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Patterns of nectar production and composition, and morphology of floral nectaries in Helicteres guazumifolia and Helicteres baruensis (Sterculiaceae): two sympatric species from the Costa Rican tropical dry forest

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Academic year: 2020

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Figure

Fig. 1. Mean nectar production (µl) by flowers of H. guazumifolia during the day. Standard error and standard deviation are  shown
Fig. 3. Mean sugar concentration (µg/µl) of nectar of H. guazumifolia according to the time of the day
Fig. 4. Mean sugar concentration (µg/µl) of nectar of H. baruensis according to the time of the day or night
Fig. 5. Floral nectary of H. guazumifolia A, B and H. baruensis C, D. Bars = 2 mm (A, C, D) and 500 µm (B).
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