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Eriogonum incanum
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Photographer: Aaron Schusteff
ID: 0000 0000 1208 2887 (2008-12-25)Copyright © 2008 Aaron Schusteff
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INFORMATION PROVIDED WITH THE PHOTO
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date of photo Jul 27, 2006
location
Near Tomahawk Lake, Humphries Basin, Sierra National Forest (Fresno County, California, US)family
Polygonaceae
notes Inflorescence of a pistillate (female) plant of Eriogonum incanum. The (fertile) ovaries here are topped by 3 mildly diverging styles, each tipped with a tiny ball-like stigma. These are labeled by an 's' for a number of flowers in the image (the flower at lowest left in the image most clearly shows the fertile pistil, styles, and stigmas). For the flower at the lower center of the image, the infertile (pollen-less) anthers are labeled in groups of three by a small 'a'. The vast majority of Eriogonum species are synoecious, meaning that each of the flowers of a typical plant have both fertile stamens and fertile pistils. The typical Eriogonum flower has 9 functional stamens and a single functional pistil with 3 styles topped by small ball-like stigmas. However E. incanum is one of three unusual species in the genus in that it is dioecious---meaning it has staminate (male) flowers and pistillate (female) flowers residing on separate plants. Dioecy is manifested here by pistillate plants having flowers with vestigial (infertile) anthers.camera Shot on a Canon Digital Rebel XT at f14, 1/125, ISO 200, using a Canon 50mm Compact macro lens.
photo category: Plant - annual/perennial
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MORE INFORMATION ABOUT THIS PLANT
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| Look for Jepson Manual treatments, maps (University & Jepson Herbaria)View Calflora record for Eriogonum incanumView all photos in CalPhotos of Eriogonum incanum Check Google Images for Eriogonum incanum |
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The photographer's identification Eriogonum incanum has not been reviewed. Click here to review or comment on the identification. |
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Using this photo The thumbnail photo (128x192 pixels) on this page may be freely used for personal or academic purposes without prior permission under the Fair Use provisions of US copyright law as long as the photo is clearly credited with © 2008 Aaron Schusteff.
For other uses, or if you have questions, contact Aaron Schusteff arbonius2[AT]sbcglobal.net. (Replace the [AT] with the @ symbol before sending an email.) |
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