from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Having separate petals, as on the corolla of a rose or carnation.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. having a corolla composed of distinct, separable petals
from the GNU version of the Collaborative International Dictionary of English
- adj. Consisting of, or having, several or many separate petals.
from The Century Dictionary and Cyclopedia
- In botany, having two or more separate petals: as, a polypetalous corolla. Also apopetalous, dialypetalous, choripetalous. See cut under corolla.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. having a corolla composed of many separated or distinct petals
Sorry, no etymologies found.
= -- The instances of this are more frequent than in the case of the calyx, and admit of classification according as they occur in polypetalous or gamopetalous flowers, on the outer or inner surface of the petals, &c.
The absolute frequency of this occurrence seems to be greatest in those flowers which are normally polypetalous.
Flowers that, under ordinary circumstances, are gamopetalous, become, in some instances, multiplied by the formation of additional segments, just as in the case of polypetalous corollas; but in these cases the corollas become polypetalous, their petals do not cohere one with another.
= -- With reference to double flowers, it was remarked by Linné that polypetalous flowers were, as he said, multiplied, while monopetalous flowers were duplicated, or triplicated, as the case may be,  a statement that is true in the main, though it requires modification.
= Cohesion of the sepals = in a normally polypetalous calyx renders the latter gamosepalous, and is not of uncommon occurrence, to a partial extent, though rarely met with complete.
In the case of polypetalous, or rather dialypetalous flowers, the petals may be very largely increased by multiplication, as in roses, anemones, pinks, &c. In the last-named genus the number is often so much increased that the calyx splits from the tension exercised on it by the increasing mass within.
When the plants in which these occurrences happen most frequently are compared together, it may be seen that partial or entire suppression of the floral envelopes, calyx, and corolla, is far more commonly met with in the polypetalous and hypogynous groups than in the gamopetalous or epigynous series.
An instance of the polypetalous regular perianth of _Clematis viticella_ being changed into
The largest number of instances of this malformation, not merely generically, but also individually, occurs in plants the members of whose floral whorls are not united one to the other; thus, it is far more common in polypetalous plants than in gamopetalous ones.
In the last-named genus, _C. rotundifolia_ has been found with polypetalous flowers in a wild state in the mountains of Canton