TRIPLE HYBRID EVENING-PRIMROSE
Oenothera biennis × cambrica × glazioviana
Willowherb Family [Onagraceae] 
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Willowherb Family [Onagraceae]
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status
flower
morph
petals
stem
smell
fragrant
[SmallXbiennisXglaziovana]_2017_08_19_CrosbyDunes_LBS_238p7.jpg)
| 19th Aug 2017, dunes, Crosby Coastal Park, Sefton Coast. | Photo: © RWD |
A triple hybrid between Common Evening-Primrose (Oenothera biennis) , Small Evening-primrose(Oenothera cambrica) and Large-Flowered Evening-Primrose (Oenothera glazioviana). |
| 2nd Sept 2017, dunes, Crosby Coastal Park, Sefton Coast. | Photo: © RWD |
| There are still a few flower-buds to open at the top; the rest below on the spike have flowered and turned to fruit. Those stems with darkly coloured open fruits with white parts have already ripened. |
[SmallXbiennisXglaziovana]_2017_08_19_CrosbyDunes_LBS_237p1.jpg)
| 19th Aug 2017, dunes, Crosby Coastal Park, Sefton Coast. | Photo: © RWD |
| A mostly-spent flowering spike with stiff ripening fruits around the lower parts. Leaves not crinkly on the upper part. |
[SmallXbiennisXglaziovana]_2017_08_19_CrosbyDunes_LBS_237p6.jpg)
| 19th Aug 2017, dunes, Crosby Coastal Park, Sefton Coast. | Photo: © RWD |
| Un-opened flower-buds have faint pink stripes on the sepals enclosing them. The fruit capsules here have thinner red stripes (but not all do). |
| 2nd Sept 2017, dunes, Crosby Coastal Park, Sefton Coast. | Photo: © RWD |
| The sepals are reflexed downwards when the flower has opened, with the faint pink stripes now being on the inside. The white withered flower to the left is about to drop off with its long spent flower stalk to leave the fruit capsules with a slight hole at the top. |
[SmallXbiennisXglaziovana]_2017_08_19_CrosbyDunes_LBS_222p2.jpg)
| 19th Aug 2017, dunes, Crosby Coastal Park, Sefton Coast. | Photo: © RWD |
| In this triple hybrid the style is very much shorter than the stamens. This means that the plant is more likely not to fertilise itself, but rather other species of Evening-primrose plants in the vicinity, so it partakes in hybrid-swarm orgies too. |
[SmallXbiennisXglaziovana]_2017_08_19_CrosbyDunes_LBS_232p02.jpg)
| 19th Aug 2017, dunes, Crosby Coastal Park, Sefton Coast. | Photo: © RWD |
| The style is here green, and 4-pronged as they are in all Evening-primroses. |
| 19th Aug 2017, dunes, Crosby Coastal Park, Sefton Coast. | Photo: © RWD |
| But in this specimen the four prongs of the style are held together erect and half mingling with the anthers. Indeed, this specimen has yellow pollen spores from the anthers on the style and is therefore self-pollinating. |
[SmallXbiennisXglaziovana]_2017_08_19_CrosbyDunes_LBS_226p3.jpg)
| 19th Aug 2017, dunes, Crosby Coastal Park, Sefton Coast. | Photo: © RWD |
| The top of the stem on this specimen is very red and it also has a few red and glandular hairs, but not as many as have the green parts of the fruit capsules. |
[SmallXbiennisXglaziovana]_2017_08_19_CrosbyDunes_LBS_231p7.jpg)
| 19th Aug 2017, dunes, Crosby Coastal Park, Sefton Coast. | Photo: © RWD |
| Hairs with bulbous red glands on both red and green parts of the stem, less bulbous on the more mature fruit capsules. |
[SmallXbiennisXglaziovana]_2017_08_19_CrosbyDunes_LBS_230p5.jpg)
| 19th Aug 2017, dunes, Crosby Coastal Park, Sefton Coast. | Photo: © RWD |
| Red bulbous based hairs on the fruit capsules and stems. |
[SmallXbiennisXglaziovana]_2017_08_19_CrosbyDunes_LBS_230p09.jpg)
| 19th Aug 2017, dunes, Crosby Coastal Park, Sefton Coast. | Photo: © RWD |
| The red bases of hairs are larger in any red areas of the fruit capsules. (Capsules lower down have fewer glandular hairs). |
[SmallXbiennisXglaziovana]_2017_08_19_CrosbyDunes_LBS_228p4.jpg)
| 19th Aug 2017, dunes, Crosby Coastal Park, Sefton Coast. | Photo: © RWD |
| Pale pink stripes on the flower-buds, the red areas of which sometimes have hairs with red bulbous bases. |
| 2nd Sept 2017, dunes, Crosby Coastal Park, Sefton Coast. | Photo: © RWD |
| Lower leaves are crinkly. |
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Easily confused with : other Not to be semantically confused with : Fragrant Agrimony (Agrimonia procera) or with any of the Fragrant Orchids (Gymnadenia species) [plants with similar names belonging to differing families] Triple Hybrid Evening-primrose is a triple hybrid between: Small-Flowered Evening-Primrose (Oenothera cambrica), Common Evening-Primrose (Oenothera biennis) and Large-Flowered Evening-Primrose (Oenothera glazioviana),
Hybridizes in a (unique to the UK) way with : Evening-Primrose (Small-Flowered) (Oenothera cambrica), Evening-Primrose (Intermediate) (Oenothera × fallax), Evening-Primrose (Common) (Oenothera biennis) and with any of their hybrids or itself to produce a ' The identifying features to look out for in this species, Oenothera glazioviana are:
It grows on sand-dunes near the coast.
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 Oenothera
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biennis x cambrica x glazioviana
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⇐ Global Aspect ⇒ |
Onagraceae
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 Oenothera (Evening-Primroses) |
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Willowherb Family [Onagraceae]
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BSBI maps