Orthopyxis crenata
General description:
The variation in the number and depth of the pedicular annulations may be related to the age of the stems, the younger and newer regenerated pedicels being more deeply annulated than the older ones.
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Taxon
Orthopyxis crenata (Hartlaub, 1901)
Orthopyxis crenata
General description:Hydrorhiza tubular, flanged. Pedicels arising at intervals from the hydrorhiza, simple, erect, smooth to strongly annulated, distal spherule smaller in diameter than the supporting shoulder of the pedicel.
Hydrotheca campanulate, circular in section, widening to margin, length:width ratio approximately 1:1.2. Margin with 10 - 12 teeth, cusps rounded, the incisions between almost the same shape as the tooth.
Hydranth with 16 - 20 tentacles.
Distribution:Western Australia, New Zealand, South Africa and Spain.
Habitat:Subtidal, epiphytic on algae.