Observation 6040: Arrhenia retiruga (Bull.) Redhead
When: 2008-01-14
No herbarium specimen

Notes: Growing on moss.

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Neat! Thanks!
By: Douglas Smith (douglas)
2008-01-17 01:18:51 CST (+0800)

Neat, hey great! It will good to get more photos where the clamp connections are really checked here. So, methyl blue worked best here? Now to get some better validation A. lobata, and see if there are any other macro-features that will be different.

These do look like what I called A. “retiruga” at least. Someday I’ll get better at checking the clamp connections.

Clamps not observered
By: Darvin DeShazer (darv)
2008-01-16 11:35:43 CST (+0800)

It has septate hyphae that lack clamp connections. After staining in methylene blue and destaining with several water rinses twenty septa were observered and none had evidence of clamps. Flora Agaricina Neerlandica Vol. 3 says “Clamp-connections present in all tissues.” for A. lobata and “Clamp-connections absent in all tisues.” for A. retiruga.

Neat, why not lobata?
By: Douglas Smith (douglas)
2008-01-16 06:05:03 CST (+0800)

I was wondering about why this isn’t A. lobata? The difference between the two is the “clamp connections present” or not. I was wondering if you saw that they are there or not here. (Plus I’m not sure where someone is supposed to look in these to find the clamp connections, but anyway…)

Created: 2008-01-15 13:27:01 CST (+0800)
Last modified: 2008-01-15 13:27:01 CST (+0800)
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