BOTANY. 27 



ticulatum, Linn. — H. obtusum, Whlb. — On shaded ground, with Webera 

 cruda. 



22. Hypnum gracillimum, Hrsch. Fl. Bras, i, p. 78. — Pound deep in 

 the interior of a small dark cavern in a rock ; 300-400 feet altitude ; 

 caves had been tenanted by birds. 



23. Hypnum uncinatum, Hedw. Muse. Fr. iv, p. 65, t. 25. — Abun- 

 dant on hill-sides, among and on the sides of azorella mounds. 



24. Hypnum fluviatile, Sw. Muse. Suec. p. 63. — On wet and damp 

 rocks in rear of transit-house, and other localities. 



25. Hypnvm prigidum, C. Mull, in Bot. Zeit. 1856. — Growing with 

 Bryum Warneum. 



26. Hypnum Lechleri, C. MilU. 1. c. 456, 1856. — On low ground. 



27. Hypnum fluitans, Linn. Fl. Suec. p. 1074. — In fresh water and 

 among bogs. 



28. Hypnum riparium, Linn. Sp. PI. p. 1596. — Growing with Ranun- 

 cuhis crassipes in wet places. 



C— LICHENES.* 



Determined by Pkof. Edw. Tuckerman. 



The Lichens of this island were first observed by Dr. J. D. Hooker 

 during the voyage of the Erebus and Terror (1839-1843), and his speci- 

 mens were studied by Dr. Thomas Taylor, according to whose reckoning 

 (Lich. Antarct. in Lond. Jouru. Bot. 3, p. 634) the whole number of 

 species was sixteen. Dr. Taylor's herbarium is now included in that of 

 the Boston Society of Natural History, but contains unfortunately very 

 little to illustrate his Kerguelen determinations; and the lack of micro- 

 scopical analysis makes it difficult, therefore,' to avail ourselves of his 

 work. - 



The collection now before me, made by Dr. Kidder, naturalist of the 

 United States Transit Expedition of the present year, contains more or 

 less satisfactory evidence of as many as twenty species, though not all 

 of them determinable. Adding the three found in the Taylor herbarium, 

 the whole number, according to this reckoning, will be twenty-three. 

 And as eight or nine others are found in Taylor's list, there is no doubt 

 that this little Lichen-Flora is larger than it was taken to be. 



1. UsNEA SULPHUREA, Miill. Th. Fr. — TJ. melaxantha, Ach. — Eocks. — 

 According to Taylor, the place of this well-known antarctic lichen is 

 taken in Kerguelen's Land by another, the U. Taylori, J. D. Hook., 



* Extracted from the Bulletin of the Torrey Botanical Club, October, 1*^75, pp. 57-59. 



