Uromyces oblongisporus
| Uromyces oblongisporus | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Uromyces oblongisporus | ||||||||||||
| Ellis & Everhart |
Uromyces oblongisporus is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the daisy family Artemisia tridentata . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. She is endemic to Wyoming .
features
Macroscopic features
Uromyces oblongisporus 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 oblongisporus grows as with all Uromyces TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Their spermogonia and aecia are so far unknown. The same applies to the uredia of the mushroom, they may not be formed. The parts of the species growing on both sides of the surfaces of the host leaves are black-brown, powdery and uncovered. The chestnut-brown teliospores are unicellular, usually ellipsoidal to long-ellipsoidal, warty and mostly 30–37 × 18–21 µm in size. Their stem is colorless and up to 40 µm long.
distribution
The known distribution area of Uromyces oblongisporus only includes Wyoming .
ecology
The host plant of Uromyces oblongisporus is Artemisia tridentata . 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 goes through a development cycle of which only Telien and their host are known. It is therefore impossible to say whether she will change host .
literature
- George Baker Cummins : Rust Fungi on Legumes and Composites in North America . University of Arizona Press, Tucson 1978, ISBN 0-8165-0653-1 .