Identifying Sponges

Key to California Porifera (Page 168)

( From page 167 B) Tornotes > 157 μm; Acanthostyles forming tracts to the surface.
[A]
Acanthostyles 2 size classes, both equally abundant; Largest > 250 μm.
Tornotes: 164 - 291 μm.
cc168A.jpg
Lissodendoryx sp. 6 [of Lee]
Sponge: Thick encrusting to 1.5 cm. Consistency: moderately firm. Surface: smooth, verrucose, with some ridges and folds. Oscula: round, flush or in crevices.
Color: Alive: Dull orange to pale yellow, flesh ochre (Ridgway), pale salmon.
Spicules: Megascleres: (1) Acanthostyles: 115 -161-164 - 182 um.
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(2) Acanthostyles: 218 -272-297- 309 um.
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(3) Tornotes: 164 -232-249- 291 um.
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Microscleres:
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(1) Arcuate Isochelae: 15 -19-20- 22 um.
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Skeleton: Ectosome: Packed with parallel Tornotes and large numbers of Isochelae; The surface penetrated by tips of Acanthostyles. Choanosome: Plumose to confused with numerous multispicular parallel tracts rising to the surface.
Distribution: Southern California.
Depth: Subtidal to 34 m.
[B]
Acanthostyles 1 size class; Largest < 250 μm.
Tornotes: 162 - 205 μm.
Lissodendoryx sp. 4 [of Lee]
Sponge: Irregular encrusting, somewhat foliaceous.
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