Collection location: Davis, California, USA [Click for map]
On exposed small roots at the base of a Washingtonia sp. (W. filifera or W. robusta), these are very small and hard to see with the naked eye. The texture is a lot harder then they look and with a little effort I managed to scrap a little bit onto a slide and found interesting stuff…
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They’re incredible, aren’t they?? Really wish someone else had taken up the torch when Bruce Ryan passed away 5-6 years ago. Still, great source, even if slowly becoming out-dated.
but so many things to get and a limited number of funds, its definitely up there on the list though!
And those lichen keys are quite interesting and appreciated.
Check eBay; you can get perfectly good ones for ~$100. Mine is 10x-30x from “precision*world”. I’m still very happy with it after ~5 years. Don’t know what I would’ve done without it. Don’t wait, it’s just not worth it! (Also useful for straightening out pins on CPUs in a pinch — that’ll pay for it twice over right there! :)
I’ll see if I can use one at the local university.
Do you have a dissecting scope? Granted, when the apothecia are this small, it’s difficult to get a clean apothecial section even with a dissecting scope and good sharp razor. Still, if you manage to slice one open, even if the section is too thick to work under the compound scope, you should be able to see through the dissecting scope whether the apothecium is pale inside or black.
I tried to do an apothecial section, but I can’t really see what I am cutting and I believe I failed…
Though, I manged to get some better spore shots and perhaps an ascus?
Apothecia with poolr developed proper exciple, immarginate; paraphyses and excipular hyphae similar, abundantly branched and anastomosed; algae usually micareoid (less than 8 µm across, often in pairs, penetrated by intracellular haustoria); thallus often goniocyst-like
If that doesn’t match, you wind up at this couplet:
Look at Bruce Ryan’s unpublished keys for more information about all these genera:
I’ll loook some more to see if I can find an ascus, are any spores or other things I found worth measuring?
The photos haven’t made it to the image server yet, so I can’t see full-size versions. (It’ll try again tonight automatically, sorry it takes so long sometimes.) The key feature is colorless septate elongate spores. According to the Sonoran Flora, that makes it Micarea, Biatora or Catillaria. Worth considering the other two genera, too. The keys require that you know the fine-scale structure of the ascus tip. Good luck! :) Chemistry might help, too.
Created: 2011-12-10 17:10:18 PST (-0800)
Last modified: 2011-12-10 17:10:20 PST (-0800)
Viewed: 99 times, last viewed: 2017-12-25 07:32:05 PST (-0800)