Everything about The Laurales totally explained
The
Laurales are an order of
flowering plants. They are a basal group of
dicots, related to, and formerly sometimes included in, the
Magnoliales.
The order includes about 2500-2800 species from 85-90 genera, which comprise seven families of
trees and
shrubs. Most of the species are tropical and subtropical, though a few genera reach the temperate zone. The best known species in this order are those of the
Lauraceae (for example
bay laurel or
Laurus,
cinnamon or
Cinnamomum,
avocado or
Persea, and
Sassafras), and the spice bush or
Calycanthus of the Calycanthaceae.
The earliest lauraceous
fossils are from to the early
Cretaceous. It is possible that the ancient origin of this order is one of the reasons for its highly diverged morphology. Indeed, presently no single morphological property is known, which would unify all the members of Laurales. This fact used to cause much argument among botanists regarding the correct circumscription of the order, and the presently accepted classification is based on recent molecular and genetic analysis.
The following families are included in the
Angiosperm Phylogeny Group system:
Under the older
Cronquist system, the Laurales included a slightly different set of families (current placement, where different, in brackets):
Family Amborellaceae (Order Amborellales)
Family Calycanthaceae
Family Gomortegaceae
Family Hernandiaceae
Family Idiospermaceae (= Calycanthaceae pro parte)
Family Lauraceae
Family Monimiaceae (Cronquist included Atherospermataceae and Siparunaceae in Monimiaceae)
Family Trimeniaceae (unplaced in basal group)Further Information
Get more info on 'Laurales'.
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