Observation 140574: Amanita austrostraminea D.A. Reid
When: 2013-07-20
0 Sequences

Collected and photographed by S.J.Greco.
Those are are her accession numbers in the photo which I believe were used to derive accession numbers at amanitaceae.org where these samples now reside.


Species Lists


Copyright © 2013 S.J.Greco
At collection site in forest. Photo taken by Shenan Joy.
Copyright © 2013 S.J.Greco
Cap detail. Photo by Shenan Joy taken in Oahu soon after collecting.
Copyright © 2013 S.J.Greco
Cap detail w/ scale. Photo taken by Shenan Joy soon after collecting.
Copyright © 2013 S.J.Greco
Gills, stipe, skirt, bulb.
Photo taken by Shenan J. Greco soon after collecting.
Copyright © 2013 S.J.Greco
Lots of good cap and skirt detail.
Photo taken by S.J. Greco soon after collecting.
Copyright © 2013 S.J.Greco
Another variation showing the gills and stipe.
Photo taken by S.J. Greco soon after collecting.
Copyright © 2013 S.J.Greco
Side view
Photo taken by S.J.Greco soon after collecting.

Proposed Names

54% (1)
Recognized by sight: As suggested by Dr. Rodham E. Tulloss (user RET).
74% (2)
Eye3 Eyes3
Used references: See below.
Based on microscopic features: Using key of Bas (1969), as well as data from Reid (1980), Wood (1997), and http://www.amanitaceae.org?Amanita+austrostraminea

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Checking in for DNA results, if available
By: Debbie Viess (amanitarita)
2017-03-20 16:55:24 PDT (-0700)

No info on your website, Rod.

Were these run, and where did they fall out, if so?

Are they non-MR amanitas or not? Can we tell by just looking at macro/micro?
Unclear from habitat whether they are MR or saprobic.

Accession numbers appear to be from the original collections in OZ early last century.

I hope you find A. californica someday
By: P. Hill (phill)
2016-06-22 14:07:21 PDT (-0700)

Best of luck finding the A. californica with, near, or far from Eucalyptus trees.
If I hear about you in any landscaping in Southern Cal (don’t play in traffic :) ) or any Eucalyptus tree farms anywhere in CA, I’ll know what you’re looking for. :)

By: Debbie Viess (amanitarita)
2016-06-22 07:33:15 PDT (-0700)

according to Rod, these amanitas hail from OZ (Australia) not NZ.

like many other saprobic species, they undoubtedly got moved around with trees and their accompanying soil and mulch. I don’t believe that pure euc mulch has much of a market, though. I think that most of these introductions are both accidental and incidental. saprobes eat organic matter, so are not associated strictly with trees, but it is the trees and plants that we choose to move around the world, and their soil is hardly sterile.

We have seen sp. like Clathrus ruber also get moved around with plant materials, and end up spreading widely throughout suitable habitat, like here in the BA of CA. It is originally a Mediterranean sp., brought here by humans with plant materials. Hitchhikers, as it were.

in fact, there appear to be quiet a few interesting non-native saprobic amanitas/Saproamanitas in Hawaii, all no doubt brought via humans, one way or another. Don Hemmes, Professor Emeritus at U of Hawaii, Hilo, has documented several, like Amanita farinacea and A. manicota.

For this non-native amanita to be so successful in numbers, it just managed to find plenty to eat! And it is possible that native mushrooms that are not adapted to eucalyptus toxins have difficulty breaking down the euc debris. But who knows?

So, maybe this sp. has a built-in selective advantage for eating euc mulch, which is why it has been so successful in Hawaii, which, just like in CA, has extensive euc forests, among many other non-native trees. Does it occur in urban/grassland situations, too? or just in planted euc forest in Hawaii?

Since austrostraminea has only one known close relative (californica), according to Bas’ original work, and that one never got sequenced (FB is a hundred years old or so?), I’ll be curious to see who is closest to this one on the amanita DNA tree.

Does it cluster with other saprobic amanitas like thiersii, etc? I am not adept at running BLAST sequences, but I will check out Rod’s webpages to see what’s up.

Do you know where it fits, DNA-wise, Rod?

Oh NM = Non-mycorrhizal! Oh course.
By: P. Hill (phill)
2016-06-21 19:28:13 PDT (-0700)

Oh Yes, I understand. I really meant the whole thing up on Oahu an artificial Eucalyptus forest however the spores or mycelium got there, not necessarily that it was literally on the root balls.

These amanitas are living with their friends from back home whether they got their on roots, in the dirt, on the leaves, with shipments of other plants, in the sailing ships, or even floated through the air and then grew with their old friends.

If I recall correctly, the reforestation efforts stretch from King Kamehameha III in the mid-19th Century to the present and includes lots of use of fast growing trees, including many Eucalyptus which resulted in the not-natural and not-native eucalyptus forests providing a not-natural but not completely unknown forest for at least this Australian Amanita to take up its niche, whatever it is, in that forest.

