Showing posts with label Stone Fly. Show all posts
Showing posts with label Stone Fly. Show all posts

Friday, 17 April 2009

River Deele

The River Deele is always good for some interesting shots. This is one of the Nemouridae - a Stonefly. These are rarely seen, since they spend the bulk of their lives as nymphs under stones in rivers. The adults are short-lived, generally having no mouthparts.


Butterbur has put up its flower spikes all the way along the river bank:


This is the last stages of the Coprinid Bolbitius vitellinus. You have to be up early to see these ones in pristine condition: they generally only last a day or two at most.


I always think that the early, uncurling, fronds of ferns have a distinctly animal look about them. Scaly Male Fern:



Hartstongue Fern:


Ramsons, or Wild Garlic, is just about to flower. The flowerheads come pre-packed in a protective sheath:


There's a very interesting story behind this fungal rust on the Ramsons. Many rusts have two hosts - 'alternate hosts'. The two hosts don't have to be remotely related, and the alternate host for this Puccinia sessilis is Reed Canary Grass - Phalaris arundinacea. So the rust spends the summer months on Ramsons and the winter months on Reed Canary Grass. That's all very well, but I haven't found Reed Canary Grass within 25 miles of this spot. Spores are airborne, so I presume the spores travel quite some distance to travel between their summer and winter homes.