sean freeman
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Everything posted by sean freeman
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Seem like a reasonable price though I don't know what the seminars were like so hard to know if it would turn out to be good value..will have to ask a few US Arbs who might have attended.
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Sections through the stem showing the white rot decay of Phellinus robustus on a Poplar gum ~Eucalyptus platyphylla. The fungi has colonised tissues throughout the heart wood but has found the barrier zone (wall 4 in the CODIT model) a greater challenge, it has been breached in a number of places evident on the standing tree by the fruiting bodies. In my experience Eucs with this wood decay fungi growing within them stay upright for many years often decades before failing, even in this excessively damaged tree (by construction works in the early 1980's) a ring of sound and functional wood was still being produced.
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Phellinus robustus syn Fomes robustus...the pictures show old brackets really quite desicated cracking and dark as well as younger brackets typical in their form. This Phellinus species is very common in both native bush and urban trees, it is not what I would consider to be an extremely agressive decay fungi (I'll show some cross sections of a felled Eucalyptus with many years of battle between fungi and tree in the next post) however (in my experience) it certainly can cause an extensive white pocket rot in the heart wood. All the brackets were formed on declining Acacia sp (wattles)
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Here are some lovely little fruiting bodies of the one of the less well known Ganoderma sp, this one is Ganoderma cupreum syn Ganoderma chalceum. These fruiting bodies were popping up all over, on the remains of the surface roots of a dead Mango tree ~ Mangifera indica
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I put this one in really for fun more than anything else I am calling it Phellinus badius but really I am only confident that it is Phellinus sp. It is the largest single (Phellinus) conk I have personally found it was 280-290mm high and from its point of attachment to the tree out to the rim of the spore bearing surface was 400mm, I am not sure how much it weighed but guessing around 5-7kg (I have never thought to carry a set of scales with me when assessing trees perhaps I will consider it next time I'm in the tropics!) I wish we'd had a saw or something capable of cutting into this thing to look at the cross section...I suspect it will be gone by the time I get back up there in three weeks. The conk was on the ground but I am assuming it had fallen off a horizontal Banyan fig limb that was very badly decayed directly above its resting place on the ground.
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A quite different looking fungal fruiting body with a smaller pore size than the last two examples. Cramp balls, or King Alfred's cakes ~ Daldinia concentrica looking quite purple in these shots not the typical black outer layer commonly seen in the photographs in many ID books. Growing here on stubs on a Banyan fig ~ Ficus benghalensis in North Queensland. In the first picture you can see a darker older fruiting body peeking around the edge of the stub The sooty layer on the surface of the stub is formed by the black spores being released by the fruiting body...in the cross section you can clearly see where is name concentrica comes from:sneaky2: Daldinia concentrica belongs to the family Xylariaceae an in the same genera as another Ascomycetes fungi Hypoxylon, which will I suspect be familiar to many of you, and degrading wood tissues as a soft rot.
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Sure no problem...not having a go at you or them just ....well wow...like being back at highschool (went to a Catholic School taught by Nuns and Priests) But I agree there is some relevance in veiwing the breadth of the responses to the loss of such an iconic tree.
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My very distant understanding is that the 'gold standard' around which it is possible to base the calculations on was (and is) the Stuttgart table of wood strength, you used to be able to view the table in the documents available on the tree consult website, but that website now appears to have been altered...but google (don't you love it!) still finds this one http://www2.tree-consult.org/images/pdf/eng/brudi_trees_and_statics.pdf Mr Tree has very ably stated what the limitations are, and when you consider the common form of urban tree they are limitations that seriously limit its application for most of the tree related concerns we get to see here; those limitations (correctly but frustratingly) prevented the statics test from being applied to the Laman Street Figs in Newcastle NSW. -
Wow, Biblefocus.net is an unusual site to say the least
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My text (Ian Hood 2003 Fungi on wood in Queensland) describes Pycnoporus cinnabarinus (we do not have P.cinnabarinus in the southern hemisphere) as being almost identical except that it has larger pores.