Similar to some invasive weeds, this mushroom seemed to be going crazy at certain times. At the elevation and time I saw it, it was by far the most abundant mushroom to be found – 100s just near the trail at upper elevations in the park. Shanan saw it at this time two years ago. I saw it over the July 4th holiday. Shanan returned and found it a week later without any trouble.

Who knows, maybe some other species didn’t make the journey and the Southern Straw-colored Amanita (Amanita austrostraminea) is missing a competitor in this non-native Hawaiian Eucalyptus forest.

By: christopher hodge (christopher hodge)
2016-06-21 18:04:33 PDT (-0700)

Meaning not mycorrhizal. Some Amanita species are saprotrophic.

By: P. Hill (phill)
2016-06-21 17:50:32 PDT (-0700)

What is non-MR?

Thanks for the reminder
By: P. Hill (phill)
2016-06-21 17:34:56 PDT (-0700)

Having to enter all these I got out of the habit of using the “Notes” field on the observation (not on the photos). One of the observations contained a credit to S.J.Greco. I have now added that credit along with a note that the numbered samples went on to N.J.

On another note, at least one of these Oahu samples were sequenced. You can see R.E.T’s mention that it had been done on another (possible) Amanita austrostraminea observation recorded on MO found on the Island of Hawaii.

and that is exactly how MO is supposed to work!
By: Debbie Viess (amanitarita)
2016-06-21 16:03:42 PDT (-0700)

I was just curious how it all played out. No way to really know when these mushrooms were brought in to Hawaii, though.

If this is indeed one of the Saproamanitas, it is not restricted to eucalyptus, although it might well have come in on soil bound to eucalyptus tree roots. In its home range of Australia, it apparently occurs under shrubs; exactly which shrubs is not mentioned.

Yes, it seems inevitable and logical that the introduced trees were the vector, one way or another. Long way for a mushroom to swim, eh?! ;)

If you did not make this collection, it is customary to cite the collector in your intro or comments, which you did very nicely right here. You do cite Ms. Greco as the photog, though, which made me curious about how many people it took to create this full posting! That’s a good thing, not a bad one.

The label made me think that there was a fungal survey! wishful thinking on my part, and when it does happen, count me in!

BTW, I love how these detailed MO obsies lead me to new, weird discoveries.
For instance, popping over to Rod’s webpage on this sp., I see that the closest apparent relative to austrostraminea (pre-DNA), is a curious, mostly unknown amanita called californica, one of several unnamed, possibly non-MR “lepidellas” in CA. No photo of that one exists, which is a real shame, and no one alive today has seen it in a fresh state. It gets a quick mention in Thiers’ “Agaricales of California,” so I have heard the name and wondered about this amanita before.

S.J.Greco Samples were by request
By: P. Hill (phill)
2016-06-21 14:29:27 PDT (-0700)

The original observation which was my observation 139489. R.E.T. wanted other samples, so Ms. Greco was kind enough to be a great field naturalist and sending the samples to R.E.T after taking good photographs of the fresh specimens.

More Information.
By: P. Hill (phill)
2016-06-21 14:00:41 PDT (-0700)

You open with a sentence fragment. What is it you are saying or asking?

The spread to the Hawai’i islands and the Island of Oahu in this case, probably happened many decades maybe even in the 19th century when many different Eucalyptus trees were used to reforest the island. Amanita austrostraminea associates with Eucalyptus spp. and the forests high on Oahu are heavy with various Eucalyptus sp.

Who: Yes, Rod, received all mushrooms that are in the images recorded here that have accessioning numbers with them.

I saw this same species, photographed them and recorded them on MO, but I didn’t bring any specimens home. Rod saw my images and wanted a sample. Upon request from myself and Rod, Shenan, a resident of Oahu returned to the same park I’d seen them in and picked many, dried them, and shipped them to Rod … a long story parts of which I have left out. All to record a NZ mushroom 1000s of miles from where it had been previously recorded, but probably had been happily living in this transplanted Eucalyptus forest for many decades.

What would be great is a fungal survey, not just a mushroom photographer who happened to be vacationing on the island of Oahu, whose photos caught the eye of researcher across the country who recognized it as out of place from its normal range.

What would be your suggestion for recording the person who actually picked the mushroom? I see that not all photos on all samples are copyrighted or described as being taken by Shenan, I’ll go through and update both.

it is very interesting
By: Debbie Viess (amanitarita)
2016-06-21 07:56:59 PDT (-0700)

that a non-MR Amanita/Saproamanita is also getting carried around from continent to continent on tree roots/root balls.

It is a little confusing who saw what where, though. You received all of the Oahu collections, Rod? You speak of the micro, so you must have held this in your hand.

And it was actually collected by … whom?

Fungal surveys on Oahu? Who knew! It’s not just about invasive species of birds anymore. Here come the OZ amanitas!

Created: 2013-07-21 22:46:07 PDT (-0700)
Last modified: 2016-06-22 14:24:26 PDT (-0700)
Viewed: 151 times, last viewed: 2017-06-16 05:27:52 PDT (-0700)
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