T.  Scharaschkin and Doyle, J. A., ?Character evolution in Anaxagorea (Annonaceae)?, American Journal of BotanyAmerican Journal of Botany, vol. 93, pp. 36-54, 2006.

G.  Gottsberger, ?How diverse are Annonaceae with regard to pollination??, Botanical Journal of the Linnean SocietyBotanical Journal of the Linnean Society, vol. 169, pp. 245-261, 2012.

G.  Gottsberger, ?How diverse are Annonaceae with regard to pollination??, Botanical Journal of the Linnean Society, vol. 169, pp. 245-261, 2012.