Morphological description (show/hide)
| thickly encrusting, fistulose, fistules short | | black with beige base in water, black with be | | black with beige base | | singular, moderately small, apical on fistules | | tough, compressible, difficult to tear | | fleshy, collagenous, heavily pigmented, uneven, conulose | | fibrous, irregular reticulation of primary fibres and some secondary fibres, primary fibres fully cored by sand and foreign spicule detritus, commonly fasciculate, secondary fibres simple, uncored, fewer in number than primary fibres, all fibres laminated, contain diffuse pith, collagen filaments abundant in choanosome, knobbed, moderately well-developed, mesohyl collagen light, homogeneous, contains small pigment granules | | membranous, arenaceous, with sand grains and foreign spicule fragments incorporated into peripheral fibres, embrane with abundant pigment granules incorporated into collagen | | nil | | nil |
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