THE PLANTS OP THE PBIBILOF ISLANDS* ' 5-75 



171. Iilymus mollis, Trin. 



Very common on both, islands. 



172. Elymua villosissimus, Scribn. 



Culms stout, 3 dm. high, from creeping root-stocks; leaves of sterile shoots narro?r, 

 as long as the culm; leaves of the culm comparatively short (6 to 13 cm.) and broad 

 (6 to 10 mm.). Spikes ovate-oblong, 5 to 6 cm. long. Spikelets densely villous, 15 to 

 20 mm. long, 2 to 3 flowered. Empty glumes narrowly lanceolate, acuminate, 3-nerved, 

 about as long as the florets, densely silky villous on the back. Third glume, 12 to 15 

 mm. high, 9-uerved, ovate-lanceolate, acute. Palea about as long as the glume, 

 2-toothed, hairy on the sides and back, ciliate on the keels, rachilla densely pubescent. 



Common in depressions on grassy uplands. Growing -with Valeriana oapitata, 

 Viola lan^sdorfii, Bubus stellatus, and such plants. 



173. Equisetum arvense, L. 

 Common on both islands. 



174. Equisetum scirpoides, Michx. 

 Common on both islands. 



175. Equisetum variegatum, Schleich. 



Abundant at the north end of St. Paul Island. 



176. Botryohium lunaria, Swartz. 



Eare among sand dunes on St. Paul Island. 



177. Phegopteris polypodioides, F6e. 



Collected on St. George Island by Messrs. True and Prentiss, and on St. Paul by 

 Mr. Palmer. 



178. Asplenium filiz-foemina, Bernb. 



Not rare in the interior of St. Paul Island. 



179. Aspidiumspinulosum,- Swartz, var. dllatatum, Hook. 

 Common on both islands. 



180. Aspidium filiz-mas, Swartz. 

 Eare on St. George Island. 



181. Cystopteris fragilis, Bemh. 

 Common on both islainds. 



Two ferns, Polypodium vulgare, L., and Aspidium loricMtis, Swartz, supposed to 

 have been collected on the Pribilof Islands by Mr. C. H. Townsend, are included in 

 Dr. Merriam's list, but as the specimens are not in the United States National Her- 

 barium and no one else has collected these species on the Pribilof Islands, they have 

 been excluded from this list. They are both common at Unalaska. 



182. Iiycopodium selago, L. 

 Common on both islands. 



183. Iiycopodium alpiuum, L. 



Eocky uplands on St. Paul Island. 



184. Lycopodium annotinum, L., var. pungens, Spreng. 

 Barren uplands on St. Paul Island. 



