Puccinia scarlensis
| Puccinia scarlensis | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia scarlensis | ||||||||||||
| Gäumann |
Puccinia scarlensis is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of columbines and Schiller grasses . Symptoms of infestation by the species are yellow spots of rust and pustules on the leaf surfaces of the host plants. The fungus is found in the western Alps .
features
Puccinia scarlensis can only be recognized with the naked eye by the spore beds protruding on the surface of the host. They grow in nests that appear as yellowish to brown or blackish spots and pustules on the leaf surfaces.
The mycelium of Puccinia scarlensis grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Your pyknia are honey-colored and grow on the top of the leaves. The aecia of the species grow as cups in groups on brown-red to purple leaf spots. They have flattened spherical aecidiospores of 13-25 × 14-23 µm , which are warty on the outside. The uredia are elongated and yellow-brown. Their uredospores are spherical to slightly ellipsoidal, 19–29 × 18–26 µm in size, almost hyaline and prickly. The parts of the species grow under the leaf and black. The teleutospores are two-celled, cylindrical to short-clumped and 32–56 × 9–17 µm in size. They are brown, their stem is very short.
distribution
Puccinia scarlensis has a distribution area that includes the Swiss Alps .
ecology
The host plants of Puccinia scarlensis are Haplont columbines ( Aquilegia spp.) And Schiller grasses ( Koeleria spp.) For the dikaryote . The fungus feeds on the nutrients present in the storage tissue of the plants, its spore beds later break through the leaf surface and release spores. The species has a development cycle with pycnias, uredia, telia and aecidia.
literature
- Ernst Gäumann: The rust fungi of Central Europe. With special consideration of Switzerland . In: Contributions to the cryptogam flora in Switzerland . tape XII . Commission publisher Buchdruckerei Büchler & Co, Bern 1959.