Observation 93294: Amanita ochrophylla (Cooke) Cleland
When: 2012-04-25
No herbarium specimen

Notes: Amanita sect. Lepidella

Proposed Names

ret
72% (3)
Eyes3
Used references: Bas’ 1969 monograph on sect. Lepidella, Reid’s 1980 article on amanitas of Australia. Both of these articles are listed in the bibliography here:
http://www.amanitaceae.org?Bibliography

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
Mycological group.
By: Tex (Stopwhispering)
2012-04-27 06:31:36 JST (+0900)

I think joining a group is on my list of things to do for this season.

List includes:

- Buy a microscope
- Collect samples
- Join Mycological group
- Avoid leeches
- Smell the mushroom!

I didn’t mention…
By: R. E. Tulloss (ret)
2012-04-26 22:25:51 JST (+0900)

Of course the shade thing involves moving the mushroom. I’m often working with collections made by other people in a group foray. So the mushroom comes to me, and I can set up in the shade to deal with photography.

Rod

Photography
By: Tex (Stopwhispering)
2012-04-26 21:46:18 JST (+0900)

Rod,

Cheers heaps for the tips, I quite like your shade idea and I think I could make good use of it. I usually bring a swag of homemade light changing apparatus with me on hunts, but it was raining solidly for most of this one. I use slim pieces of paper (like reciepts) to diffuse the light from the flash, reflecters made from foil and a few other tricks normally. My photography pretty much only extends to mushrooms, so my camera has been dormant for the last 4 months or so.

I generally shoot in RAW format which helps, and edit colour/brightness/contrast in gimp to get as close as I can to what I saw. This seems to be an art in itself. I tend to take much nicer and more accurate photos in dark, dense forest using a tripod and long exposure times, my shots out in the open always seem a bit off, or I get hotspots from the flash.

I have sent you an email, would love to have a copy of the pamphlet you hand out.

Thanks once again for all the help.

You’re welcome.
By: R. E. Tulloss (ret)
2012-04-26 21:13:25 JST (+0900)

Tex,

Glad to hear I helped.

I’d like to make a suggestion about photography. Your photographs are good. You mentioned difficulty with getting better shots of the caps.

This is something that it took me years to “get.” It looks like your photos are taken in bright sun. You can get a more even sense of color and reduce glare almost entirely by photographing in shade, but under open sky (nothing above you, shade produced from a side) and with reflectors reflecting the soft light onto the mushroom from all sides. I take pairs of sheets of cardboard (from the backs of pads of paper) and wrap them with aluminum foil (a little wrinkled is actually good, they get better with age) and tape the wrapped cardboards together (with strong clear type) like the covers of pageless books. Three or four of these go with me when I am in the field or at a research station photographing stuff coming in from the field. I shut down the aperture of the camera as much as possible to get the greatest depth of field (necessitating a tripod or other support because exposures get long). A polarizing filter will reduce any remaining glare (if necessary). The setup is relatively simple. Digital photography makes this easiers. And photoshop can help the results (even if you are not sophisticated with photoshop…just keep an unaltered copy of the photo in case things get screwed up).

If you send me an email address, I’ll send you a copy of a little pamphlet that Cristina and I give out at seminars. It’s still not everything I want it to be, but people tell me that it helps with basics both in the field, after the field (photography and write-ups of collections), and with microscopy. It will remind you about smells. :-)

If you collect and dry material, I am always interested in the amanitas that I don’t know well…and that includes nearly all the amanitas from Australia. A checklist for Australian and New Zealand amanitas and limacellas can be found here:

http://www.amanitaceae.org?Australia+and+New+Zealand

Very best,

Rod

Scent and other details
By: Tex (Stopwhispering)
2012-04-26 15:52:44 JST (+0900)

Rod,

I did not smell it, I seem to always forget to do this, I think I might need to tape a note to the back of my camera that says “Smell the damn mushroom!”.

I would put the gills at a colour very close to what I would call Ochre. I noticed some reddish bruising already present on the mushroom, however I did not actively bruise it so I cannot say how strong an effect it was.

The discription of A. ochrophylla seems an excellent fit, in paticular the pinkish hues in the cap, this is something I noticed almost instantly, but does not seem to carry over in the photographs so well. The description also seems to fit both size and also all other macroscopic details (that I can think of) very well.

Thanks for your time and information Rod, muchly appreciated.

A couple of questions…[2 edit2]
By: R. E. Tulloss (ret)
2012-04-26 01:04:52 JST (+0900)

Tex,

Do you recall the odor? It looks as though the flesh bruised reddish. Is that correct? One of the shots directly into the gills suggests that they were yellow-orange or ochraceous. Is that correct?

edit: It seems this species might fall into Bas’ Amanita subsect. Gymnopodae of which there are two species in eastern Australia: A. ochrophylla and A. ochrophylloides. Three descriptions of the former are available on the technical tab here:

http://www.amanitaceae.org?Amanita+ochrophylla

The original description of A. ochrophylloides is available in edited form here:

http://www.amanitaceae.org?Amanita+ochrophylloides

This material appears to match Bas’ description of A. ochrophylla from his 1969 monograph on section Lepidella; so I’ll start things off by suggesting that name.

Very best,

Rod

Created: 2012-04-25 19:00:10 JST (+0900)
Last modified: 2012-04-27 06:40:47 JST (+0900)
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