pappus

[planteome-user]

A ring of fine hairs or scales that appear as a low crown in the segments of the calyx

Reported by: slt1997

Original Ticket: obo/plant-ontology-po-term-requests/406

[planteome-user]

Spreadsheet

Original comment by: slt1997

[planteome-user]

I suggest we add this term, since it is also on the list of terms to add from the Flora of North America.
From FNA glossary: A set of one or more awns (aristae, bristles, setae) or scales at the summit of an inferior ovary just beneath or outside the free portion of the corolla; persisting in the fruit (cypsela) and often aiding wind or animal dispersal; in Asteraceae (Compositae). Considered by some to be an evolutionarily modified upper calyx portion, the lower portion having been incorporated into the floral tube casing adnate to the ovary wall; considered by others to be an outgrowth from the ovary wall.

From Harris and Harris: The modified calyx of the Asteraceae, consisting of awns, scales, or bristles at the apex of the achene.

FNA also has a term for "pappus scale": A pappus element that is more or less planate and relatively thin and broad; may terminate in one or more awn- or bristle-like appendages. I suggest we add a term for pappus element, with pappus scale, pappus awn, and pappus bristle as narrow synonyms.

Original comment by: rlwalls2008

[planteome-user]

At the POC meeting on 1-17-12, we agreed to add the terms pappus and pappus elements.

pappus (PO:0025393): A collective organ part structure that has a parts one or more pappus elements (scales, awns, or bristles) at the apex of an inferior ovary just beneath or outside the corolla.
Comment: Found in flowers and fruits (cypsela) of the Asteraceae. May aid in dispersal by wind or animals. Considered by some to be an evolutionarily modified upper calyx portion, the lower portion having been incorporated into the floral tube casing adnate to the ovary wall; considered by others to be an outgrowth from the ovary wall.

pappus element (PO:0025394): A cardinal organ part that is a segment of a pappus.
Comment: May be awn-, scale-, or bristle-shaped.
Synonyms: pappus scale, pappus awn, pappus bristle; part_of pappus

Refs.: ISBN:0964022168 and FNA:glossary

Original comment by: rlwalls2008

[planteome-user]

• priority: 5 --> 1
• assigned_to: nobody --> rwalls
• status: open --> closed-accepted

Original comment by: rlwalls2008