Pollination Biology, Seed Dispersal, and Recruitment in Rudbeckia auriculata (Perdue) Kral, a Rare Southeastern Endemic

Managing rare endemic plants often requires an understanding of their reproductive ecology. We investigated pollination biology, seed set, seed dispersal, and seedling recruitment of Rudbeckia auriculata (Asteraceae), a species endemic to the Southeastern United States. Based on observations of poll...

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Bibliographic Details
Published in:Castanea 2006-09, Vol.71 (3), p.226-238
Main Authors: Diamond, Alvin R, Folkerts, Debbie R, Boyd, Robert S
Format: Article
Language:English
Subjects:
Andrena
Andrena aliciae
Asteraceae
Castanea
CONTENTS
Flowers
indigenous species
Insect pollination
Plants
Pollen
Pollinating insects
Pollination
Rudbeckia
Rudbeckia auriculata
Seed dispersal
Seed set
Seedlings
Stems
Vegetation
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Summary:Managing rare endemic plants often requires an understanding of their reproductive ecology. We investigated pollination biology, seed set, seed dispersal, and seedling recruitment of Rudbeckia auriculata (Asteraceae), a species endemic to the Southeastern United States. Based on observations of pollinator abundance and pollen load on floral visitors, the most likely pollinators are primarily native bees, particularly Andrena aliciae Robertson in medium and large populations of R. auriculata, and Halictids in small populations. Seed set varied from 0.24% to 16.9% in small populations (
ISSN:0008-7475
1938-4386
DOI:10.2179/05-20.1