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I have to admit () that until I got back to my digs with the pics I had failed to notice the plugs under the fruiting body I can only think they are the result of some grub having its way with the lovely orange entre.
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Here's another vibrant red/orange fella.. Pycnoporus sanguineus fairly commonly found on deadwood in the bush, studies in tropical climates have indicated this fungi is a white rot saprophyte(degrading lignin along with cellulose and hemicellulose). These shots were taken of fruiting bodies on fallen deadwood (Melaleuca mostly) in a wetland environment (Melaleuca swamp).
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To show some of the variation in form that the fruiting body can have here are a few shots of Curry Punk ~ Piptoporus australiensis fruiting on Sheoak ~ Casuarina cunninghamiana This fruiting body was photographed soon after heavy rain and was significantly younger than the previous example on the Quandong, the upper surface has not developed a distinct skin, and there is no algae growing on it.
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So here are some pictures of fungi I have come across in my travels through Oz...mostly in Queensland where I live and work but also some form further afield during trips to other states and territories. I hope that some of you find interest in the often subtle differences between many of our fungi and their close European relatives. First up Curry Punk ~ Piptoporus australiensis found growing at the base of a Blue Quandong ~ Elaeocarpus grandis Its synonym is Polyporus australiensis and is often found on Eucalyptus species amongst other native hardwoods.
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Jill, Ted and Neville have been wonderful supporters of our efforts out here, and taking Jill and Ted (and David and Andrew) to some of our local favourites when they were out here in 2008 was a real pleasure...looking forward to dragging Neville out to some Veterans this year.
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Bugs, bees and beasties- Bio-diversity matters
sean freeman replied to Tony Croft aka hamadryad's topic in Ecology
Thats a very well researched and written paper (IMO) it is interesting but should not surprise anyone that Long Term Ecological Research at WARRA in Tasmania has established almost identical obligate relationships between certain saproxylic beetles and large diameter deadwood (Euc) habitat - along with associated wood decay fungi - of course! -
What a stunning location, the UK is blessed with some exceptional pockets of ancient habitat.
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Gano's certainly typify the behaviour
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Lovely shot there...Haptomorphosis is another awkward word which defines what your picture so simply illustrates.
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Rare fungi 2 coming to screen near you!
sean freeman replied to Tony Croft aka hamadryad's topic in Fungi Pictures
Beautiful pics:thumbup1: Thankyou for posting them -
Likewise it was always one of the most pleasurable things I did on weekends in the 1980's wandering from pocket park to pocket park in the midst of dense urban development... (The other of course also including wandering from location to location but these were places where the interest lay just on the other side of the bar (often a beautiful slab of timber itself:sneaky2:)
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Lapsed pollards...shade makes the situation even worse?
sean freeman replied to Xerxses's topic in Tree health care
Main paper... http://www.cityoflondon.gov.uk/NR/rdonlyres/3560F960-F4D4-4F35-AE82-57B80D72816C/0/OS_BB_manageplan0510.pdf -
Lapsed pollards...shade makes the situation even worse?
sean freeman replied to Xerxses's topic in Tree health care
A relatively shortened version of the BB paper has been available on the ATF website for a bit.. http://frontpage.woodland-trust.org.uk/ancient-tree-forum/atfnews/images/Read%20QJF%20April%202010.pdf -
Bugs, bees and beasties- Bio-diversity matters
sean freeman replied to White Noise's topic in Ecology
The moth picture made me remember this very engaging encounter a month os so back between me and a magpie ~ Gymnorhina tibicen when the monochromic chap thought I was going to take away his mothy meal...
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It is a truely inspiring little piece of positive community action to articulate just how important many of the residents feel about their living heritage. Sentiments tend to come to the fore when people contemplate the loss of things they value highly.
