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Eriogonum incanum
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Photographer: Aaron Schusteff
ID: 0000 0000 1208 2877 (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 The CalFlora database lists 112 species of Eriogonum in California (there's a much larger number of taxa if one also counts all the varieties). Of all these Eriogonum species, only three are dioecious: E. incanum, E. marifolium, and E. diclinum. This dioecious trait is mentioned in many identification keys and can lead to confusion for a novice who might naively expect pistillate flowers to lack stamens, and/or staminate flowers to lack pistils. Those parts are not necessarily absent in these three species, rather they have lost their functionality and become vestigial during the process of speciation from their synoecious eriogonoid progenitors. Thus dioecy is manifested here by pistillate plants having flowers with vestigial (infertile) anthers, and by staminate plants having flowers with vestigial (infertile) ovaries. For more detailed images, with labels indicating vestigial and fertile parts, see pistillate inflorescence here, and staminate inflorescence here.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. Sign in to review or comment on this photo |
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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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