Pyrena
Encyclopedia
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- This article is about a subject of plant anatomyPlant anatomyPlant anatomy or phytotomy is the general term for the study of the internal structure of plants. While originally it included plant morphology, which is the description of the physical form and external structure of plants, since the mid-20th century the investigations of plant anatomy are...
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For 'Pyrene', or other uses of 'Pyrena', see Pyrene (disambiguation)Pyrene (disambiguation)Pyrene may refer to:*Pyrene, a chemical compound.*Pyrene , consort of Ares and the mother of Cycnus in Greek mythology*Pyrene, a Celtic city near the sources of the Danube mentioned by Herodotus: see Heuneburg#Pyrene?...
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For 'Pirene', see PirenePireneIn Greek mythology, Pirene or Peirene , a nymph, was either the daughter of the river god Asopus, Laconian king Oebalus, or the River God Achelous, depending on different sources. By Poseidon she became the mother of Lecheas and Cenchrias...
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- This article is about a subject of plant anatomy
Pyrena or pyrene is the name for a nutlet
Nutlet
Nutlet may refer to one of the following.*A small nut.*In botany, a nutlet is a pyrena or pyrene, which is a seed covered by a stony layer, such as the kernel of a drupe....
resembling a seed
Seed
A seed is a small embryonic plant enclosed in a covering called the seed coat, usually with some stored food. It is the product of the ripened ovule of gymnosperm and angiosperm plants which occurs after fertilization and some growth within the mother plant...
, or the kernel of a drupe
Drupe
In botany, a drupe is a fruit in which an outer fleshy part surrounds a shell of hardened endocarp with a seed inside. These fruits develop from a single carpel, and mostly from flowers with superior ovaries...
or drupelet.