Observation 141115: Rossbeevera T. Lebel & Orihara

This was an unusual growth attached to a living tree in the bark crevasse. The growth was about 1cm in length and had blue and purple colouring on the outer area. It was attached to the wood rather firmly and I cut the growth in two to show the colour internally. This may not be a fungi but loaded for general comment.

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Recognized by sight
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Recognized by sight
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Recognized by sight
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Recognized by sight: as per Michael W. and Roy Halling.

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agree likely Rossbeevera species
By: Teresa (truffleladytl)
2013-10-15 18:44:35 CDT (-0400)

Heyla folks, apologies I am not checking the posts here very often at the moment. I’d agree it looks like a Rossbeevera vittatispora. Basically the spores are barely ridged, what you mostly see is that spores when seen from the tip/end rather than sideview, are not round but 4-5 sided.
Its fairly common to find Rossbeevera in New Zealand growing in old, well decayed logs. I’ve not seen it growing up the side of a tree trunk before though, so an interesting record.
Cheers Teresa

just odd to me…
By: Debbie Viess (amanitarita)
2013-07-29 10:58:27 CDT (-0400)

to see a secotioid fungus on the trunk of a living tree! But I guess that’s not odd, but just OZ!

So, who would eat these and spread spores? Or do they just wear away in place?

I have been using cotton swabs to clean my 100x lens. I will look for your high grade immersion oil.

Never too late to learn new tricks. ;)

Oil Immersion
By: Roy Halling (royh)
2013-07-28 18:24:47 CDT (-0400)

Hi Deb: Immersion oil made by Cargille is top drawer stuff.

Before we knew that some organic compounds were nasty to humans, xylene was the solvent of choice for cleaning off the oil. Many microscopy and scientific supply company websites still recommend it as a solvent. Some say isopropyl alcohol or acetone. Depending on the adhesive used to hold the lens in place, some of these solvents will unglue the lens. Definitely not good.

If you’re going to use a solvent, a little goes a long way. Swipe is the key word here – not round and round like scouring out the kitchen sink or bathroom porcelain.

Since I use oil immersion at least once a week, I don’t use solvent to clean the 100x lens. Rather, I use a Kim-Wipe (made by Kimberley, same company makes Kleenex, but I didn’t say use Kleenex), recommended to me by a guy who runs a microscopy facility at a major university for the past 25 yr. Some manufacturers say use a lens tissue.

When I wipe off oil from the lens end of the 100x, I use the lens paper/Kim-Wipe and swipe once or maybe twice until the tissue comes away “clean.” The Cargille oil hasn’t hardened on the lens since I’ve been using the ’scope (about 29 yr).

Many mycorrhizal fungi often “fruit” above ground and appear on wood or bark of trees. Boletellus chrysenteroides is usually associated with wood. Boletellus emodensis often appears at the base of trees. I have seen Scleroderma at shoulder height on healthy eucalypts in northern Queensland. Makes me wonder why I’m looking down for macrofungi . . . Cheers!

ecologically speaking…
By: Debbie Viess (amanitarita)
2013-07-28 10:51:46 CDT (-0400)

who or what vectors these spores? One of those southern hemisphere, blue-attracted birds? So interesting that this sp. fruits on the bark of LIVING trees!

Great work, Ian. You are too modest. Don’t let the oil immersion lens scare ya…at least it doesn’t bite, like so much of what you encounter in your field excursions! ;)

BTW folks, what do you all use to clean your immersion lens after the oil? I have been using nail polish remover…for its lower toxicity.

100x spores
By: Roy Halling (royh)
2013-07-28 09:39:20 CDT (-0400)

As Michael has said, the spores do look right for Rossbeevera, and it does occur in the No Hemisphere. Thanks, Michael, for that one! I forgot about distribution in China, Japan.
This Observation 95308 has some Rossbeevera spores to view. As I recall, Lebel & Orihara noted that Rossbeevera has fewer longitudinal ridges and a different (longer) profile.

By: Michael W (Michael Wallace)
2013-07-28 01:44:54 CDT (-0400)

…if you could make another collection with more specimens you could send some to Teresa Lebel, I’m sure she would be interested in studying, let me know if you are interested and I can put you in contact with her.

About Chamonixia being a Northern Hemisphere Genus, that is true but Rossbeevera is found in both hemispheres.

By: Michael W (Michael Wallace)
2013-07-28 01:41:10 CDT (-0400)

The images are good enough for me to see that the shape of the spores is good for Rossbeevera, if you could produce a higher resolution image you would see that there are about three to five longitudinal ridges, you would most likely need to view the spores with an oil immersion objective to see the ridges:)

Scoped Spores??

I am really not sure how readable these images are. I feel I should be able to produce something sharper esp. in detail. Hope these images go to helping!!
My education in this field is about 1 outa 10.

yes Ian, please do scope this!
By: Debbie Viess (amanitarita)
2013-07-27 15:01:52 CDT (-0400)

As always, your finds are spectacular! Keep up the good work.

By: Roy Halling (royh)
2013-07-27 10:25:32 CDT (-0400)

Ian, have a look with your new microscope and tell us what the spores are like. Chamonixia is a northern hemisphere genus, so Rossbeevera as noted by Michael W. is a good bet.

By: Michael W (Michael Wallace)
2013-07-27 01:13:06 CDT (-0400)

…possibly Rossbeevera.

Created: 2013-07-27 00:18:10 CDT (-0400)
Last modified: 2013-10-15 18:45:24 CDT (-0400)
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