T. Holm — Studies in the Cyperacece. 269 



thai informs us (in litteris) that he has, also, seen specimens 

 from Idaho, Washington and Oregon, which he considers iden- 

 tical with this species. 



C. polytrichoides Mnhl. 



Edge of marsh, Kussiloff. 

 C. tenella Schk. 



In marsh, not abundant, Kussiloff. 



The specimens are somewhat shorter and more robust than 

 the typical plant from Scandinavia and Rocky Mountains, but 

 the structure of the spikes and utriculus is the same. 



C. circinata C. A. Mey. 



On rocky hilltops, 900 to 1200 feet alt., Kadiak. 



This species is one of the very rarest, and has only been 

 found a few times before, perhaps not very far from where 

 Dr. Evans collected it. Meyer, who is the author of the spe- 

 cies, gives the locality only as " in rupibus Unalaschkse," while 

 Prescott, who described the Cyperacese for Bongard, states 

 that it was found on " the island of Sitcha" ; according to 

 Ledebour, Redowsky is credited with having collected the 

 plant somewhere in Kamtschatka, though with a query. In 

 later years Professor John Macoun has reported the species as 

 having been found by Barclay near Sitka, but these specimens, 

 which we have seen, do not belong to C. circinata, but to O. 

 pyrenaica Wahlbg. ; the species occurs, however, on the Shu- 

 magin Islands, where it was collected by Mr. Harrington in 

 1871-72, and of which a few specimens are preserved in the 

 National Herbarium. But we find no record of it in Traut- 

 vetter's works, in Kjellman's or Franchet's, nor is it included 

 in James Macoun's list of plants from the Pribilof Islands. 

 The species must be very local, and seems to be confined to 

 the Alaskan coast with adjacent islands. 

 C. Gmelini Hook. 



Among rocks on beach, Sitka ; on flats, Kussiloff ; abundant 

 at Homer, Cook inlet. 

 C. nigella Boott. 



A very few specimens were collected on Kadiak, where it 

 grew together with C. circinata. 

 0. vulgaris Fr. 



Growing in small tufts in wet places, Wrangell. 

 C. interrupter Bceckl. 



Abundant at Wrangell, grows in dense tufts. 

 C. lugens Holm, nov. sp. (fig. A). 



Roots thick, very hairy ; rhizome ascending, stoloniferous ; 

 culm from 30 to 45 cm in height, slender, but stiff, sharply 



