where does tree pollen come from? and Ficinia nodosa inflorescence

where does tree pollen come from?

My friend and I are having an argument, he says trees can only produce pollen if they have flowers on them, i disagree.


inflorescence best answer:

Answer by gardengallivant
Cone bearing gymnosperm also produce pollen. The conifers (pine, cedar, yew) have small male pollen producing cones.
http://en.wikipedia.org/wiki/Conifer_cone

Not all angiosperm have obvious floral structures. Grasses release pollen as do the tassel-like male catkins in poplars or alder trees.
Male pollen releasing catkins on pussy willows.
http://www.microscopy-uk.org.uk/mag/indexmag.html?http://www.microscopy-uk.org.uk/mag/artsep07/bj-willow.html


Grass inflorescences 'flowers' have pollen producing anthers. This include the 50 foot tall bamboo species.
http://www.backyardnature.net/fl_grass.htm
http://www.inbar.int/Board.asp?BoardID=257

inflorescence

Ficinia nodosa inflorescence


Knobby club-rush (Isolepis nodosa aka Ficinia nodosa). Gerroa, NSW Australia, March 2009.

---

Orignal From: where does tree pollen come from? and Ficinia nodosa inflorescence