Uromyces anthyllidis
| Uromyces anthyllidis | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Uromyces anthyllidis | ||||||||||||
| J. Schröt. |
Uromyces anthyllidis is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of milkweed and wound clover . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It is common in the western Palearctic .
features
Macroscopic features
Uromyces anthyllidis can only be recognized with the naked eye by means of the spore beds protruding on the surface of the host. They grow in nests that appear as yellowish to brown spots and pustules on the leaf surfaces.
Microscopic features
The mycelium of Uromyces anthyllidis grows as with all Uromyces TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. The spermogonia of the species growing on the underside of the host leaves are scattered. The aecia growing between them are cup-shaped and white. The aeciospores are usually angular to ellipsoidal, orange, warty and 18–23 × 18–23 µm in size. The uredia of the fungus, mostly growing underneath the leaves, are cinnamon to chocolate brown, small and uncovered early. Their light brown uredospores are mostly ellipsoidal to spherical, 23–24 × 22–23 µm in size and spiky. The parts of the species, mostly growing on the top of the leaves, are black-brown and uncovered early. The brown teliospores are unicellular, usually spherical, warty and 21–22 × 19–20 µm in size. Their stem is colorless and up to 33 µm long.
distribution
The known distribution area of Uromyces anthyllidis includes the western Palearctic .
ecology
The host plants of Uromyces anthyllidis for the Haplont are the milkweed Euphorbia cyparissias and various wound clover ( Anthyllis 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 Aecien, Spermogonia, Telien and Uredien and undergoes a host change, but is not dependent on him.
literature
- Ernst Gäumann: The rust fungi of Central Europe. With special consideration of Switzerland . In: Contributions to the cryptogam flora in Switzerland . tape 12 . Commission publisher Buchdruckerei Büchler & Co, Bern 1959.