Identifying Sponges

Key to California Porifera (Page 232)

( From page 228 B) Sponge oval, subspherical, pear-shaped OR amorphous; NO stalk.
[A]
Conspicuous oscular fringe.
Oxeas to 5000 μm or greater.
cc232A.jpg
Leucandra heathi (Urban, 1905)
Sponge: Subspherical, pear-shaped. Oscula: conspicuous oscular fringe to 7 mm high.
Color: Alive: White.
Spicules: Megascleres: (1) Oxeas: 700 - 2000 um. x 50 um. (2) Oxeas (large): 3400 - 5000 um. x 30 - 150 um. (3) Oxeas (coronal): 5000 - 10000 um. x 4 - 12 um. (4) Saggital Triradiates (rays): 140 - 200 um. x 10 um. (5) Triradiates (rays): 130 - 250 um. x 10 um. Microscleres: (1) Microxeas: 50 - 140 um. x 4 um.
Skeleton: Leuconoid.
Distribution: Southern to Northern California.
Depth: Intertidal to deep water.
Note: See L. apicalis of Sim & Bakus, 1986. The authors note that L. apicalis differs from L. heathi in having Quadriradiates. However, they do not show measurements for any Quadriradiates, noting only that they are rare.
[B] GO TO PAGE 233
NO oscular fringe.
Oxeas to 100 μm.
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