Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: May 8, 2025
In this latter case we have a pollinium in its most highly developed and perfect condition.
As I have fully treated this subject in another work, I will here give only a few details on one alone of the most striking peculiarities of the flowers of orchids, namely, their pollinia. A pollinium, when highly developed, consists of a mass of pollen-grains, affixed to an elastic foot-stalk or caudicle, and this to a little mass of extremely viscid matter.
He who will carefully examine the flowers of orchids for himself will not deny the existence of the above series of gradations from a mass of pollen-grains merely tied together by threads, with the stigma differing but little from that of the ordinary flowers, to a highly complex pollinium, admirably adapted for transportal by insects; nor will he deny that all the gradations in the several species are admirably adapted in relation to the general structure of each flower for its fertilisation by different insects.
Word Of The Day
Others Looking