in Bull. Torr. Club. viii. 121 

 (1881), a most peculiar species, is one of Mr. Pringle's discoveries, 

 in the northern part of California, on a high mountain west of Mt. 

 Shasta. " The leaves," as Mr. Greene states, " are a most precise 

 imitation of the leaflets of the common Wild Strawberry, both as 

 regards their form, color, texture, and even size." The scape is foliose- 

 bracteate, and the lignescent tufted rootstocks are peculiar. 



