spiral

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Definition

Glossary of Plant Systematics (1st ed.) by Simpson (2006)

  • (a) Alternate, with points of attachment in more than three rows/ranks. Syn: polystichous. (arrangement) (b) Perianth parts arranged in a spiral, one per node, not in distinct whorls. (perianth arrangement) (c) Stamens arranged in a spiral, one per node; not whorled. (stamen arrangement) (c) A type of endothecium in which the secondary wall thickenings are spiral or helical in shape.

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広島大学 / デジタル自然史博物館 / 植物 / アルファベット順 / S | 仮名順 にもどる