Glossary of Plant Anatomy

Enter term:

ABCDEFGHIJKLMNOPQRSTUVWXYZ
ear apical meristem [PO:0006375; plant anatomy term ]
An inflorescence apical meristem that gives rise to the maize ear.
More

ear floret [PO:0006354; plant anatomy term ]
A small, pistillate flower (PO:0025599) that is part of a ear spikelet (PO:0006320).
More

ear inflorescence [PO:0020136; plant anatomy term ]
A pistillate inflorescence (PO:0025598) in Zea species that is highly compacted and bears the ear spikelets (PO:0006320) on a lateral inflorescence axis (PO:0020122).
More

ear inflorescence branch meristem [PO:0009110; plant anatomy term ]
An inflorescence branch meristem (PO:0009105) that gives rise to a branch of an ear inflorescence (PO:0020136).
More

ear infructescence [PO:0025597; plant anatomy term ]
An infructescence (PO:0006342) in Zea species that bears kernels (i.e. fruit; PO:0009001) on a compact infructescence axis (PO:0025242) and develops from the ear inflorescence (PO:0020136).
More

ear meristem [PO:0009109; plant anatomy term ]
The meristem which gives rise to the female inflorescence or ear in maize.
More

ear pedicellate spikelet [PO:0006348; plant anatomy term ]
Ultimate pedicellate inflorescence branch of the maize ear that develops from the spikelet pair meristem.
More

ear peduncle [PO:0006418; plant anatomy term ]
A peduncle of a maize ear, below the lowest ear node.
More

ear sessile spikelet [PO:0006349; plant anatomy term ]
Ultimate sessile inflorescence branch of the maize ear that develops from the spikelet pair meristem.
More

ear spikelet [PO:0006320; plant anatomy term ]
A spikelet (PO:0009051) that is part of the ear inflorescence (PO:0020136) and bears a single ear floret (PO:0006354) at maturity.
More

ear spikelet meristem [PO:0006378; plant anatomy term ]
Apical meristem that gives rise to the upper and lower florets of the maize ear spikelet.
More

ear spikelet pair meristem [PO:0006360; plant anatomy term ]
An ear inflorescence branch meristem (PO:0009110) that produces two ear spikelet meristems (PO:0006378), each of which produces two flower meristems (PO:0000229) in an ear inflorescence (PO:0020136).
More

ear spikelet rachilla [PO:0006380; plant anatomy term ]
The axis of the ear spikelet, above the glumes.
More

early wood [PO:0004515; plant anatomy term ]
A portion of secondary xylem (PO:0005848) that is a part of a growth ring (PO:0004514) formed during the early part of a growing season, has lower density than late wood (PO:0004516) of the same growth ring, and has as parts early wood tracheary elements (PO:0025461) with generally larger lumens than the late wood tracheary elements (PO:0025462) of the same growth ring.
More

early wood tracheary element [PO:0025461; plant anatomy term ]
A tracheary element that is part of a portion of early wood (PO:0004515).
More

egg apparatus [PO:0020096; plant anatomy term ]
A cardinal organ part that has as parts an egg cell and two synergids and is located at the micropylar end of the embryo sac.
More

eighth order inflorescence branch [PO:0025110; plant anatomy term ]
An inflorescence branch (PO:0009081) arising from an seventh order inflorescence branch (PO:0025109).
More

eighth order infructescence branch [PO:0025254; plant anatomy term ]
An infructescence branch (PO:0025243) arising from a seventh order infructescence branch (PO:0025253).
More

elaiosome [PO:0020062; plant anatomy term ]
A cardinal organ part that is an oil-secreting outgrowth of a seed or fruit.
More

embryo apical cell [PO:0025284; plant anatomy term ]
A sporophyte meristematic apical cell that is part of a plant embryo and is the uppermost cell formed after the first division of a zygote.
More

embryo basal cell [PO:0002002; plant anatomy term ]
A native plant cell (PO:0025606) that is the lower-most cell formed after the first division of the plant zygote (PO:0000423) and is part of a plant embryo (PO:0009009).
More

embryo coleorhiza [PO:0025288; plant anatomy term ]
A coleorhiza (PO:0020034) that is part of a plant embryo (PO:0009009).
More

embryo cortex [PO:0005014; plant anatomy term ]
A portion of cortex (PO:0005708) that is part of a plant embryo (PO:0009009).
More

embryo endodermis [PO:0005015; plant anatomy term ]
A portion of endodermis (PO:0000252) that is part of an plant embryo (PO:0009009).
More

embryo epicotyl [PO:0025292; plant anatomy term ]
An epicotyl (PO:0020035) that is part of a plant embryo (PO:0009009).
More

embryo hypocotyl [PO:0025290; plant anatomy term ]
A hypocotyl (PO:0020100) that is part of a plant embryo axis (PO:0019018).
More

embryo hypocotyl-root junction [PO:0025300; plant anatomy term ]
A hypocotyl-root junction (PO:0004724) that is part of an plant embryo axis (PO:0019018).
More

embryo hypophysis [PO:0020109; plant anatomy term ]
A native plant cell (PO:0025606) that is the uppermost cell of a suspensor (PO:0020108) and from which part of the root (PO:0009005) and root cap (PO:0020123) in a plant embryo (PO:0009009) of angiosperms are derived.
More

embryo leaf [PO:0006338; plant anatomy term ]
A vascular leaf that is part of a plant embryo and is one of the first few leaves to develop from the embryonic shoot apical meristem.
More

embryo mesocotyl [PO:0025294; plant anatomy term ]
A mesocotyl (PO:0020037) that is part of a plant embryo (PO:0009009).
More

embryo plant cell [PO:0025028; plant anatomy term ]
A native plant cell (PO:0025606) that is part of a plant embryo (PO:0009009).
More

embryo plant structure [PO:0025099; plant anatomy term ]
A plant structure (PO:0009011) that is part of an plant embryo (PO:0009009).
More

embryo root [PO:0000045; plant anatomy term ]
A root (PO:0009005) that is initiated in a developing plant embryo (PO:0009009).
More

embryo sac [PO:0025074; plant anatomy term ]
A megagametophyte (PO:0025279) that is located in a plant ovary ovule (PO:0025490).
More

embryo sac cell [PO:0025026; plant anatomy term ]
A native plant cell (PO:0025606) that is part of an embryo sac (PO:0025074).
More

embryo sac central cell [PO:0020090; plant anatomy term ]
An embryo sac cell (PO:0025026) that is largest cell in a mature embryo sac (PO:0025074).
More

embryo sac egg cell [PO:0025123; plant anatomy term ]
A plant egg cell (PO:0020094) that is part of an egg apparatus (PO:0020096).
More

embryo shoot apical meristem [PO:0006362; plant anatomy term ]
A vegetative shoot apical meristem at the apex of the embryonic axis.
More

embryo vascular system [PO:0008011; plant anatomy term ]
Vascular system of embryo.
More

embryogenic callus [PO:0006091; plant anatomy term ]
A cultured plant callus (PO:0000009) that is capable of forming somatic embryos.
More

endarch protoxylem [PO:0025557; plant anatomy term ]
A portion of protoxylem (PO:0000272) tissue in which the maturation of primary xylem (PO:0005849) of the shoot system (PO:0009006) progresses centrifugally, with the oldest elements (protoxylem) towards the center of the plant axis (PO:0025004).
More

endocarp [PO:0009086; plant anatomy term ]
A portion of plant tissue (PO:0009007) that is the innermost differentiated layer of a pericarp (PO:0009084).
More

endodermal passage cell [PO:0006208; plant anatomy term ]
Cell in the endodermal layer of the root with cell wall that remains non-thickened.
More

endodermis [PO:0000252; plant anatomy term ]
A portion of ground tissue (PO:0025059) that is the inner most layer of a cortex (PO:0005708) and has a casparian strip in its anticlinal cell walls.
More

endosperm [PO:0009089; plant anatomy term ]
A maximal portion of nutritive plant tissue in a seed.
More

endosperm parenchyma [PO:0005415; plant anatomy term ]
A portion of seed storage parenchyma that is part of an endosperm.
More

endotegmen [PO:0006219; plant anatomy term ]
That part of the seed coat that develops from the inner epidermis of the inner integument.
More

endotesta [PO:0006051; plant anatomy term ]
That part of the seed coat that develops from the inner epidermis of the outer integument.
More

endothelium [PO:0020024; plant anatomy term ]
A portion of plant tissue composed of cells of the inner epidermis of the inner (or only) integument of the ovule that are radially elongated and metabolically very active.
More

