Receptacle (botany): Difference between revisions
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==Angiosperms== |
==Angiosperms== |
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[[Image:Ovary position.svg|thumb|'''Angiosperms'''<br/>The receptacle (grey) in relation to the [[ovary (botany)|ovary]] (red) in three types of flowers: |
[[Image:Ovary position.svg|thumb|'''Angiosperms'''<br/>The receptacle (grey) in relation to the [[ovary (botany)|ovary]] (red) in three types of flowers: [[hypogynous]] (I), [[perigynous]] (II), and [[epigynous]] (III)]] |
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In [[botany]], the '''receptacle''' or '''torus''' (an older term is thalamus, as in [[Thalamiflorae]]) is the thickened part of a stem (pedicel) from which the [[flower]] organs grow. In some [[accessory fruit]]s, for example the [[pome]] and [[strawberry]], the receptacle gives rise to the edible part of the fruit. The fruit of ''[[Rubus]]'' species is a [[Aggregate fruit|cluster]] of [[drupe]]lets on top of a [[cone (geometry)|conical]] receptacle. When a raspberry is picked, the receptacle separates from the fruit, but in blackberries, it remains attached to the fruit.<ref>[http://www.uga.edu/fruit/rubus.html Blackberry and Raspberry] — [http://www.uga.edu/fruit/ Mark Rieger]</ref> |
In [[botany]], the '''receptacle''' or '''torus''' (an older term is thalamus, as in [[Thalamiflorae]]) is the thickened part of a stem (pedicel) from which the [[flower]] organs grow. In some [[accessory fruit]]s, for example the [[pome]] and [[strawberry]], the receptacle gives rise to the edible part of the fruit. The fruit of ''[[Rubus]]'' species is a [[Aggregate fruit|cluster]] of [[drupe]]lets on top of a [[cone (geometry)|conical]] receptacle. When a raspberry is picked, the receptacle separates from the fruit, but in blackberries, it remains attached to the fruit.<ref>[http://www.uga.edu/fruit/rubus.html Blackberry and Raspberry] — [http://www.uga.edu/fruit/ Mark Rieger]</ref> |
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In the [[Asteraceae|Daisy family (Compositae or Asteraceae]], small individual flowers are arranged on a round or dome-like structure that is also called [[Asteraceae#Floral heads|receptacle]]. |
In the [[Asteraceae|Daisy family (Compositae or Asteraceae)]], small individual flowers are arranged on a round or dome-like structure that is also called [[Asteraceae#Floral heads|receptacle]]. |
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==Algae and bryophyta== |
==Algae and bryophyta== |
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Revision as of 09:17, 28 April 2018
Angiosperms
The receptacle (grey) in relation to the ovary (red) in three types of flowers: hypogynous (I), perigynous (II), and epigynous (III)
In botany, the receptacle or torus (an older term is thalamus, as in Thalamiflorae) is the thickened part of a stem (pedicel) from which the flower organs grow. In some accessory fruits, for example the pome and strawberry, the receptacle gives rise to the edible part of the fruit. The fruit of Rubus species is a cluster of drupelets on top of a conical receptacle. When a raspberry is picked, the receptacle separates from the fruit, but in blackberries, it remains attached to the fruit.[1]
In the Daisy family (Compositae or Asteraceae), small individual flowers are arranged on a round or dome-like structure that is also called receptacle.
Algae and bryophyta
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Receptacles at the end of Fucus branches
In phycology, receptacles are structures at the ends of branches of algae mainly in the brown algae or Heterokontophyta in the Order Fucales. They are specialised structures which contain the reproductive organs called conceptacles.[2] Receptacles also function as a structure that captures food.
References
- ^ Blackberry and Raspberry — Mark Rieger
- ^ Fletcher, R.L. (1987). Seaweeds of the British Isles. Volume 3, Part 1. Natural History Museum, London. ISBN 0-565-00992-3
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