Eudendrium cf. capillare Alder, 1856

Picture: Fig. 1

Picture: Fig. 2

Picture: Fig. 3

SYNONYMY

Eudendrium hyalinum Bonnevie, 1898

Eudendrium tenue A. Agassiz, 1865

Eudendrium parvum Warren, 1908

DESCRIPTION

Colonies small, monosiphonic, with rather smooth perisarc (Fig.1). Hydranths with about 20 tentacles and large hypostome (Fig.2). Nematocysts on tentacles arranged in rings in proximal 3 of tentacles. Male blastostyle without tentacles, from 12 gonophores per blastostyle, female gonophores on hydranths with reduced tentacles, and with no hypostome, 5-12 eggs per blastostyle (Fig.3). Small microbasic euryteles and isorhizas, not concentrated in the basal ring.

DISTRIBUTION IN SVALBARD

Hornsund, Tommeloyane, Wahlenbergfjorden

WORLD DISTRIBUTION

near cosmopolitan, Greenland, Mediterranean, Bermudas, southern Africa, Japan, North Sea

DEPTH

8-30

SUBSTRATE

algae, Balanus sp., rock

REPRODUCTION

fixed gonophores

present