Keizer's Fungus guide

[RobArb]

i ask as my azalea last year grew some weird leaf growth but seems to have healed?

 

they were leaves but very thick and waxy feeling and curled, didn't know what it was at the time, but seems fine now?

[Fungus]

Some leaf (and sprouting branch) parasites are depicted and described.

1. Exobasidium vaccinii, a basidiomycete forming gall bladder like structures on (the lower sides of) leaves of Azalea and Vaccinum species of 1-2 cm in diameter, which causes the leaves to curl upwards, outer surface powdery, matt, whitish to pink-red with yellowish margin.

2. Gymnosporangium clavariiforme, a rust, in its wintertime stage living on cultivated Juniperus species other then J. communis, forming orange yellow banana- to irregularly shaped teleutosori on needles and branches, causing necrosis of the affected parts of the tree. In its summertime stage causing orange yellow to rusty stains or spots on leaves of Pyrus.

3. Rhytisma acerinum, an ascomycete with irregularly, flattenend cushion-shaped stromata of 1-2 cm in diameter, outer surface veined, black, inner flesh ochraceous grey, living on/of the leaves of (indigenous) Acer species, infecting the sprouting leaves with spores originating from the stromata on leaves fallen on the ground.

4. Rhytisma salicinum, an ascomycete with elongate, flattened cushion-shaped thin stromata of 1-2 x 0,5 cm, outer surface veined, black, living on/of leaves of willows.

5. Uncinula adunca, the teleomorf of a mildew, fruiting with solitary sunflower or marguerite shaped, a few millimetres in diameter round black circles with marginal whitish "hairs" curved at the tip, growing on leaves of willows.

6. Puccinia spp., one of the many rusts living on leaves, stems and branches of plants and trees, this species on the sprouting branches and leaves of a willow.

[Fungus]

i ask as my azalea last year grew some weird leaf growth but seems to have healed? they were leaves but very thick and waxy feeling and curled, didn't know what it was at the time, but seems fine now?

 

Exobasidium vaccinii or one of the other 5 species known from the UK living on Azalea and/or Vaccinium ?

[Fungus]

Fomitopsis pinicola.

Perennial brackets hoof- to bracket-like shaped, 5-20 x 5-10 cm, 3-15 cm thick, with whitish to yellowish rounded marginal growth zone. Upper surface concentrically zoned, smooth, hard due to resin-like top layer, orange-red to yellow pink or grey-pink, becoming grey to grey-black at the center, tubes 1-2 mm long, cream to ochraceus yellow, pores 3-4 per mm, circular, cream to yellowish to brownish, often with yellowish guttation drops, flesh hard, tough, cream to ochraceus, smell somewhat sower, irritating, spores white.

Necrotrophic parasite, causes brown rot, on coniferous trees and Betula, Fagus, Quercus, Acer and Prunus.

 

Photo 1 : on Picea.

Photo 2 : on Betula.

Photo 3 : on Prunus.

Photo 4 : on Fagus with guttation drops.

---

[Fungus]

Annual brackets fan-shaped to broadly tongue- or spatula-shaped, with several leathery brackets growing from a single central, repeatedly branched stem, 20-50 cm in diameter, brackets 4-10 cm wide, 5-10 mm thick, with lateral stem, upper surface fibrillose-wrinkled, cream to ochrous brown to grey-brown, tubes 2-5 mm long, whitish, pores 2 per mm, circular to polygonal, whitish to cream, flesh fibrillose, white, smell pleasantly fresh, spores white.

Biotrophic parasite, causing white rot, at the base and on the roots or stumps of old oaks. Summer to autumn.

Can be mistaken for Polyporus umbellatus, a saprotrophic species, which shows more branching and fruits at the base of old beeches, oak and alder.

 

Photo 1 : young on stump of Quercus robur.

Photo 2 : old on roots of Quercus robur.

Photo 3 : Polyporus umbellatus on Fagus.

---

[David Humphries]

Annual brackets fan-shaped to broadly tongue- or spatula-shaped, with several leathery brackets growing from a single central, repeatedly branched stem, 20-50 cm in diameter, brackets 4-10 cm wide, 5-10 mm thick, with lateral stem, upper surface fibrillose-wrinkled, cream to ochrous brown to grey-brown, tubes 2-5 mm long, whitish, pores 2 per mm, circular to polygonal, whitish to cream, flesh fibrillose, white, smell pleasantly fresh, spores white.

Biotrophic parasite, causing white rot, at the base and on the roots or stumps of old oaks. Summer to autumn.

Can be mistaken for Polyporus umbellatus, a saprotrophic species, which shows more branching and fruits at the base of old beeches, oak and alder.

 

Photo 1 : young on stump of Quercus robur.

Photo 2 : old on roots of Quercus robur.

Photo 3 : Polyporus umbellatus on Fagus.

---

 

 

 

Fine shots, particularly admire the pinicola

 

Have you got shots of the pores to compare for both the frondosa & umbellatus Gerrit ?

 

 

.

[Fungus]

Have you got shots of the pores to compare for both the frondosa & umbellatus ?

 

David,

No, I only found P. umbellatus once and it was under poor light conditions, as you probably can see in the photo.

[David Humphries]

David,

No, I only found P. umbellatus once and it was under poor light conditions, as you probably can see in the photo.

 

 

 

No worries, not one I've knowingly had the pleasure of yet.

 

 

 

.

[RobArb]

Have you heard about the new fungi species found?

 

It was in the top 10 new species found in the paper yesterday and is called mycena luxaeterna I think, the eternal light mushroom?

[David Humphries]

Have you heard about the new fungi species found?

 

It was in the top 10 new species found in the paper yesterday and is called mycena luxaeterna I think, the eternal light mushroom?

 

 

 

Here's a link....

 

Glow-in-the-dark mushrooms discovered - Technology & science - Science - LiveScience - msnbc.com

 

 

Not sure it's a first, as the rhizomorphs of Armillaria are also bio-luminescent.

They were used in medieveal times to help light barns.

 

Possibly many others as well.

 

 

.