120 PROCEEDINGS OP THE AMERICAN ACADEMY 



is white, very knotty and liable to crack, when dry impervious to 

 nails, and decaying rapidly if exposed to wet. Fruit is abundant. 



— . Brahea edulis, Wendland ; new species. (See page 146.) 

 Frequent in deep warm ravines, from the northern end to Jack's Bay ; 

 the only thing on the island having a tropical look. It attains a height 

 of about forty feet, averaging fifteen inches in diameter. Each ti'ee 

 bears one to four clusters of fruit, four feet in length, and each weigh- 

 ing forty or fifty pounds. The fruit is eaten by man, goats, birds, and 

 mice. In flower near the end of March. 



93. JuNCUS BUFONius, Linn. From the middle to the nortli end 

 of the island, growing abundantly in very springy places and a sure 

 indication of water ; not much eaten by goats. 



94 and 94 a. Avena fatua, Linn., and var. Several small patches 

 were found in open places and on the best soil. 



95. MuiiLENBERGiA DEBiLis, Trin. Identical with Arizona speci- 

 mens so referred. Growing in abundance on warm slopes in the 

 middle of the island, more rare at the south end ; not much eaten by 

 goats till dried in summer. 



96. Stenochloe Californica, Nutt. in PL Gambel. 189, fide 

 Professor Thurber. On warm rocky slopes in the middle of the 

 island ; not very abundant ; very succulent, and the goats are very 

 fond of it. Known previously only from Nuttall's specimens. 



97. Festuca microstachy's, Nutt. In bunches on warm slopes 

 and in open places in the middle of the island. 



98. Melica imperfecta, Trin. In tufts in the crevices of high 

 rocks in the middle of the island. 



99. Bromus sterius, Linn. On warm hillsides, sometimes in 

 large patches as if sown, at the south end and middle. 



100. Pell^a ornithopus, Hook., fide Professor Eaton. Rare, 

 in the crevices of the highest cliflTs. 



101. Gymnogramme triangularis, Kaulf. In similar places in 

 the middle and at the south end of the island. 



102. AspiDiUM MUNiTUM, Kaulf. In large bunches ; only two seen 

 at the northern end in a rooky place inaccessible to goats, and con- 

 stantly damp from the prevalent fogs. 



103. PoLYPODiUM Californicum, Kaulf., fide Professor Eaton. 

 Abundant at the north end in the cracks of rocks, in damp localities, 

 sometimes covering large surfaces. 



104. PoLYPODiUM ScouLERi, Hook. Encircling the trunk of a 

 single oak, in a thick mat of moss and constantly wet by the fogs, 



