The Botany of Iceland - 01.12.1928, Qupperneq 21

THE AERIAL ALGÆ OF ICELAND
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386. On ground in the bed of Gljúfurholtsá 17/s.
(Vaucheria hamata, Achnanlhes microcephala, Caloneis Vaucheriæ,
Ceratoneis Arcus, Diatomella Balfouriana, Fragilaria capucina, Gompho-
nema angustatum v. obtusatum, G. parvulum v. subellipticum, Navicula
cryptocephala v. angusta, N. c. v. exilis, Nitzschia Clausii, N. communis,
N. Kútzingiana, N. Palea v. perminuta).
387. On ground near the fence surrounding the church; Kotströnd 17/s.
(Botrydiopsis arhiza, Botrydium granulatum, Hormidium flaccidum,
Prasiola crispa, Gomphonema parvulum, Hantzschia amphioxys v. xero-
phila, Navicula Atomus, Nitzschia Kútzingiana, Pinnularia borealis).
395. At the base of wall, Reykjal'os factory ls/s.
(Chlorella ellipsoidea, Stichococcus bacillaris, Achnanthes lanceolata,
Hantzschia amphioxys, Navicula Atomus),
Vestmannaeyjar.
399. Small rocky cave on Heimaey near the landing place on the
north side; abt. 20 m above sea level 21/s.
(Rhizoclonium lapponicum, Vaucheria synandra, Achnanthes coarc-
tata, A. delicatula, A. subsalsa, Caloneis fasciata, Hantzschia amphioyxs,
Navicula peregrina v. Meniscus, N. radiosa v. tenella, Nitzschia debilis,
Pinnularia intermedia).
400. On the back of þig stone outside rocky cave; abt. 20 m above
sea level; Heimaey 21/s.
(Desmococcus vulgaris, Trochiscia hirta, Achnanthes coarctata, Navi-
cula cincta v. Heufleri, N.contenta, N. mutica f. Cohnii, N. m. f. minima,
N. perpusilla, Pinnularia intermedia).
401. Rocky wall of cave; abt. 20 m above sea level; Heimaey 21/s.
(Nostoc sp., Achnanthes coarctata, Hantzschia amphioxys v. genuina,
Navicula cincta v. Heutleri, N. cincta v. typica, N. contenta, N. peregrina
v. Meniscus, N. perpusilla, Nitzschia Kútzingiana, N. vitrea v. salinarum,
Pinnularia intermedia, P. parva v. Lagerstedtii f. interrupta).
402. Cave; on calcareous sand formed of fragments of Mollusc
shells, Bryozoa etc.; Heimaey 21/s.
(Vaucheria sp. sterile).
403. Cave on Heimaey 21/s.
(Achnanthes coarctata, A. lanceolata, Navicula cincta, N. c. v. Heufleri,
N. contenta, N. mutica f. Cohnii, N. pusilla, Nitzschia vitrea v. salinarum,
Pinnularia intermedia).
404. On wood work at northern landing place; Heimaey 21/'s.
(Pseudendoclonium submarinum).
405. On stone reached by the salt water in stormy weather; Heim-
aej^ 21/8.
(Pseudendoclonium submarinum, Prasiola sp.).
406. On rocks below bird cliifs at height of abt. 50 m on rock
west of depression by landing place 21/s.
(Prasiola furfuracea).