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Isoetes melanopoda subsp. silvatica D. F. Brunt. & D. M. Britton

leaf arrangement

Kubitzki et al
spiral
URI：http://purl.obolibrary.org/obo/PATO_0000404

定義： A shape quality inhering in a bearer by virtue of the bearer's being curled or wound (especially in concentric rings or spirals).

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spore arrangement

Kubitzki et al
monolete
URI：http://eol.org/schema/terms/monolete

定義： spores bearing a single linear scar, indicating that they were arranged in a tetragonal spore tetrad

姓名標示：https://www.ucl.ac.uk/GeolSci/micropal/spore.html

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Kubitzki et al
trilete
URI：http://eol.org/schema/terms/trilete

定義： spores bearing a Y shaped scar, indicating that they were arranged in a tetrahedral spore tetrad

姓名標示：https://www.ucl.ac.uk/GeolSci/micropal/spore.html

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