The Botany of Iceland - 01.12.1916, Síða 27

MARINE DIATOMS FROM THE COASTS OF ICELAND
371
Synedra provincialis Grun. Trans. Mic. Soc. XVIII, 166; V.H.Syn.,
Tab. XL., fig. 8.
Reykjavik (S.W.), Grld.
Area: Eur.
The species found by me is a forma minor (Iong. 54 ju). The length
of the typical Syn. provinc. is given by Grunow as: 65—llO/c
Synedra pulchella Ktz. V. H. Trt., 309, Tab. X, lig. 402.
15 samples (S. 3, S.W. 2, N.W. 5, N. 4, E. 1).
Area: Eur., As., Am., Grl., A. S.
Thalassionema Grun. V. H. Trt., 319.
Thalassionema nitzschioides Grun. Per. D. mar., 320, Tab. LXXXI,
figs. 17—18.
Eyrarbakki (S.), H. Js.
Area: Eur., Am.
Thalassiothrix Cl. & Grun. 1880. V. H. Trt., 321.
Thalassiothrix Frauenfeldi Grun. Per. D. mar., 321, Tab. LXXXI,
fig. 15.
Prestbakki (N.), H. Js.
Area: Eur., As., Grl.
Fragilaria Lyngbye 1819. V. H. Trt., 323.
Fragilaria hyalina (Ktz.) Grun. V. H. Trt., 324, Tab. XI, fig. 443.
5 samples (S.W. 2, E. 3).
Area: Eur., Afr., As.
Fragilaria striatula Lyngb. V.H.Trt., 324; Per.D.mar., Tab.LXXXI,
fig- 5.
82 samples (S. 12, S.W, 30, N,W. 5, N. 13, E. 20, S. L. 2).
Area: Eur., Am., Aust., Grl., A. S.
Fragilaria vitrea Ktz. Per. D. mar., 326, Tab. LXXXI, lig. 2.
28 samples (S. 3, S.W. 6, N.W. 5, N. 11, E. 3).
Area: Eur., Am.
Var. minirna Per. D. mar. 1. c., fig. 3, I have found interspersed among
the main-species.
Rhaphoneis Ehr. 1844. V. H. Trt., 329.
Rhaphoneis amphiceros Ehr. var. rhombica Grun. V. H. Trt., 330,
Tab. X, fig. 395.
Búðir (S.W.), H. Js.
Area: Ubiquist.