Wednesday, February 1, 2012

Discrition about pollen and mail cone of cupressaceae?

i need this detail for assignment. so please if any one answer quickly

Discrition about pollen and mail cone of cupressaceae?
The following web site has a good description of the Cupressaceae Pinophyta (Gymnosperms): Pinophytina. The Cupressaceae are monoecious or dioecious trees or shrubs comprising about 18 genera and 140 species. The leaves are usually scalelike, and are opposite and decussate, or whorled. The male or microsporangiate strobili are small and inconspicuous, axillary or terminal, usually comprising only a few microsporophylls, each with 3-6 or more microsporangia. The pollen grains lack wings. The female or megasporangiate strobili are small, with 1-12 ovuliferous scales, each fused with its bract and bearing 2-12 ovules. The scales may be flat and imbricate, peltate, or connate. The female cone is woody or sometimes fleshy and berrylike.

The site is http://www.botany.hawaii.edu/FACULTY/CAR...

Pollen reaches the ovules in female cones by wind pollination.

Cheers!

Doc. Dan.


  • make up techniques
  • No comments:

    Post a Comment