Species Overview

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KeyPics/cc110A.jpg

Xestospongia edaphus (de Laubenfels, 1930).

Synonyms:
Sigmadocia edaphus (de Laubenfels, 1930) .
Gellius edaphus de Laubenfels

SPONGE:
Shape: Massive or encrusting
Size_thickness( Massive ): to 20 cm
Size_Thickness (Encrusting): to 2 cm
Color_Alive: Buff-white or lavender
Consistency: Friable to stony hard.
HABITAT:
Benthic Region: Marine: Low intertidal to Subtidal
Distribution: Southern California to Northern California

CHARACTERS

Surface:
Texture: superficially smooth
Skeleton:
Composition: Silicate
Architecture: skeleton with a greater abundance of confused spicules but a basic isodictyal pattern remains. Vertical paucispicular tracts with cross spicules oriented horizontally and diagonally.
Oscula:
Shape: oval round
Diameter: -1- mm
Ectosome:
Architecture: reticulation near the surface provided with much spongin
Choanosome:
Architecture: skeleton with a greater abundance of confused spicules but a basic isodictyal pattern remains. Vertical paucispicular tracts with cross spicules oriented horizontally and diagonally.
Megasclere:
Shape: Oxeas
Length: 260 -275- 300 Ám
Width: 12 -13- 15 Ám
Microsclere:
Shape: Sigmas
Length: 46 -(52|81)- 118 Ám
Microsclere:
Shape: Sigmas with unequal arms
Length: 75 -(87|96)- 118 Ám