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Which Rosales families have male and female flowers instead of bisexual flowers?
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Rosales
Red garden roses (Rosa hybrid). Whereas wild roses have only five petals, most hybrid varieties have been bred to produce numerous petals in a wide range of colours.
Within the order Rosales, the suborder Urticineae is characterized by a trend toward floral reduction, where flowers are often reduced to either male or female structures rather than being bisexual.1
Specifically, the families within this group that exhibit this reduction are:
- Moraceae (the fig family)1
- Urticaceae (the nettle family)1
- Cannabaceae (which includes Cannabis and Humulus)1
While the Ulmaceae (elm family) is also part of this suborder, it is considered the least derived of the four and still possesses bisexual flowers.1