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"Cereus-validus..." wrote in
om: "Iris Cohen" wrote in message ... Don't non-flowering plants count? BRBR Don't be silly. The spermatophytes or Magnoliophyta are generally referred to as the "higher plants" colloquially, just as the vertebrates are referred to as the higher animals. It is not a value judgement. All I meant was that you would not find seed-bearing epiphytes in the Pacific Northwest because the climate is too cold. Iris, Central NY, Zone 5a, Sunset Zone 40 "A tree never hits an automobile except in self defense." - Woody Allen "All I meant was that you would not find seed-bearing epiphytes in the Pacific Northwest because the climate is too cold." I would disagree with that assertion. Its is more likely that few if any epiphytic flowering plants are found in the Pacific Northwest because of the lack of potential progenitors in the region. So with all the variety of epiphytic genera, families, orders, etc. in the tropics, many of which must at some time had not had any progenitors of the habit, and considering all the tropical islands and continents with epiphytic taxa, you claim that it is a problem with progenitors instead of some other factor. There is quite a lot of variety within the temperate rain forest, but still a lack of epiphytes. There are plenty of plants in the same families or genera that produce tropical epiphytes there, for example Orchids, or Gingers. The Hawaiian islands managed to produce a variety of epiphytes, and they certainly started out with no progenitors of anything. Sean |
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