The Botany of Iceland - 01.12.1928, Side 22
346
•IOHS. BOYE TETERSEN
407. On same rock but in holes in the stone 21/s.
(Phormidium autumnale, Hantzschia amphioxys v. xerophila, Navi-
cula mutica f. Cohnii).
408. Rocks below bird cliíf; surface facing somewhat downward;
Heimaey 21/s.
(Desmococcus vulgaris, Prasiola crispa, Phormidium autumnale, P. sub-
fuscum, Achnanthes coarctata, A. lanccolata, Hantzschia amphioxys v. ge-
nuina, H. a v. xerophila, Navicula cincta v. Heufleri, N. contenta, N. mutica
f. Cohnii, N. m. f. minima, N. perpusilla, N. pusilla, Pinnularia intermedia,
P. parva v. Lagerstedtii f. interrupta).
409. Rock below bird cliff, surface upwards 21/s.
(Prasiola crispa, Phormidium autumnale, Merismopedia sp., Achnan-
thes coarctata, Hantzschia amphioxys v. genuina, H. a. v. xerophila, Navi-
cula Atomus, N. contenta, N. cincta v. Heufleri, N. mutica f. Cohnii, N. m.
f. minima, N. m. f. producta, N. pusilla, Pinnularia intermedia, P. parva
v. Lagerstedtii f. interrupta).
410. Rock below bird cliff; surface slightly downwards; Heimaey 21/s.
(Rhizoclonium lapponicum, Vaucheria synandra, Caloneis fasciata,
Navicula cincta, N. gregaria, N. pusilla, Nitzschia debilis, N. Sigma v.
Clausii, N. vitrea v. salinarum, Pinnularia parva v. Lagerstedtii f. interrupta).