Seeds of Cardiocrinum giganteum
Bildnummer 11698419
| Seeds of the Giant Himalayan lily,Cardiocrinum giganteum. The picture shows mature seeds that have been shed from a dry capsule. Each is roughly triangular in shape,and consists of a central region,enclosed by a thin membraneous layer that extends beyond the living tissues and acts as a wing to aid dispersal of the seed by wind. The central region of the seed ( brownish yellow) comprises mainly endosperm,a food tissue,which serves to support the initial growth of the embryo. In the seed at the centre of the picture,the embryo as a small darker shadow near the apex on the left-hand side of the seed.C. giganteum seeds are shed from capsules that may be as much as 2-3m above ground level. Each seed weighs about 5mg. This,and the large area of the membraneous wing,ensures efficient wind dispersal of the seeds | |
| Lizenzart: | Lizenzpflichtig |
| Credit: | Science Photo Library / Burgess, Dr. Jeremy |
| Bildgröße: | 5212 px × 3468 px |
| Modell-Rechte: | nicht erforderlich |
| Eigentums-Rechte: | nicht erforderlich |
| Restrictions: | - |
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