(96 



6. — A List of the Phanerogams and Ferns collected by Mr. P. C. 

 Keytel on the Island of Tristan da Cunha, 1908-1909. — By 

 E. P. Phillips, M.A., F.L.S. 



Mr. Keytel during his stay of nearly a year on the Island of 

 Tristan da Cunha collected 57 species of plants, of these 43 were 

 phanerogams, comprising 21 orders and 34 genera, whih 11 genera 

 with 14 species were pteridophytes. 



An enumeration of the plants from Tristan da Cunha (made from 

 Thouars', Carmichael's, and Mosely's collections) shows 38 phanero- 

 gams and 27 ferns, out of which 14 of the former and 6 of the latter 

 are endemic. Common cosmopolitan weeds were not numerous, 

 only 11 being mentioned. 1 " 



Mr. Keytel's collection contained 20 species which had been found 

 by the above three collectors, the remainder being plants hitherto 

 unrecorded from the island, though doubtless the majority have 

 been introduced during the last 30 years. Of the endemic species, 

 Mr. Keytel only found 7 ; 3 out of 6 dicotyledons, 1 out of 8 

 monocotyledons, and 3 out of 6 pteridophytes. 



The geographical distribution of many of the species has been 

 taken from Hemsley's account in the Report of the "Challenger" 

 expedition, and also from Dr. Brown's account in the Eeport of the 

 " Scotia" expedition. I My thanks are due to Dr. 0. Stapf, F.R.S., 

 who kindly checked my namings of the ferns and grasses. 



PHANEROGAMS. 



DICOTYLEDONS. 



N. O. Caryophyllaceae. 



Cerastium trivale, Link. 



Distribution. — Europe, Asia, North Africa. 



* '• Report of the Scientific Results of the Exploring Voyage of H. M.S. Challenger, 

 1873-1876," Botany, vol. i., p. 143, 1885. 



t "Report on the Scientific Results of the Voyage of S.Y. Scotia during the years 

 1902, 1903, and 1904," Botany, vol. iii., 1912. 



