Abstract
Cleistes macrantha (Barb. Rodr.) Schltr. is widely distributed in Atlantic rain forests in south and southeastern Brazil, occurring in anthropogenic disturbed areas and in restinga vegetation. Aspects of the floral biology of C. macrantha were investigated in the Intervales nature reserve, in the interior of Sao Paulo state. This species offers nectar as reward and is pollinated principally by bumblebees. The nectar is secreted before the anthesis of the flowers, with no posterior secretion. Hermit hummingbirds can also act as pollinators. A previous visit of a bumblebee, however, is necessary for pollen deposition on their bills. Bumblebees are responsible for most cross-pollinations. The hummingbirds perform mainly self-pollination. Preliminary treatments reveal that C. macrantha is self-compatible, but a pollinator is necessary for successful pollination. In spite of the self-compatibility observed, ecological factors favor cross-pollination in this species. This study makes too, a comparison of the floral biology of C. macrantha with what is known about the genera of the North American-Asiatic clade in Pogoniinae.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
