On the Agency of Bees in the Fertilisation of Papilionaceous Flowers. "Gardeners' Chronicle", page 725, 1857.
On the Tendency of Species to form Varieties; and on the Perpetuation of Varieties and Species by Natural Means of Selection. By Charles Darwin, Esq., F.R.S., F.L.S., and F.G.S., and Alfred Wallace, Esq. [Read July 1st, 1858.] Journal of the Linnean Society 1859, volume iii. ("Zoology"), page 45.
Special titles of Charles Darwin's contributions to the foregoing:—
i. Extract from an unpublished work on Species by Charles Darwin Esq., consisting of a portion of a chapter entitled, "On the Variation of Organic Beings in a State of Nature; on the Natural Means of Selection; on the Comparison of Domestic Races and true Species."
ii. Abstract of a Letter from C. Darwin, Esq., to Professor Asa Gray, of Boston U.S., dated September 5, 1857.
On the Agency of Bees in the Fertilisation of Papilionaceous Flowers, and on the Crossing of Kidney Beans. "Gardeners' Chronicle", 1858, page 828 and Annals of Natural History 3rd series ii. 1858, pages 459-465.
Do the Tineina or other small Moths suck Flowers, and if so what Flowers? "Entomological Weekly Intelligencer" volume viii. 1860, page 103.
Note on the achenia of Pumilio Argyrolepis. "Gardeners' Chronicle", January 5, 1861, page 4.
Fertilisation of Vincas. "Gardeners' Chronicle", pages 552, 831, 832. 1861.
On the Two Forms, or Dimorphic Condition, in the species of Primula, and on their remarkable Sexual Relations. Linnean Society Journal vi. 1862 ("Botany"), pages 77-96.