322 MISC. PUBLICATION 797, U. S. DEPT. OF AGRICULTURE 
his Dream Island days ... p. 142-144. 21.5 cm. London, 1948; List of 
flora recorded at Skokholm 1927-46. Jn his Letters from Skokholm. (Ap- 
pendix III.) p. 232-236. 21.5 cm. London, 1947. (Mostly unannotated 
lists.) 
An ecological account of the vegetation of Grassholm Island, 
Pembrokeshire. Jour. Ecology 41: 84-99. 3 fig.,map. 1953. 
Includes (p. 85) list of 20 angiosperms; also list of algae and lichens. 
Hepper, F. N. Flora of Caldey Island, Pembrokeshire. Proc. Bot. Soe. 
Brit. Isles 1: 21-86. 1 fig. (map). 1954. 
Geology, topography, etc.; annotated list of vascular plants and Characeae 
(848 species, all but 1 vascular); bibliography. 
Sladen, W. J. L. The flora of Skomer. Jn Buxton, John, and Lockley, 
R. M. Island of Skomer. A preliminary survey of the natural history of 
Skomer Island, Pembrokeshire, undertaken by the West Wales Field Society 
Appendix 2. p. 135-141. 22 cm. London, New York, 1950. 
Annotated list of vascular plants; also list of lichens, the last determined 
by A. E. Webb. 
Walton, C. L. A contribution to the flora of the St. David’s peninsula. 
28 p. 21cm. Haverfordwest, 1951 (cover place and date). 
General features of flora, bibliography, etc.; partly annotated list of 
known vascular plants and Characeae. Published by the West Wales Field 
Society. 
RADNORSHIRE 
Vice-county 43. 
General 
Carter, P. W. The history of botanical exploration in Radnorshire. Trans, 
Radnorsh. Soc. 20: 42-58. 1950. 
Not seen; cited from Biol. Abst. 31: 329. 1957. 
Local 
Ley, Augustin. Radnorshire. Jn Tabular catalogues of common plants 
for Breconshire, Radnorshire, Selkirkshire, and West Lancashire. Rpt. Bot. 
Rec. Club 1874: 80-86. 1875. (Kew library.) 
Tabular list of vascular plants from the four counties mentioned, with 
indication of occurrence in each; includes 303 species from Radnorshire.— 
See also Ridley, H. N. Notes on Radnorshire plants. Jour. Bot. 19: 170- 
174. 1881. (Geology, ete.; list of noteworthy vascular plants, with locali- 
ties.)—Also Ley, A. A list of species observed in Radnor in 1881... Rpt. 
Bot. Rec. Club 1881/82: 246-247. 1883. (List of vascular plants, with 
localities. In Gray Herbarium library.)—Also his A list of species observed 
. .. in Radnorshire (Co. 48) in 1886... l.c. 1884/86: 144-146. 1887. (List 
with localities. In Gray Herbarium library.)—Also Rogers, W. M. Rad- 
norshire and Breconshire plants. Jour. Bot. 37: 17-25. 1899. (Extensive 
list of vascular plants.)—-Also his Radnorshire and Breconshire Rubi. l.c. 
37: 193-198. 1899. (Extensive list.)—Also Wade, A. E., and Webb, J. A. 
Radnorshire plant records. North West. Nat. 20: 156-160. 1946. (Exten- 
sive list, with localities and indication of those new to the county.) 
Notes on the flora of Aberedw. Trans. Woolhope Nat. Field Club 
1890/92: 184-198. 1894[?]. (British Museum (Natural History) library.) 
Annotated list of vascular plants and mosses (478 species, of which 358 
are vascular) observed by author, mostly in 1886—1890.—See also his First 
contribution towards a flora of Aberedw, Radnorshire. Woolhope Nat. Field 
Club 1890/92: 180-183. 1894[?]. (Topography, general features of flora. 
In British Museum (Natural History) library.) 
IcELAND ({sLAND) 
See also Denmark, General (Hornemann, Forsgg til en dansk oeconomisk plantelere) ; 
Scandinavia. 
Iceland is now officially divided into 16 districts (sysla, pl. syslur). As these are not shown 
on most maps, the location of the areas covered by local floras has been indicated in the 
annotations by the terms northeast, north-central, ete. To provide a definite method of 
indicating position on the map, the parallel of 65° has been taken arbitrarily as dividing 
north from south Iceland, and the meridians of 16° and 20° as separating east, central, and 
