Identifying Sponges

Key to California Porifera (Page 005)

( From page 004 B) Styles ONLY, size < 500 μm.
Surface with long, often branched ridges and coarsely rugose with low, rounded or irregular processes.
Hymeniacidon ungodon de Laubenfels, 1932
Sponge: Encrusting to massive. Surface: Coarsely rugose. Oscula: Infrequent, oval, the long axis about 1 mm.
Color: Alive: Mahogany brown ectosome over yellow-drab choanosome; bright yellow, yellow-orange, cinnamon brown, or purple with yellow-ochre choanosome.
Spicules: Megascleres: (1) Styles: 130 - 252 um. x 3.4 - 10.2 um.
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Skeleton: Ectosome densely packed with styles in confusion, not readily detachable. Choanosome with spicules in confusion, sometimes with vertical tracts.
Distribution: Central California.
Depth: Intertidal to subtidal.
[B] GO TO PAGE 006
Surface more or less smooth, not coarsely rugose and no branched ridges, but may be conulose or have digitate processes.
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