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| | A Checklist of the Vascular Plant Families |
 | | Some authors list 18,000 species, but probably there are only 12,000. |
 | | 3-4 genera, 435 species, diverse and numerous in arctic with up to 20 species per acre, many species are circumboreal, holarctic to tropics |
 | | 1000 genera, 15-20-30,000 species, tiny seeds, easily wind or bird disseminated, but if appropriate pollenating organism isn't in the new habitat it can't reproduce, intergeneric hybrids are a regular occurence, species may be "behaviorally" isolated but are not genetically isolated, endotrophic microrhysae, the most successful monocot group |
| www.interaktv.com /BOTANY/Plantchlist.html (1751 words) |
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