ovule |
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STRUCTURE |
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A complex reproductive structure borne by a seed-plant sporophyte, consisting of outer, sporophytic tissues that enclose a haploid, gametogenic tissue usually regarded as a highly reduced megagametophyte. Following fertilization, the entire structure matures to become a seed that contains an embryo, the first stage of the next sporophytic generation. Ovules (and seeds) are borne naked on megasporophylls (in Pinophyta) or within an ovary (in Magnoliophyta). |
enlarged |
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size |
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Unusually or unexpectedly large. |
clustered 1 |
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arrangement |
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Disposed in one or more aggregates, the members of each inserted close together, thence widely divergent from one another. |
trigamous |
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reproduction |
inflorescence |
Bearing flowers of three differing sexual constitutions; esp. in Asteraceae (Compositae). |
circular |
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arrangement |
bundle scars |
Forming a circle. |
contiguous |
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arrangement |
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Touching one another. |
pilosulous |
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pubescence |
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Finely pilose. |
fistulose |
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solid shape |
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Basically tubular with closed ends. |
perigynous |
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insertion |
perianth, calyx, corolla, androecium |
Having its proximal portion adnate to part of the length of the gynoecium, or fused in a separate floral cup that extends part of the length of the gynoecium, the free distal portion thus arising at a level between the base and apex of the gynoecium. See also epigynous, hypogynous. |
polygamomonoecious |
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reproduction |
taxon |
Basically monoecious but with some or all plants bearing some bisexual flowers. |
valvate 1 |
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aestivation |
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Whorled and with members not overlapping, adjacent members laterally contiguous at their margins. |
planoconvex |
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solid shape |
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Relatively thin with opposite broad faces, one plane and one convex. |
xerocleistogamous |
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reproduction |
flower |
Normally chasmogamous but facultatively cleistogamous during drier than normal periods. |
floret |
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STRUCTURE |
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A very small, structurally specialized flower, especially when occurring in capitulum (head; Asteraceae), or in a spikelet (Poaceae), where it includes the immediately subtending bracts (lemma and palea). |
pterocaulous |
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architecture |
plant |
Having alate (winged) stems. |
weak |
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texture |
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Very pliable and unresilient. |
prominence |
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CHARACTER |
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Elevation or depression of a discrete feature relative to the surrounding surface. |
rounded |
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apex |
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Convex overall and more or less regularly curved. |
antipetalous |
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position |
equivalent floral structures |
Each inserted directly above or below a petal. In place of this term, the phrase "opposite the petals" is often used, but that contradicts the sense of opposite as otherwise employed (arrangement of lateral structures along an axis) and should be avoided. |
scorpioid-cymose |
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architecture |
inflorescence |
Comprising one or more scorpioid cymes. See also cincinnate, helicoid-cymose. |
sawtoothlet |
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STRUCTURE |
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A diminutive sawtooth. See also scallop (crena), scalloplet (crenule), tooth (dens), toothlet. |
inferior 2 |
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position |
ovary |
Wholly enclosed by a floral tube casing, the distal portions of the perianth and/or androecium thus arising from its apex. |
arcuate 2 |
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plane shape |
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Elongate and more or less regularly curved from one end to the other, one side convex, the opposite concave. |
semielliptic |
|
arrangement |
bundle scars |
Forming an incomplete ellipsis, like the letter U. |
spadicate |
|
architecture |
inflorescence |
Generally spicate but with the flowers embedded in a thick, fleshy axis, the whole subtended and usually partially or wholly enveloped by a large bract (spathe). |