ONLINE IMAGE COLLECTION
 | | Image Title: A unisexual umbel of Bomarea acutifolia | | AJB Editor: Karl Niklas, Cornell University | | Intended End User: Teacher, Student | | License Details: BSA - Terms for Image Use | | For Larger Version (click here) | About the Image | A unisexual (early male) umbel of Bomarea acutifolia, a hummingbird-pollinated vine in the mountains of Costa Rica. Following the male phase, each flower continues to produce nectar during a week-long neuter phase and then becomes female. Thus, each umbel is temporally unisexual and opportunities for self-pollination are limited. | | Link to the AJB Abstract for the article: | Protrandry, a neuter phase, and unisexual umbels in a hermaphroditic, Neotropical vine (Bomarea acutifolia, Alstroemeriaceae) |
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