Robert William Cruden, Sharon Kinsman, Robert E. Stockhouse II, Yan B. Linhart, Pollination, Fecundity, and the Distribution of Moth-Flowered Plants, Biotropica, Vol. 8, No. 3 (Sep., 1976), pp. 204-210
No takes yet. Share an insight, caveat, or question.
Cruden et al. (1976) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: