Details of Changes to Release 20

Go back to main page: Release_20

Includes all revisions from 1761 and on.

New terms

• multicellular trichome tip (PO:0025535): comment:

• plant cuticle ridge (PO:0025536): A portion of plant cuticle (PO:000022) that forms a ridge, may be overlayed with epicuticular wax (PO:0025388). Comment: The plant cuticle ridges are mainly cutin (PO:0025385).

• adventitious shoot axis PO:0025534: A shoot axis (PO:00025029) that develops in an unusual place. develops from a bud (narrow synonym adventitious bud )

• plant sap (new PO:00255380): A portion of plant substance (PO:0025161) that is an aqueous solution which may contain sugars, hormones, mineral elements and/or other nutrients. Comment: plant sap should not be confused with latex or resins.

• xylem sap (new PO:0025539): A plant sap (PO:0025538) that is an aqueous solution which may contain mineral elements, nutrients, and plant hormones, and is transported from the root system (PO:0025025) toward the leaves through the tracheary elements (PO:0000290) of the xylem. Comment: Transport of sap in xylem is characterized by movement from the roots toward the leaves.

• phloem sap (new PO:0025539): A plant sap (new PO:0025538) that is an aqueous solution which may contain sugars, mineral elements, and plant hormones, and is transported through the phloem sieve elements (PO:0025406).

• bundle sheath cell (PO:0025541): A ground tissue cell (PO:0000076) that is part of a bundle sheath (PO:0006023). part_of bundle sheath

• bundle sheath chlorenchyma cell (PO:0025542): A chlorenchyma cell (PO:0000076) that is part of a bundle sheath (PO:0006023).

• tapetum cell (PO:0025543): A plant cell (PO:0009002) that is part of the tapetum (PO:0025313). exact synonym: tapetal cell. comment: The tapetum is the inner-most layer of a sporangium wall (PO:0025306).

• microsporangium tapetum cell (PO:0025544): A tapetum cell (PO:0025543) that is part of a microsporangium tapetum (PO:0025314). part_of a microsporangium tapetum; exact synonym: tapetal cell

• anther wall tapetum cell (PO:0025545): A microsporangium tapetum cell (PO:0025544) that is part of the anther wall tapetum (PO:0009071). part_of the anther wall tapetum; exact synonym: anther wall tapetal cell

• accessory paraclade (PO:0025546): A primary inflorescence branch (PO:0009081) borne in same axil as an exisiting primary inflorescence branch (PO:0009081).

• cauline paraclade (PO:0025547): An inflorescence branch (PO:0009081) borne on the elongated first order inflorescence axis (PO:0025104).

• rosette paraclade (PO:0025548): An inflorescence branch (PO:0009081) borne on the compacted first order inflorescence axis (PO:0025104), forming the rosette.

Obsolete terms

paraclade was merged into primary inflorescence branch