The Botany of Iceland - 01.12.1928, Qupperneq 20

344
JOHS. BOYE PETERSEN
South lceland.
352. At base of the wall of the »Sæluhús« at Mosfellsheiði 14/s.
(Bumilleria exilis, Hormidium flaccidum, Oocystis rupestris, Prasiola
crispa, Hantzschia amphioxys v.xerophila, Navicula Atomus, N. contenta,
N. nitrophila, Nitzschiacommunis v.abbreviata, Pinnularia borealis, P.molaris).
353. On dolerite stones in fence; Kárastaðir 15/s.
(Prasiola furfuracea, Hantzschia amphioxys v. xerophila, Navicula
nitrophila, Pinnularia borealis, P. gracillima, P. parva v. minuta).
354. On earth among stones in fence; Kárastaðir 15/s.
(Phormidium autumnale).
355. Rocks in Almannagjá; a place where water frequently trickles
down 15/8.
(Stigonema minutum, S. panniforme).
358. On ground of path close to spring near Þingvellir parsonage 15/s.
(Phormidium autumnale).
364. Soil from small boiling spring at Laugarvatn 16/8.
(Schizothrix Friesii, Achnanthes lanceolata, Caloneis fasciata, Pinnu-
laria molaris, P. interrupta f. minor).
371. Among stones and gravel on shore of Laugarvatn; dry at the
time of observation, but in windy weather the waves will be able to
flood the spot 16/s.
(Vaucheria hamata, Achnanthes coarctata, Amphora ovalis v. Pediculus,
Cocconeis placentula, Caloneis obtusa, C. Silicula v. genuina, Cymbella
lanceolata, C. parva, C. æqualis, C. helvetica, Cymatopleura Solea, Diplo-
neis ovalis v. oblongella, Epithemia turgida, E. Sorex, E. Zebra, Eunotia
lunaris, Fragilaria construens, F. mutabilis, Frustulia vulgaris, Gompho-
nema acuminatum, Melosira varians, Meridion circulare, Navicula cryp-
tocephala, N. radiosa, Pinnularia major, P. viridis, Rhopalodia gibba,
R. ventricosa, Stauroneis anceps, Surirella biseriata, S. robusta, Synedra
Ulna v. danica (Diatoms det. E. 0strup)).
372. On soil rich in manure outside the house («Hlað«) Laugarvatn16/s.
(Phormidium autumnale, Prasiola crispa, Achnanthes lanceolata,
Diatomella Balfouriana, Hantzschia amphioxys v. xerophila, Melosira
crenulata, Navicula Atomus?, N. nitrophila, Pinnularia borealis, P. gracil-
lima, P. mesolepta, Rhopalodia gibberula).
373. On soil from bridle path near Apavatn 16/s.
(Pinnularia borealis, Navicula Atomus)
380. Squeezed out of Sphagnum on mýri near Apavatn 16/s.
(Ceratoneis Arcus, Cocconeis placentula, Diatoma hiemalis, D. vul-
garis, Epithemia Zebra, Eunotia prærupta, Melosira distans, M. italica
v. tenuissima, M. varia, Meridion circulare, Rhopalodia gibba, Synedra
Ulna v. typica (det. E. Ostrup)).
381. On turf fence at Neðri-Apavatn 16/s.
(Prasiola crispa, Hantzschia amphioxys v. xerophila, Navicula Atomus,
N. mutica f.Cohnii, N. m. f. minima, N. nitrophila, Nitzschia Kútzingiana,
Pinnularia borealis, P. intermedia).