Sentence Examples with the word Polythalamous

The polythalamous gall of Aphilothrix radicis, found on the roots of old oak-trees, may attain the size of a man's fist; the galls of another Cynipid, Andricus occultus, Tschek, 6 which occurs on the male flowers of Quercus sessiliflora, is 2 millimetres, or barely a line, in length.