Eastern Mojave Vegetation
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Eastern Mojave Vegetation
| Age of Frasera albomarginata at Flowering |
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If you have a question or a comment about this photograph you may write to me at: tomas@schweich.com I sometimes post interesting questions in my FAQ, but I never disclose your full name or address. |
My data set contains data about 276 individual plants that have been observed between 30 April 1996 and 7 June 2006. A chart of the ages of plants when they flowered and set seed is shown above. On 7 June 2006, 42 of the 134 plants shown as "3 - Still Growing" were in some stage of forming buds, flowering, or setting seed. Therefore, category "3 - Still Growing" is clearly overstated. This chart shows that F. albomarginata can be a biennial as seven plants flowered in the second season following germination and establishment. Three plants flowered in the third season. The remaining 15 plants that flowered were 4 or more years in age. The reason I say 4 years or more is that these plants were established rosettes in my experimental plots when the plots were established. I don't really know how old they are. I think, though, that it is reasonable to assume that these plants were established after the heavy bloom of 1993. Therefore, a preliminary conclusion is that the species is a biennial at a minumum, probably grows two to seven years before flowering, but that the age of flowering is probably influenced mainly by precipitation.
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Other photos about Frasera albomarginata or Age at Flowering.
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Date and time this page was prepared: 12/8/2024 2:13:30 PM |