Annual Forbs Around Las Vegas, Vegetation Around Las Vegas
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General: Desert Evening Primrose (Oenothera primiveris) is an annual forb that grows in dry, sandy soils as a clump of highly notched leaves (rarely entire leaves) on the ground, then puts up big, yellow flowers. The flower buds grow upright, and the sepals are short (12–25 mm) relative to other yellow-flowered Oenothera species. Desert Evening Primrose is a fairly common component of vegetation communities in dry, well-drained sandy and gravelly areas on desert flats and lower bajadas into the lower mountains in the Lower Sonoran (Creosote-Bursage Flats) and Upper Sonoran (Mojave Desert Scrub) life zones. Family: Evening Primrose (Onagraceae) |
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 Flowers yellow, 13–35 mm long |
 Flowers yellow, 13–35 mm long |
 Stigma exserted beyond anthers |
 Sepals relatively short (12–25 mm) |
 Capsules cylindrical, 4–8 mm diameter, and without wings |
 More to come ... |
 Apparently, this species does not always have lobed leaves |
 Apparently, this species does not always have lobed leaves |
 Apparently, this species does not always have lobed leaves |
 Apparently, this species does not always have lobed leaves |
 Apparently, this species does not always have lobed leaves |
 Apparently, this species does not always have lobed leaves |
Note: All distances, elevations, and other facts are approximate. Names generally follow the USDA database.
; Last updated 220728
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