Ochrea, (Latin  ochrea, greave  or protective legging), also spelled 
ocrea, is a plant structure formed of stipule s fused into a sheath
Kaynak: OchreaAround the stem of both these species there is a papery sheath known as a 
ocrea with stiff spine-like hairs at the top, but in P.
Kaynak: Polygonum caespitosumequipment styled on that of a warrior from Samnium : a short sword (gladius ), a rectangular shield (scutum ), a greave  (
ocrea), and a helmet.
Kaynak: Samnite (gladiator type)While it superficially resemble bindweeds in the genus Convolvulus  there are many notable differences; it has 
ocrea (stipule-sheath at
Kaynak: Fallopia convolvulusOn his right arm, he wore a manica  (a heavy linen or metal wrapping tied with leather thongs), and on his left leg, he wore an 
ocrea  (a
Kaynak: SecutorThe leaves are lance -shaped and are connected at the node by a membranous sheath, or 
ocrea.  The 
ocrea is not fringed.  The plant flowers
Kaynak: Polygonum pensylvanicumDistinctive circular, cup-shaped leafy structures, called 
ocrea s, surround the stem at intervals.  and fruits, emerge from within the 
ocreas.
Kaynak: Persicaria perfoliataterm 
ocrea | content 
ocrea  (ochrea)defn a sheath, formed from two stipules, encircling the node in Polygonaceae. term odd-pinnate | content
Kaynak: Glossary of botanical termsSerpulorbis colubrinus | binomial_authority (Röding, 1798) | synonyms_ref  | synonyms Serpula colubrina Röding, 1798 Serpula 
ocrea Gmelin, 1791
Kaynak: Serpulorbis colubrinusThe stems have nodes covered by an 
ocrea , a thin, paper-like membrane - a characteristic of the Polygonaceae  family. Large clusters of
Kaynak: Rumex obtusifoliusIn some species the 
ocrea, a thin flange where the leaf meets the stem, is enlarged and harbors ants. As hapaxanth s, after a prolonged
Kaynak: LaccospermaDescription: They have persistent or deciduous 
ocrea.  The inflorescences are terminal and panicle-like with pedicels.  The hermaphrodite
Kaynak: Rheum (plant)In the USA , it is very similar to Pennsylvania smartweed , but Redshank has a fringe of hairs at the top of the 
ocrea, something which
Kaynak: Persicaria maculosaThose species that do not have the nodal 
ocrea can be identified by their possession of involucrate  flower heads .  The flower s are
Kaynak: PolygonaceaeCalifornia  The specific epithet  is derived from the Latin  ocrěātus 'wearing greaves' from 
ocrea 'greave  referring to its loose, baggy volva .
Kaynak: Amanita ocreatanickname. William of Malmesbury  and Orderic Vitalis  report that Robert's father, King William, called him brevis-
ocrea ("short boot") in derision.
Kaynak: Robert Curthose(cassis ), coats of mail (catafracta ), greave s (
ocrea), shields (scutum ), larger swords (gladius maior), which they call broadswords
Kaynak: Roman military personal equipment