Haeckel
Diagnosis: Radial tubes 60-70, cylindrical to club-shaped, in the latter case gradually thickened towards the distal end. Terminal branches stellate, numerous (5 to 10 or more), diverging in all directions, smooth, straight or slightly curved, slenderly conical, 3 to 5 times as long as the distal breadth of the tube. Branches very variable in size, sometimes very small.
Length of tubes: 0.4-0.8 mm.