Yellow Evening Primrose (4)
All the yellow evening primroses shown here have large, showy flowers with four sepals, four petals, eight stamens and a stigma divided into four parts. They open late in the day and close the next morning, withering and turning orange. Growth habit and hairiness differentiates the species.
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Hooker's Evening Primrose Family:
Evening Primrose (Onagreaceae) Plant grows from 16" to 100" tall, usually 18" to 36" in this area, with multiple stems from the base. Flowers are up to 3" across. Flower tubes up to 2" long. Leaves are grayish-green. |
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Yellow Evening Primrose Family:
Evening Primrose (Onagreaceae) Low growing plant with no stem only a 1" to 6" flower tube. Leaves are long and narrow with wavy edges. Flowers are up to 2" across. |
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Longstem Evening Primrose Family:
Evening Primrose (Onagreaceae) Can grow to 9 feet tall in the right conditions with a single, stout, reddish stem. This plant was about 6 feet tall. Leaves are long and willow-like with slightly wavy edges. The flowers are large and showy with a very long flower tube, 4" to 6", which distinguishes it from O. elata and O. villosa. O. elata also is branched and does not grow as tall as O. longissima. O. villosa has more hairs. |
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Hairy Evening Primrose Family:
Evening Primrose (Onagreaceae) Grows to 6 feet tall with a single reddish stem or branches from the base and willow-like leaves. This plant was at least 6 feet tall with a single stem. Stems have long, spreading hairs, usually with tiny red, blisters at their bases. Buds and leaves also have short hairs. The flowers are large and have a 2" flower tube. |