POC Conf. Call 4-20-10

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POC meeting, Webex Conference Call; Date: April 20th, 2010 10am (PDT)

Agenda:

Acceptance of the minutes from last weeks meeting? All in favor?


1. Wrapping up the 'whorls':


A. whorled phyllome structure:(See SF Tracker: whorl phyllome structure)

Proposed new def'n:: A collective plant structure that contains one or more whorled arrangements of phyllomes.

Children are androecium, calyx, corolla, epicalyx, gynoecium, leaf whorl, perianth and whorled tepal structure.


Note: Whorls that have been reduced to a single organ will be placed under 'plant organ'.


b. New term: whorled tepal structure: (See SF Tracker whorled tepal structure)

proposed new def'n: 'whorled tepal structure': A whorled phyllome structure that is composed of two or more tepals

There was some discussion about whether or not this term should be a child of perianth.


c. tepal (See SF Tracker: tepal)

proposed def'n: A phyllome that is part of a perianth in which all parts are similar in appearance.



Item carried over from last week's agenda:


2. fruit (See SF Tracker: fruit)

Is a fruit an organ?

Current def'n: The seed-bearing structure in angiosperms, formed from the ovary after flowering.


proposed change: fruit is_a 'collective plant structure' and part_of infructescence. (CPS: a proper part of a plant and is composed of two or more organs and any associated portions of plant tissue).


3. Embryo (See SF Tracker: embryo) Def'n: A young sporophyte contained within a seed. [source: APWeb:Glossary, GR:pj]

-has no is_a parent, propose making it is_a whole plant?


1. stem (See SF Tracker stem)

Stem def'n: The axial system of plants that bears leaves and buds. [source: APWeb:Glossary]

Synonyms: cane, culm, stalk, trunk

Problem: Stem has no is_a parent- should be a collective plant structure?

OR if we make it a child of plant organ, then penduncle, pedicel and gynophore can be stalks.


2. stalk (See SF Tracker: stalk)

This was added as a new term at the Ithaca meeting on 12/2009, to cover a number of the terms lacking is_a parents.

def'n: An 
elongated, sub-cylindrical to cylindrical structure that supports another 
organ or regional part of an organ.

Proposed def'n: A cardinal organ part that is elongated and
 sub-cylindrical to cylindrical and supports an 
organ or another cardinal organ part.

-made a cardinal organ part (as per its definition) rather than an organ.

Proposed children of stalk: (Test: do all of these fit the definition?)

  • filament: The stalk of a stamen.(stamen:organ)
  • petiole: The stalk of a leaf. (leaf:organ)
  • petiolule: The stalk of a leaflet (leaflet:cardinal organ part)
  • funicle: The stalk which attaches the ovule to the
 placenta.(ovule: cardinal organ part)
  • gynophore: The stalk at the base of the ovary.

(ovary: cardinal organ part)
  • leaf rachis: That part of the main axis of a pinnate or more highly compound leaf, that bears leaflets or divisions of the axis.(leaf:organ) (See SF Tracker: leaf rachis)
  • peduncle: The stalk of an inflorescence; that part of
 the inflorescence below the first flower or inflorescence branch and above 
the last foliage leaf/pair of foliage leaves. (See SF Tracker: peduncle)

propose revised def'n: The stalk of an inflorescence or an individual flower (R, E, E 4th edition).

  • pedicel: Basal part of the ultimate branch of the inflorescence. [source: APWeb:Glossary]

(See SF Tracker: pedicel)

propose revised def'n: The stalk of an individual flower in an inflorescence that contains more than one flower (LC revised from R,E,E4th edition).

Note: We also have the term 'stem'. We need to decide if 'peduncle' and 'pedicel' fit better as stalk or stem.

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