ensiform vascular leaf [PO:0025333; plant anatomy term ]
A unifacial leaf that is flat in cross section due to a lamina that develops in a median plane (perpendicular to the axis), rather a transverse plane (tangent to the axis) throughout all of part of the length of the leaf.
More

epiblast [PO:0020036; plant anatomy term ]
A portion of plant tissue that is a flap-like projection of the coleorhiza, inserted opposite the scutellum.
More

epicalyx [PO:0009063; plant anatomy term ]
A collective phyllome structure (PO:0025023) composed of two or more phyllomes immediately outside the calyx (PO:0009060).
More

epicalyx bract [PO:0025577; plant anatomy term ]
A flower bract (PO:0009034) that is part of the epicalyx (PO:0009063).
More

epicormic shoot system [PO:0004546; plant anatomy term ]
A shoot-borne shoot system (PO:0004546) developing from a stem (PO:0009047).
More

epicotyl [PO:0020035; plant anatomy term ]
The first stem internode (PO:0020142) above the cotyledonary node (PO:0025321) of a plant embryo (PO:0009009) or a seedling (PO:0000003).
More

epicuticular wax [PO:0025388; plant anatomy term ]
A portion of cuticular wax (PO:0025386) that forms crystalloids or a smooth film on the exterior of a plant cuticle (PO:0000022).
More

epidermal cell [PO:0004013; plant anatomy term ]
A native plant cell (PO:0025606) that is part of a portion of epidermis (PO:0005679).
More

epidermal cork cell [PO:0000041; plant anatomy term ]
One of the two types of short cells in the epidermis of grasses and bamboos. It is usually paired with silica cell.
More

epidermal initial cell [PO:0000349; plant anatomy term ]
An initial cell (PO:0004011) that is part of an epidermis (PO:0005679) and gives rise to specialized cell types of the epidermis.
More

epidermal pavement cell [PO:0000332; plant anatomy term ]
A shoot epidermal cell that is relatively unspecialized at maturity.
More

epidermal rhizoid [PO:0030071; plant anatomy term ]
A rhizoid (PO:0030078) that develops from an epidermal rhizoid initial cell (PO:0030068).
More

epidermal rhizoid initial cell [PO:0030068; plant anatomy term ]
An epidermal initial cell (PO:0000349) that gives rise to an epidermal rhizoid (PO:0030071).
More

epidermis [PO:0005679; plant anatomy term ]
A portion of plant tissue (PO:0009007) composed of epidermal cells (PO:0004013) that develops from the protoderm (PO:0006210) and covers the surface of a plant structure (PO:0009011).
More

epiphragm [PO:0030054; plant anatomy term ]
A portion of parenchyma tissue that forms a circular membrane extending from a spore capsule columella and attached to the ends of the peristome teeth that covers a spore capsule mouth.
More

epithem cell [PO:0000066; plant anatomy term ]
A parenchyma cell of the mesophyll of a hydathode found between the xylem endings and the epidermis.
More

exarch protoxylem [PO:0025554; plant anatomy term ]
A portion of protoxylem (PO:0000272) tissue in which the maturation of primary xylem (PO:0005849) progresses centripetally, the oldest elements (protoxylem) are farthest from the center of the plant axis (PO:0025004).
More

exocarp [PO:0009085; plant anatomy term ]
A portion of plant tissue (PO:0009007) that is the outer layer of a pericarp (PO:0009084).
More

exodermal passage cell [PO:0006207; plant anatomy term ]
A short cell in the dimorphic type of exodermis with cell wall that remains non-thickened.
More

exodermis [PO:0005772; plant anatomy term ]
The sub-epidermal layer or layers of cells of the root similar in structure and cytochemical characteristics of the endodermis, the outermost layer or layers of cells of the cortex.
More

exotegmen [PO:0006218; plant anatomy term ]
That part of the seed coat that develops from the outer surface of the inner integument.
More

exotesta [PO:0006050; plant anatomy term ]
That part of the seed coat that develops from the outer surface of the outer integument.
More

exothecium [PO:0030073; plant anatomy term ]
A portion of epidermis that is the outermost layer of a sporangium wall.
More

extrafloral nectary [PO:0009057; plant anatomy term ]
A multicellular glandular structure found in places other than flower secreting a liquid containing organic substances especially sugar.
More