Identifying Sponges

Key to California Porifera (Page 063)

( From page 062 B) Microscleres other than Toxas ONLY.
[A] GO TO PAGE 064
Microscleres are Palmate Isochelae ONLY.
These of 1 size class or 2. If 1 size class, > 19 μm
Megascleres are Styles of only 1 kind.
No thick or thin forms.
Microscleres are Palmate Isochelae of 1 size class (< 19 μm) and Toxas. Toxas may be absent.
Megascleres are Styles to Subtylostyles of 2 kinds, thick and thin.
(de Laubenfels, 1930)
Sponge: Encrusting to 3 - 16 mm thick.
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