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Polyad vs Acalymmate - What's the difference?

polyad | acalymmate |

As a noun polyad

is a group consisting of an indeterminate number of things or people.

As an adjective acalymmate is

(palynology) forming clusters of pollen grains (usually tetrads or polyads) in which the sexines of the respective grains do not merge to form a continuous sheath.

polyad

English

Noun

(wikipedia polyad) (en noun)
  • A group consisting of an indeterminate number of things or people.
  • See also

    * monad * dyad * triad * tetrad * pentad * hexad * heptad * octad * nonad * decad * See also

    acalymmate

    English

    Adjective

    (-)
  • (palynology) Forming clusters of pollen grains (usually tetrads or polyads) in which the sexines of the respective grains do not merge to form a continuous sheath.
  • * {{quote-journal, 1996, John V. Freudenstein & Finn N. Rasmussen, Sectile Pollinia and Relationships in the Orchideaceae, Plant Systematics and Evolution, pages=125-146, volume=205, doi=10.1007/BF01464400
  • , passage=When loosely associated, each tetrad retains most of its outer exine layer, leading to calymmate tetrads, but an acalymmate massula (since the exine is not continuous around each massula