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This allowed them to identify a signal emitted by the maternal tissue that attracts pollen tubes by leading them to elongate along the stamen tissue and reach the site of fertilization.

The hairy flower has a clear, glossy bottom and a yellow-orange tube that contains its stamens.

Positively charged hummingbirds pull negatively charged plant stamens toward their beaks.

Instead, the rodents brush against the scores of scarlet stamens, which carry the pollen that could then cling to the their fur coats until being transferred to another feijoa tree.

Later that day, her students would tear those silky petals from their stems, counting stamens and pistils to learn botany.