THE PLANTS OF THE PRIBILOF ISLANDS. 573 



with G. Kmula, Fries, but the leaves are narrower and the short-peduncled spikes 

 erect. 



144. Carex salina, Wahl. 



This species, in one or other. of its many forms, is common on both islands. The 

 commonest of these is 0. salina, subsp. cuspidata, Wahl., var. haematolepis, Drej., 

 which grows everywhere on grassy uplands. The form thulensis. Th. Fries (Herb. 

 No. 16618), was collected in a slightly saline marsh. With it grew the var. subspa- 

 thacea, Wormskj. (Herb. No. 16619). The varietal determinations given above were 

 made by Mr. Kukenthal. 



The Garex rigida bigelovii of Dr. Merriam's list I believe to be this species, though 

 I have not seen his specimens. 



145. Carex cryptocarpa, C..A. Meyer. 

 Common on both islands. 



146. Carex macroohaeta, C. A. Meyer. 



C. podocarpa, R. Br. 

 Common on both islands; the form gracilior found in one locality only. 



147. Carex macroohaeta, C. A. Meyer, var. subrigida, Geo. Kukeuthal. 



Low, culm and leaves rather broad and very rigid, the leaves longer than the 

 culm; the lowest spike female at the base ; all the spikes longer and much narrower 

 than in the type, club-shaped, rather loose flowered toward the base; scales hardly 

 or not at all aristate. Herb. No. 16615. 



Perhaps a hybrid between G. macroohaeta and G. haematolepis, though as these 

 species belong to two different sections and there is little evidence of hybridization 

 apart from the general appearance of the plant, I prefer to adopt the name given it 

 by Mr. Kukenthal. 



148. Carex membranopacta, Bailey, Bnll. Torr. Bot. Club, Vol. XX, p. 428, 1893. 



Very abundant in a large depression around a pond on St. Paul Island. This 

 carex, at least where found by me, grows in clumps and is decumbent in habit, cover- 

 ing an area of from 24 to 30 inches in diameter. Dried specimens give no hint that 

 the plant is not erect in habit; but the fact is that on St. Paul Island, at least, it lies 

 flat on the ground, even when very young. At maturity the whole plant is frequently 

 covered by the surrounding herbage. Herb. No. 16608, distributed as G. compacta, 

 E. Br. The C. saxatilis of Dr. Merriam's list I take to be this species. 



149. Carex rariflora, Smith. 



Collected by Mr. Palmer on St. Paul Island. 



150. Hierochloa borealis, It. and S. 

 Not rare on either island. 



151. Hierochloa pauciflora, E. Br. 

 Bare on St. Paul Island. 



152. Alopecurus alpimis, Smith. 



Common on both islands. 



153. Alopecurus howellii, Vasey, var. merriami, Beal. 



On bare ground that has been used as hauling grounds by seals. Grows in dense 

 clumps; decumbent in habit. Not seen elsewhere than on dry, bare ground. 



