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The primrose moth (Schinia florida) is a common consumer of Oenothera biennis. The adults lay eggs on the flower, and the emerging caterpillars feed on the plant. Pink wing tips reveal Schinia florida in the flower of the evening primrose. Primrose moth, Schinia florida, on an evening primrose, petals have been removed to reveal the insect.
Oenothera caespitosa at dusk, Convict Lake, Mono County CA. Oenothera caespitosa, known commonly as tufted evening primrose, desert evening primrose, rock-rose evening primrose, or fragrant evening primrose, is a perennial plant of the genus Oenothera native to much of western and central North America, in habitats such as talus slopes and sandy plains. [1]
Oenothera triloba, with common names stemless evening primrose and sessile evening primrose [1] is a flowering plant in the primrose family. It is native to North America, where it is primarily found in northern Mexico and in the south-central United States. [2] It is found in dry, open areas such as glades, prairies, and sometimes even lawns.
Oenothera speciosa is a herbaceous perennial wildflower.It has glabrous (smooth) to pubescent stems that grow to 50 centimetres (20 inches) in height. The pubescent leaves are alternate with very short or no petiole (sessile), reaching 10 cm (4 in) long to 4 cm (1 + 1 ⁄ 2 in) broad.
The main phytochemical in this evening primrose seed oil is gamma-linolenic acid. [21] There is no high-quality scientific evidence that O. biennis or evening primrose oil has any effect on human diseases or promotion of health, [21] [22] and specifically no evidence that it is effective to treat atopic dermatitis or cancer.
Oenothera fruticosa, the narrowleaf evening primrose [1] or narrow-leaved sundrops, is a species of flowering plant in the evening primrose family. It is native to much of eastern North America, [ 2 ] where it is found in a variety of open habitats, including dry woodlands, rock outcrops and moist savannas.