Van Mons is supposed to have originated this variety about 1800 as diel mentioned it among his best pears in 1812.
The Marmalade Pippin of diel which is described in the 22 vol.
The diel activity cycle likewise depends upon temperatures but is influenced by other factors as well.
According to diel this variety originated in the environs of Halle, Prussia.
diel erred in applying the synonymes of Knoops Pigeon bigarr to this variety, which is very distinct from the Pigeonnet.
diel, first to describe it, placed its origin at about 1806.
Since optimal temperatures determine activity, the diel cycle varies greatly from time to time.
Origin unknown; diel states he had received it from Strasland, Prussia.
diel stated that he received this variety from the neighborhood of Dietz in the Duchy of Nassau without any account of its origin.
This is practically identical with the pear found by diel and described by him in 1806 under the name Rothbackige Citronatbirne.