Description:-
Dark, thick, cup shaped sponge with undulated margin. Dark brownish colour. Distinctly pedunculate and have the same general external appearance although varying widely in details of form. Specimens may also appear orange. Spicules: These are fairly stout, gradually sharp-pointed, usually curved styli, averaging about 0.135 by 0.0157mm., in size. The small and slender styli (actuates) are scarce in my specimens.
References:-
Biju Kumar, A. 2012. ‘Kerala Theerathe Kadal Jeevikal’ (Marine Animals of Kerala coast- A Field Guide). Kerala State Biodiversity Board, Thiruvananthapuram, Kerala, 304 pp. (In Malayalam)
Dendy, A., 1887. The Sponge Fauna of Madras. J. The Annals and Magazine of Natural History (Fifth series). No.117. Chapter XVI. pp.153-169.
van Soest, R. (2014). Axinella donnani (Bowerbank, 1873). In: Van Soest, R.W.M; Boury-Esnault, N.; Hooper, J.N.A.; Rützler, K.; de Voogd, N.J.; Alvarez de Glasby, B.; Hajdu, E.; Pisera, A.B.; Manconi, R.; Schoenberg, C.; Janussen, D.; Tabachnick, K.R., Klautau, M.; Picton, B.; Kelly, M.; Vacelet, J.; Dohrmann, M.; Díaz, M.-C.; Cárdenas, P. (2014) World Porifera database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=165477 on 2014-12-10