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Webster 1913 Edition

Adj.

[

Plani-

petal

(Bot.)

Having flat petals.

Adj.

[L. planus, plain, and Gr. a petal.]

In botany, flat-leafed, as when the small flowers are hollow only at the bottom, but flat upwards, as in dandelion and succory.

planipetalous ‎(comparative more planipetalous, superlative most planipetalous)

having flat petals