I think it’s a rust..on Wild Angelica?

[adampembs]

It has a stem like celery and is perhaps Angelica sylvestris. What appear to be spores are mixed in with what appear to be the plant cells. Strange looking thing.

[Chris Yeates]

Hi Adam

although everything else except the plant in question is in focus I’m pretty sure that plant is Fool’s Water-cress (I’m not saying anything 😆 😆 ) Apium nodiflorum (note the developing flowers in the leaf axils, not terminal as they would be Angelica). One is allowed to take a leaf or two home to photograph there, where it might be easier – perhaps you did? It would also be useful to know the diameter of those spores/chlamydospores. If I’m right about the host I strongly suspect this to be Buerenia inundata – actually an ascomycete (Taphrinales / Protomycetaceae) but a far from typical one a “strange looking thing” is a justifiable description. A few more pics / bit more info would probably clinch it (the blisters on the leaves, if there are some, should be tinged reddish brown) . . . .

cheers

Chris

[adampembs]

Yeah, a terrible photo, Im afraid. 😳

There were indeed some blisters on the leaves. I couldn’t see anything interesting under the scope but here are the macro shots.

The spores size range is 52-72 x 48-67µm. I hope that helps.

[Chris Yeates]

HI Adam

yes that looks right for Buerenia – see:http://www.ascofrance.com/search_recolte/3938” class=”bbcode_url”>http://www.ascofrance.com/search_recolte/3938 (click on thumbnail). Those ‘spores’ are actually asci, containing numerous tiny globose spores.

Not (for a change) new to Pembrokeshire: I see there are three records made by the sadly-departed Kenneth Payne, with whom I travelled down from Yorkshire on that 1987 BMS Spring Foray – http://www.fieldmycology.net/FRDBI/FRDBIrecord.asp?strVC=45&strName=Buerenia+inundata” class=”bbcode_url”>http://www.fieldmycology.net/FRDBI/FRDBIrecord.asp?strVC=45&strName=Buerenia+inundata

cheers

Chris

[adampembs]

Thanks Chris. Must have been an epic foray, you must have recorded 1000s of species. Still good to get another record every 40 years or so

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