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Section A. Structure and Specialized Characters:
X. Gynoecium
[A. Gynoecial Parts] [B. Gynoecial Types] [C. Carpel Parts] [D. Carpel Types] [E. Stigma Types] [F. Style Types] [G. Ovule Parts] [H. Ovule Types]
- Carpel. Female sporophyll within flower; floral organ that bears ovules in angiosperms.
- Carpopodium. Short, thick, pistillate stalk.
- Locule. Ovary cavity.
- Ovary. Ovule-bearing part of pistil.
- Placenta. Ovule-bearing region of ovary wall.
- Stigma. Pollen-receptive portion of pistil.
- Stipe. Pistillate stalk.
- Style. Attenuated, non-ovule-bearing portion of pistil between stigma and ovary.
- Apocarpous. With carpels separate.
- Semicarpous. With ovaries of adjacent carpels partly fused, stigmas and styles separate.
- Syncarpous. With stigmas, styles, and ovaries completely fused.
- Synovarious. With ovaries of adjacent carpels completely fused, styles and stigmas separate.
- Synstylovarious. With ovaries and styles of adJacent carpels completely fused, stigmas separate.
- Unicarpellous or Stylodious. With solitary, free carpel in gynoecium
- Funiculus. Stalk by which ovule is attached to placenta.
- Locule. Ovary cavity.
- Ovary. Ovule-bearing part of carpel in simple ovary.
- Ovule. Embryonic seed consisting of integument(s) and nucellus.
- Placenta. Ovule-bearing region of ovary wall.
- Stigma. Pollen receptive portion of carpel.
- Stipe, Podogyne, Carpopodium. Basal stalk.
- Style. Attenuated portion of carpel between stigma and ovary.
D. Carpel Types (Figure 6-8-3)
Classification based on presence or absence of style and stipe)
- Astylocarpellous. Without a style and a stipe.
- Astylocarpepodic. Without a style, with a stipe.
- Stylocarpepodic. With a style and stipe.
- Stylocarpellous. With a style and without a stipe, the normal carpel.
- Capitate. Head-like.
- Clavate. Club-shaped.
- Crested or Cristate. With a terminal ridge or tuft.
- Decurrent. Elongate, extending downward.
- Diffuse. Spread over a wide surface.
- Discoid. Disc-like.
- Fimbriate. Fringed.
- Lineate. In lines, stigmatic surface linear.
- Lobed. Divided into lobes.
- Plumose. Feather-like.
- Terete. Cylindrical and elongate.
- Astylous. Style absent.
- Conduplicate. Folded with a longitudinal groove.
- Cristate. Crested.
- Eccentric. Off-center style.
- Fimbriate. Fringed.
- Flabellate. Fan-shaped.
- Geniculate. Bent abruptly.
- Gynobasic. Attached at base of ovary in central depression.
- Heterostylous. With styles of different sizes or lengths or shapes within a species.
- Homostylous. With styles of same sizes or lengths and shapes.
- Involute. With margins infolded longitudinally, with groove present.
- Petaloid. Petal-like.
- Stylopodic. With a stylopodium or discoid base, as in the Apiaceae.
- Terete. Cylindrical and elongate.
- Tuberculate. With hard, swollen, persistent base or tubercle.
- Umbraculate. Umbrella-shaped, as in Sarracenia.
- Chalaza. End of ovule opposite micropyle.
- Embryo Sac. Female gametophyte.
- Integuments. Outer covering of ovule; embryonic seed coat.
- Micropyle. Hole through integument(s).
- Nucellus. Female sporangium within ovule; megasporangium in seed plants.
- Raphe. Longitudinal ridge on outer integument.
H. Ovule Types (Figure 6-8-3)
(Classification based on orientation of ovule body in relation to the funiculus and micropyle)
- Amphitropous. With body bent or curved on both sides so that the micropyle is near the medially attached funiculus.
- Anatropous. With body completely inverted so that funiculus is attached basally near adjoining micropyle area.
- Campylotropous. With body bent or curved on one side so that micropyle is near medially attached funiculus.
- Hemianatropous or Hemitropous. With body half-inverted so that funiculus is attached near middle with micropyle terminal and at right angles.
- Orthotropous or Atropous. With straight body so that funicular attachment is at one end and micropyle at other.
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