The Botany of Iceland - 01.12.1928, Side 14

338
JOHS. BOYE PETERSEN
172—173. Úlfsbær; on soil saturated with urine near the house 15/t.
(Prasiola crispa, Phorinidium autumnale, Gomphonema angustatum
v. productum, Hantzschia amphioxys v. xerophila, Navicula Atomus,
N. mutica f. Cohnii, N. nitrophila, Nitzschia amphibia, Pinnularia borealis.
P. subcapitata).
179. On the ground in a lava cave by the bridge across Skjál-
vandifljót; sheep shelter in the cave 15/t.
(Bumilleria exilis, Bumilleriopsis iirevis, Hormidium flaccidum, Ach-
nanthes lanceolata, Diatomella Balfouriana, Fragilaria lævissima. Melosira
Boeseana, Navicula Atomus, N. contenta, N. mutica f. Cohnii, N. m. f. minima,
Pinnularia gracillima, P. intermedia, Rhopalodia gihba).
182. On turf fence; Skútustaðir 16/t.
(Hantzschia amphioxys v. genuina, H. a. v. xerophila, Navicula Atomus,
N. Borrichii v. undulata, N. mutica f. Wulffli, Pinnularia boreatis, P. in-
terinedia).
184. Small lava cave near Skútustaðir 16/t.
(Mossprotonema, Diatomella Balfouriana, Melosira Roeseana, Navicula
mulica f. Cohnii, N. m. f. minima, N. m. f. rhomboidea, Pinnularia borealis,
P. intermedia, Rhopalodia ventricosa).
185. On the edge of a small volcanic crater east of Skútustaðir 16/7.
(Prasiola crispa, Diatomella Balfouriana, Hantzschia amphioxys v.
xerophila, Pinnularia borealis).
196. Skútustaðir; on earth between stones in the wall of the
house 17/7.
(Prasiola crispa, Merismopedia minima Beck, Hantzschia amphioxys
v. xerophila, Navicula mutica f. Cohnii, N. m. f. minima, Pinnularia borealis).
197. Skútustaðir; between stones in the wall at an altitude of abt.
1 m. 17/7.
(Prasiola crispa, Diatomeæ, the most of which were only dead
frustules).
209. Soil under Archangelica, strongly manured by the droppings
of birds; Geitey in Mývatn 19/t.
(Phormidium autumnale).
212. Damp ground on Geitej’ in Mývatn; abundantly manured with
the droppings of birds 19/t.
(Phormidium autumnale).
215. On mud in „Stóra Gjá” 19/t.
(Oscillatoria tenuis, Achnanthes lanceolata, Caloneis fasciata, Diploneis
ovalis v. oblongella, Melosira varians, Navicula bidentula, N. contenta,
N. cryptocephala v. veneta, Nitzschia amphibia, N. Kútzingiana, Pinnularia
gracillima, P. interrupta f. minor, P. mesolepta v. stauroneiformis, P. major,
P. molaris, Stauroneis anceps).
216. On stones in „Stóra Gjá” 19/7.
(Prasiola crispa, Pleurococcus vulgaris, Trochiscia hirta).