Search found 51 matches

by Simon Horsnall
Thu Oct 01, 2015 2:09 pm
Forum: Rusts, Smuts, and Mildews
Topic: Mildew on Oxalis corniculata
Replies: 3
Views: 2517

Mildew on Oxalis corniculata

We've got a nasty invasion of Oxalis corniculata in the paving stones. Sat drinking coffee as is my wont on a pleasant afternoon I noticed one, and only one, plant was over-run with mildew. I am sure there will only be one species that infects O. corniculata but I can't seem to find which one. Close...
by Simon Horsnall
Tue Sep 29, 2015 9:30 pm
Forum: Invertebrates, and Insect Related (non-fungal) Plant Galls, Leaf Mines, etc.
Topic: Nematode Worm found in dung
Replies: 10
Views: 6204

Re: Nematode Worm found in dung

No, but not really looked as they are not my area. Like I said earlier, they look pretty short on distinctive morphological features. In addition, I think most of the literature will concentrate on the commercially important species ( Dictyocaulus spp , Meloidogyne spp , Phasmarhabditis hermaphrodit...
by Simon Horsnall
Tue Sep 29, 2015 2:23 pm
Forum: Invertebrates, and Insect Related (non-fungal) Plant Galls, Leaf Mines, etc.
Topic: Nematode Worm found in dung
Replies: 10
Views: 6204

Re: Nematode Worm found in dung

If you're using a graticule (I assume computer measuring works in the same way) then the image is 4 times smaller so your measured object is 4 times larger (does that make sense?). Therefore a 36.15 micron object with a X40 would be 144 microns with a X10. That would pull us into the realm of sensib...
by Simon Horsnall
Mon Sep 28, 2015 1:42 pm
Forum: Invertebrates, and Insect Related (non-fungal) Plant Galls, Leaf Mines, etc.
Topic: Nematode Worm found in dung
Replies: 10
Views: 6204

Re: Nematode Worm found in dung

But also see: CelegansGoldsteinLabUNC.jpg Caenorhabditis elegans is a free-living roundworm found in organic matter. Either way, they are in the 400-500 micron range. In addition, its eggs would be present in the dung ( Dictyocaulus viviparus wouldn't, as I stated in my earlier post). Having said th...
by Simon Horsnall
Sun Sep 27, 2015 7:46 pm
Forum: Invertebrates, and Insect Related (non-fungal) Plant Galls, Leaf Mines, etc.
Topic: Nematode Worm found in dung
Replies: 10
Views: 6204

Re: Nematode Worm found in dung

Can you tell what the dung came from? I am assuming it is a ruminant. A photo would help. I know nothing about nematodes but feel they could be partially if not completely host specific. I also cannot find a nematode as small as this. If they are something like lungworm, Dictyocaulus sp , then the e...
by Simon Horsnall
Wed Sep 23, 2015 7:58 pm
Forum: Fungi ID requests (post here if you aren't sure what type of fungus you've found)
Topic: Rosa growth, not even sure if it is fungal
Replies: 4
Views: 1924

Re: Rosa growth, not even sure if it is fungal

Thanks Chris. I'm glad I brought it home now to have a look at. It will at the very least inform further searches. It does raise one or two other questions. If I return to the same plant next year but earlier on, am I likely to find the other spore stages and have more success with ID (I see Henders...
by Simon Horsnall
Wed Sep 23, 2015 10:24 am
Forum: Fungi ID requests (post here if you aren't sure what type of fungus you've found)
Topic: Rosa growth, not even sure if it is fungal
Replies: 4
Views: 1924

Rosa growth, not even sure if it is fungal

As the title suggests, this might not even be fungal but I found a discoloured Rosa leaf which had small black growths emanating from the underside, densest in the places where the leaf was disoloured. I scraped a few onto a slide and they remind me of tiny Typha stems. They are swollen at both ends...
by Simon Horsnall
Mon Sep 21, 2015 5:12 pm
Forum: Fungi ID requests (post here if you aren't sure what type of fungus you've found)
Topic: Thought this was a rust but under scope it is weird
Replies: 4
Views: 1590

Re: Thought this was a rust but under scope it is weird

I think my mycological knowledge (lack of) has already been demonstrated but if I could make a suggestion based on what I think your plant might be. I think it is one of the Curcurbits and so does Pseudoperonospora cubensis (Berkeley and Curtis) Rostovstev fit? Of course if my plant ID is wrong then...
by Simon Horsnall
Thu Sep 17, 2015 11:10 am
Forum: Local/Regional Fungi Groups, Fungi News, Courses & Events
Topic: North West Fungus Group - Foray Finds
Replies: 7
Views: 5215

Re: North West Fungus Group - Foray Finds

Sorry Mike - I should have said its been Id'd properly as its current name of E. muscae from the foray and the specimen may well be winging its way to Kew as its on Scathophaga stercoraria not a Muscidae - not unusual, I have some on this from a couple of years ago, but more often associated with M...
by Simon Horsnall
Wed Sep 16, 2015 3:30 pm
Forum: Rusts, Smuts, and Mildews
Topic: Mildew on Comfrey
Replies: 9
Views: 3904

Re: Mildew on Comfrey

Many thanks to all those who have helped with this one. I shall once again apologise for my terminology but I am a real newcomer to this area (before the start of the year I had a fungus list of one: Amanita muscaria , I'm now on 22). Over the autumn I am hoping to start to get to grips with the gen...
by Simon Horsnall
Tue Sep 15, 2015 1:02 pm
Forum: Rusts, Smuts, and Mildews
Topic: Mildew on Comfrey
Replies: 9
Views: 3904

Re: Mildew on Comfrey

Thanks for the welcome and the links Chris. I'm more than happy to help with Siphonaptera, although photographs are not really a good way of going about it. I'm hoping these are better (suitable) photographs. About the only healthy leaf on the plant. Upperside Picture 016.jpg Underside Picture 015.j...