The Botany of Iceland - 01.12.1928, Side 9

THE AERIAL ALGÆ OF ICELAND
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N. p. v. Flotowii, Nitzschia sinuata, Pinnularia gracillima, P. lata, P. viridis
v. commutata, Rhopalodia gibba).
85. Same rocky wall, a drier spot, in a crack.
(Chroococcus turgidus, Gloeocapsa alpina, G. rupestris, Gloeothece
rupestris, Scytonema Myochrous, Stigonema informe, Caloneis fasciata,
C. Silicula v. gihberula, Cymbella æqualis, Diatomella Ralfouriana, Di-
ploneis ovalis v. oblongella, Eunotia prærupta f. curta, Fragilaria muta-
bilis, Gomphonema parvulum, Melosira Roeseana, Meridion circulare,
Navicula contenta, N. perpusilla, N. p. v. Flotowii, Nitzschia amphibia,
N. Denlicula, N. perpusilla, N. sinuata, Pinnularia borealis, P. Brebissonii,
P. gracillima, Rhopalodia parallela v. minor, R. ventricosa, Stauroneis
parvula v. producta).
86. Same rocky wall in a place with an outflow of water.
(Tribonema bombycinum, Vaucheria borealis, Achnanthes coarctata,
A. lanceolata, Cymbella lanceolata, C. aspera, C. parva, Diatoma hiemalis,
Diatomella Balfouriana, Diploneis ovalis v. oblongella, Epithemia Zebra,
Eunotia lunaris, Fragilaria mutabilis, Gomphonema parvulum, G. sub-
clavatum, Hantzschia amphioxys, Melosira Roeseana, Meridion circulare,
Navicula perpusilla, Nitzschia amphibia, Pinnularia borealis, Rhopalodia
ventricosa, Synedra Ulna, Tabellaria ílocculosa (partim det. E. 0strup)).
87. Same rockj^ wall, stones with an almost black coating; damp.
(Scytonema Myochrous).
88. Rocky wall in Fljótsdalur, with plenty of water streaming
down it. 30/6.
(Cosmarium sp., Hormidium flaccidum, Tribonema bombycinum,
Achnanthes coarctata, A. lanceolata, Ceratoneis arcus, Cj'mbella naviculi-
formis, C. lanceolata, Diatoma hiemalis, Diatomella Balfouriana, Diploneis
elliptica, Epithemia Zebra, E. Argus, Eunotia prærupta f. curta, E. ro-
busta v. Diadema, Gomphonema subclavatum, Hantzschia amphioxys,
Meridion circulare, Navicula perpusilla, N. radiosa, Nitzschia Denticula,
Pinnularia divergens, P. viridis, P. borealis, Rhopalodia ventricosa, Sgnedra
Ulna, Tabellaria flocculosa, T. fenestrata. (partim det. E. 0strup)).
89. Same rocky wall; black, thin layers, only scraped off the stone
with difficulty.
(Calothrix parietina, Gloeocapsa alpina, Nostoc sp., Schizothrix Heuf-
leri, Scytonema crustaceum).
90. Same rocky wall, a place with plenty of water streaming down.
(Calothrix parietina, Gloeocapsa alpina, G. rupestris, Plectonema
roseolum, Rivularia sp., Scytonema mirabile, S. Myochrous, Stigonema
mamillosum, Diatomeæ, Desmidiaceæ, Zygnema sp.).
91. Same rocky wall, a place with plenty of water streaming down.
(Hormidium flaccidum, Tribonema bombycinum, Amphora ovalis,
Cocconeis Placentula. Cyclotella antic|ua, Cymhella parva, C. Cistula,
C. ventricosa, C. lanceolata, C. cuspidata, C. cymbiformis, C. Ehrenbergii,
C. amphicephala, C. helvetica, Diploneis elliptica, D. ovalis v. oblon-
gella, Epithemia Zebra, E. Z. v. proboscidea, E. sorex v. amphicephala,