178 TWELFTH ANNUAL REPORT. 



(abundant) Miss Cathcart, Miss Field; Rock county, Leiberg; Pipestone quarry, Mrs. 

 Bennett. [Manitoba, Macoun; Nebraska, Aughey.] 



W. Ilvensis, R. Br. Rusty Woodsia. 



Throughout the state, excepting far southward. North of lake Superior (abundant), 

 Roberts; lake of the Woods, Dawson; Taylor's Falls and Duluth (common), Miss Cath- 

 cart, Miss Field; Stearns county, Mrs. Blaisdell; upper Minnesota river, Parry; Red- 

 wood Falls, Miss Butler. " A dwarf form, one to three Inches high, yet fruiting freely, 

 was common in the clefts of the rocks on the summit of Carlton's Peak." Roberts. 



[W. hyperborea, R.Br., found by Prof. Afacounon the north shore of lake Superior, 

 should be looked for in northern Minnesota. It is nearly related to W. Ilvensis, but is 

 tenderer in its texture, much less chaffy, and narrower in outline, with shorter, more 

 obtuse, and less divided pinnae. Eaton's Ferns of JV. A .] 



W. glabella, R. Br. Smooth "Woodsia. 



North of lake Superior (at Kakabeka falls), Macoun; doubtless also to be found In 

 northern Minnesota ; Stillwater, Miss Field. 



W-Oregana, Eaton. Oregon Woodsia. 



South shore of lake Superior and westward [Keweenaw peninsula and lake Winni- 

 peg] ; doubtless in northern Minnesota ; also at Stillwater, Miss Field . 



W. scopulina, Eiton.* Rocky Mountain Woodsia. 



Collected by Miss Cathcart at Duluth, and at Taylor's Falls on the St. Croix river ; 

 Lyons creek below Minneopa falls. Blue Earth county, Gedge. "Growing in dense 

 masses on rocks and in crevices, from Oregon to Mono Pass. California, and extending 

 eastward to Dacotah, Minnesota and Colorado. . . . The largest specimens are 

 from Minnesota and Colorado." Eaton's Ferns of North America. 



DICKSONIA, L'Her. Dicksonia. 



D. pilosiuscula, Willd. (D. punctilobula, Kunze.) Fine-haired Mountain 

 Fern. Hay- scented Fern. 

 Miss Cathcart. Stearns county, Campbell; lake Pepin, Miss Manning. Rare> 

 Southeast. 



OSMUND A, L. Flowering Fern. 



O. regalis, L. Royal- Fern. Flowering Fern. 



Frequent throughout the state, excepting far southward. North of lake Superior 

 (common along Devil's Track river), Roberts; Anoka county, etc., Upham; Saint Paul 

 and northward, Miss Cathcart, Miss Field. 



O. Claytoniana, L. Clayton's (Interrupted) Flowering Fern. 

 Common, or frequent, throughout the state. 



O. ciniiainomea, L. Cinnamon-Fern. 



Throughout the state, excepting perhaps northwestward. Common north of lake 

 Superior and at Minneapolis, Roberts; Anoka county, etc., Upham; Taylor's Falls, Miss 

 Cathcart, Miss Field; Northfleld, Rice county, Chaney; lake Pepin, Miss Manning, 



*WooDSiA SCOPULINA, Eaton. Root-stocks short, creeping, chaffy, forming large 

 tufts or patches ; stalks two to four inches high, not jointed, bright ferruginous near the 

 base, paler and stramineous upwards, puberulent like the rachis and the under surface 

 of the frond, with minute jointed hairs and stalked glands ; fronds lanceolate-oblong^ 

 four to eight inches long, pinnate ; pinnae numerous, eight to fifteen lines long, oblong- 

 ovate, sub-acute, deeply pinnatifld with five to eight pairs of short ovate or oblong 

 obtuse crenulate or toothed divisions ; sori sub-marginal ; indusium very delicate, 

 deeply cleft into narrow segments which terminate in short hairs composed of irregular 

 cylindrical cells. . . . Nearly like W. Oregana. Eaton's Ferns of J\ . A. 



