ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] I studied Asclepias exaltata, a herbaceous, perennial milkweed, in southeastern Michigan. Each hermaphroditic flower has five pollinaria, each of which consists of two pollinia composed of about 180 fused pollen grains. The intricate pollination mechanism is like that of other milkweeds12. A ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/305706a0
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