Orchids |
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ORCHIDS: Description
They are monocotyledons, the flowers have three sepals, two of which may combine to form a large dorsal sepal as in paphiopedilums, and three petals, two of which are alike and one modified into a labellum or a pouch; the really unique feature is fleshy column bearing the reproductive organs; most anthers are reduced to one which is fused into the structure with one stigma; pollen grains are fused to form platelets called pollinia. A65-438
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ORCHIDS: Largest
It is GrammatophyHum wallissii and the clone 'Burnham' is listed as such in Guiness Book of records. AU85(4)-38 relationship with insects = in addition to aspects of pollination, there are other symbiotic ties as in the quest for food; pseudo-copulation; antagonistic imitation (for instance, mistaken for rival bees) mimicry; symbiosis, especially with ants. Ca81(3)- 14
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ORCHIDS: Leafless, Listed
For the names and some cultural remarks, refer to Orquideoiogia (Colombia) 1982, 227
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ORCHIDS: Starting Your Own Hybrids
Start with a plan, learn the mechanics of pollenization, remov ing the pod, flasking, etc., all briefly noted. OD87-61
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ORCHIDS: Symbiosis with Fungi
They exchange vitamins and parts of their molecules; seeds release para-aminobenzoic acid and thiamine, at least the thiazole moiety, providing vitamins to the fungi; Rhizoctona fungus releases niacin (nicotinic acid) and may also provide pyramidine half of thiamine, which orchids cannot make themselves but seem to benefit from. OR74-342
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ORCHIDS: What They Are and What They Do
An overview of the family with all their many remarkable features highlighted in the inimitable Dunsterville style. A86-604
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