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Taxon
Hebella costata Bale, 1884
Nomenclature
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Family: HebellidaeGenus: Hebella
SUMMARY
Hydrorhiza tubular, creeping on stems and branches of host. Hydrothecal pedicel short, tubular, perisarc smooth, widening a little distally and merging into base of hydrotheca.
Hydrotheca long, tubular, perisarc thick, inclined to one side in distal third so that one wall convex and other concave, body with 8 - 11 deep entire annulations these becoming indistinct proximally, in some hydrothecae annulations reduced to undulations. Margin circular, with up to four replications, inclined to hydrothecal axis, rim distinctly everted, perisarc fairly thin. Diaphragm saucer-shaped, thin , indistinct, without thickening along hydrothecal wall, in empty hydrothecae line of attachment of hydranth marked by a row of internal upward-facing, thorn- like desmocytes.