Identifying Sponges

Key to California Porifera (Page 144)

( From page 143 A) Immature Styles looking like Raphides may be present; Onychaetes absent.
[A]
Immature Styles look like Raphides.
No Onychaetes present.
cc144A.jpg
Lissodendoryx (Lissodendoryx) topsenti (de Laubenfels, 1930)
Sponge: Thickly encrusting to massive up to 3 cm thick and more than 3 cm. in diameter. Consistency: spongy. Surface: superficially smooth with numerous tubercles less than 1 μm high.
Color: Alive: Reddish-orange.
Spicules: Megascleres: (1) Subtylostyles: 250 um. x 11 um. (2) Tylotes: 200 um. x 8 um. (3) Rhaphides ( = immature Styles that look like Rhaphide): 180 um. x 2 um.
Skeleton: Ectosome: A thin dermal membrane with tangentially arranged Tylotes. (originally designated as Tornotes) The dermis is underlain by upright or random Tylotes-Subtylotes which also occur interstially in the choanosome. Choanosome with multispicular, sinuous tracts of Subtylostyles to Styles.
Distribution: Southern and Central California.
Depth: Intertidal to subtidal.
Note: The Rhaphides reported by de Laubenfels,1932, are immature styles. See page 121 A for more complete description.
[B] GO TO PAGE 145
NO Rhaphides.
Onychaetes present.
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