1. Pollinator-mediated selection of flower-tube length in a hawkmoth-pollinated Gladiolus (Iridaceae);Alexandersson,2002
2. The proboscis of the long-tongued Ancyloscelis bees (Anthophoridae/Apoidea), with remarks on flower visits and pollen collecting with the mouthparts;Alves dos Santos;Journal of the Kansas Entomological Society,2000
3. An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II;Angiosperm Phylogeny Group;Botanical Journal of the Linnean Society,2003
4. Notes on the pollination of flowers in India. Note No. 1. The pollination of Thunbergia grandiflora, Roxb., in Calcutta;Burkill;Journal and Proceedings of the Asiatic Society of Bengal, N.S.,1906
5. ‘Anti-bee’ and ‘pro-bird’ changes during the evolution of hummingbird pollination in Penstemon flowers;Castellanos;Journal of Evolutionary Biology,2004