R. Michael Davis

Amanita augusta, commonly known as the western yellow-veil or western yellow-veiled amanita, is a small tannish-brown mushroom with cap colors bright yellow to dark brown and various combinations of the two colors. The mushroom is often recognizable by the fragmented yellow remnants of the universal veil. This mushroom grows year-round in the Pacific Northwest, but fruiting tends to occur in late fall to mid-winter. The fungus grows in an ectomycorrhizal relationship with hardwoods and conifers, often in mixed woodlands.

Verticillium alfalfae is a fungus. It causes verticillium wilt in some plant species, particularly alfalfa. It produces yellow-pigmented hyphae and microsclerotia, while producing resting mycelium. It is most closely related to V. albo-atrum and V. nonalfalfae.

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Verticillium zaregamsianum is a fungus often found in lettuce in Japan. It can cause verticillium wilt in some plant species. It produces yellow-pigmented hyphae and microsclerotia, while producing few chlamydospores and with sparse resting mycelium. It is most closely related to V. tricorpus.

Verticillium nonalfalfae is a soilborne fungus in the order Hypocreales. It causes verticillium wilt in some plant species, including Ailanthus altissima. The fungus produces a resting mycelium characterized by brown-pigmented hyphae. It is most closely related to V. dahliae and V. alfalfae.

Verticillium klebahnii is a fungus often pathogenically inhabiting lettuce. It causes verticillium wilt (a disease state) in some plant species. It produces yellow-pigmented hyphae and microsclerotia, while producing abundant chlamydospores and resting mycelium. It is most closely related to V. tricorpus and V. isaacii.

Verticillium isaacii is a fungus inhabiting artichoke, spinach and lettuce, without necessarily being pathogenic. It causes verticillium wilt in some plant species. It produces yellow-pigmented hyphae and microsclerotia, while producing abundant chlamydospores and resting mycelium. It is most closely related to V. tricorpus and V. klebahnii.

Leucocoprinus amanitoides is a species of mushroom producing fungus in the family Agaricaceae. It can be found in Central California. It is unusual amongst Leucocoprinus species as it has a volva.

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