Neiland, M. R. M.; Wilcock, C. C. (1998). "Fruit set, nectar reward, and rarity in the Orchidaceae". American Journal of Botany. 85 (12): 1657–1671. doi:10.2307/2446499. JSTOR2446499. PMID21680327. (subscription required)
jstor.org
Neiland, M. R. M.; Wilcock, C. C. (1998). "Fruit set, nectar reward, and rarity in the Orchidaceae". American Journal of Botany. 85 (12): 1657–1671. doi:10.2307/2446499. JSTOR2446499. PMID21680327. (subscription required)
Neiland, M. R. M.; Wilcock, C. C. (1998). "Fruit set, nectar reward, and rarity in the Orchidaceae". American Journal of Botany. 85 (12): 1657–1671. doi:10.2307/2446499. JSTOR2446499. PMID21680327. (subscription required)