Dr Lauder Lindsay on the Flora of Iceland. © 73 
volumes of the “ British Seaweeds Nature-printed” (1860), 
writes me:—“I had much more difficulty in tracing the 
synonymy of some of the species than I expected, owing 
to the want of the authorities. Some of the species I have 
not been able to find at all. These are possibly not British” 
(e.g., Fucus albus, FP. clavatus, and Conferva egagropila ; 
which latter may be C. egagropila, Linn., E. B. t. 377). 
“Even some of those I have settled are uncertain.” Thus 
Fucus crispus may be Callophyllis laciniata, Huds. Kiitz. 
Phyc. Gen., p. 401; Brit. Seaweeds Nature-printed, p. 51. 
The latter occurs on the coasts of Norway and Farée, and 
therefore is likely also to be found on those of Iceland. 
“Ulva plicata may be Rivularia plicata; but I have not 
been able to trace its identity, and perhaps could not, even 
with a work on general algology—so unsatisfactory are names 
without authorities.” Mr Berkeley tells me Byssus Lolithus 
is an alga— Chroolepis Iolithus, Agardh, probably only a 
form of Chroolepis aureus.” And lastly, the Conferva dis- 
siliens of Vahl’s list may be Vesiculifera dissiliens, Hassall, 
or Galeoprium dissiliens, Berkeley. The Zonaria deusta 
may be Hildenbrandtia rosea, Kiitz.; and the Spherococcus 
-ciliatus may be Rhodophyllis veprecula, J. Agardh. 
A. Mosses and Hepatice.—Dicranum flecuosum of Vahl’s 
list may or may not be D. flewuosum, Hedw.; and the latter 
may be Dicranodontium longirostre, Br. and Sch., or Campy- 
lopus torfaceus, Br.and Sch. Bryum pyriforme may be either 
Leptobryum pyriforme, Hook. and Wilson, or Physcomitrium 
pyriforme, Br. and Sch. JB. ventricosum may be either B. 
Wahlenbergii, Schwegr. or B. bimum, Schreb. 
5. Phanerogams.—Professor Balfour informs me that Salia 
ovata may be S. ovata, Host., or S. ovata of Seringe, “ which 
is a synonym of S. Waldsteiniana of Willd. or S. alpestris, 
Host., and perhaps a variety of S. myrsinites, L., and S. 
prunifolia, Sm.” Carex atro-fusca may be “ C. atro-fusca, 
Steven, found in the Caucasus, which 1s the C. nigra of 
Allioni,” or ‘“ C. atro-fusca of Schkr., which is C. ustulata;” or 
“ C. atro-fusca of Sieber, which is C. fuliginosa of Sternberg 
and Hoppe, found in Carinthia.” ‘‘ Sawifraga punctata is 
mentioned as a species by Hooker ; but it seems to be a variety. 
NEW SERIES.—VOL. XIV. NO. I1.—suLy 1861. K 
