Microscleres present. May include Sigmaspires Spiny Sigmas, Asters or Microxeas. The latter are in the range of 35 - 100 Ám long.|
de Laubenfels, 1930|
Pedunculate-clavate to irregularly massive to 8 cm. high.
Consistency: spongy to cartilaginous.
Surface: superficially hirsute with repent, exceedingly thin spicules matted together.
Oscula: oval, flush.
Color: Alive: Dull red with green patches. Preserved: Dull red.
Rhabd diameter 1 - 6 Ám.
Clad length 30 - 90 Ám.
(2)Oxeas with filiform tip:
x 9 Ám.
(3) Anatriaenes (rare):
Rhabd diameter 3 - 7 Ám.
Clad length 20 - 30 Ám.
Chord 30 - 40 Ám.
Ectosome: Packed with Protriaenes, clads outward, arranged in non-erect brushes.
Choanosome: In Clavate form, a central axis of packed spicules. This surrounded by large chambers with the outer walls with spicules in confusion. In massive forms, no central core.
Distribution: Southern to ?Central California.
Depth: Subtidal to Deep water.