. Botany of the Faeröes, based upon Danish investigations. Botany -- Faroe islands. 404 sporangium, while others bear botb terminal and lateral. The sporangia are about 18 fi thick and 50 (i long. This species belongs to the sublittoral zone and is a fairly common epiphyte on several larger algæ. It has been found in the open sea as well as in sheltered localities and bears both plurilocular and unilocular sporangia. The plurilocular sporangia occurred in May, June, July, November and December, the unilocular in April, May and November. F. typica has been found in the following piaces: —Vid.:


. Botany of the Faeröes, based upon Danish investigations. Botany -- Faroe islands. 404 sporangium, while others bear botb terminal and lateral. The sporangia are about 18 fi thick and 50 (i long. This species belongs to the sublittoral zone and is a fairly common epiphyte on several larger algæ. It has been found in the open sea as well as in sheltered localities and bears both plurilocular and unilocular sporangia. The plurilocular sporangia occurred in May, June, July, November and December, the unilocular in April, May and November. F. typica has been found in the following piaces: —Vid.: Ostvig ^); Ost.: Glibre (!); Str.: Thorshavn (H. J., !), Gliversnæs (!); San do: Trold- hoved (!); Syd.: Trangisvaag (Ostenfeld), Frodebo (!), Vaags Ejde (!), Vaagsfjord (H. J.). F. pygmæa: — Kun6 (H. J.); Syd.: Vaags Ejde (!). 85. E. siliculosus (Dilhv.) Lyngb., Hydro- phyt., p. 131, tab. 43 C; Kuckuck, Beitråge zur Kenntnis einiger Ectocarpus-Arten der Kieler Fohrde, p. 15. f. typica Kuckuck, 1. c. f. arcta (Kutz.) Kuckuck, 1. c. f. varians Kuckuck, Ectocarpus siliculosus Dilhv. sp. forina varians, ein Beispil fur ausser- ordentliche Schwankungen der pluriloculåren Sporangienform (Berichte deutsch. bot. Gesellsch., Band X, 1892, p. 256, taf. XIII). Ectocarpus siliculosus is a very variable species, and its outward appearance dillers considerably, hence it is often difficult to dis- tinguish from the nearest allied Ectocarpus- species. The specimens referred to f. typica usually agree fairly well with Kuckuck's figs. 1—2, 1. c, though as a rule it is comparatively rare for their sporangia to terminate simply in a long, colourless hair, they being most commonly only drawn out into a longer point. The main filaments vary from 40 // to 70 // in thickness. The specimens referred to f. arcta are particularly eharacterized by their shorter sporangia, and in this they resemble Ectocarpus confervoides from whicb they differ, however, amongst other things. Fig. 66. Ecto


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