Observation 89118: Diploschistes scruposus (Schreber) Norman
When: 2012-03-03
Who: zaca
No herbarium specimen

Notes: Observations MO89115 to MO89122 took place at an old fence inside a small village, made of the (calcareous) local stones and some soil.

Average dimensions of spores: Me = 25.5 × 13.9 µm ; Qe = 1.9 (N=38).

Proposed Names

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Recognized by sight
Based on microscopic features
Based on chemical features

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OK! Anyone has to trust on his sources.
By: zaca
2012-03-13 16:54:17 EDT (-0400)
My understanding of the sentence written in CNALH about D. scruposus:“asci: subclavate to cylindrical, (4-) 8-spored” is that the common situation is 8-spored asci and “may have some 4-spored asci” and not “must have some 4-spored asci”. The same is written in ac-lille where the chemical reactions are: “Réactions chimiques : thalle K+ jaune (parfois K-), P-, médulle C+ rouge.”, which coincide with mine (except for P, that I didn’t make).
D. scruposus ..
By: Anto (Antonio Valero)
2012-03-13 04:51:31 EDT (-0400)

tendría tambien 4 spores/Asco, no sólo 8 spores/asco.


I had that doubt …
By: zaca
2012-03-12 20:30:07 EDT (-0400)

when I start studying this as well as the other specimens that appears together with Acarospora nodulosa (see MO89121 and MO89122), because most references that I found to this Acarospora mention that it parasites Diploschistes diacapsis. However, in CNALH only reference to the genus Diploschistes appears. It seems to me that the thallus is different from D. diacapsis and the apothecia are not urceolate as in this species. In addition, the chemical reactions are consistent with previous observations of D. scruposus. Thus, I doubt this is D. diacapsis. Thanks, Antonio, for the comments.

Pienso que podría ser..
By: Anto (Antonio Valero)
2012-03-12 19:34:58 EDT (-0400)

Diploschistes diacapsis


The fence …
By: zaca
2012-03-12 18:51:42 EDT (-0400)

was an hand made construction using mainly the local (calcareous) stones, but I cannot guarantee that all are calcareous. What are you thinking about? Diploschistes ocellatus? I think that this species has a smoother thallus than my specimen and I don’t know the chemistry for this species. I already uploaded a photo with the spot tests made in site. Thanks, Antonio, for replying.

By: Anto (Antonio Valero)
2012-03-12 16:30:50 EDT (-0400)

Diploschistes scruposus en roca calcarea no parece cuadrar muy bien, es más bien de rocas siliceas.

Spot test ?


Created: 2012-03-11 16:56:19 EDT (-0400)
Last modified: 2012-03-13 18:30:01 EDT (-0400)
Viewed: 94 times, last viewed: 2017-06-10 11:36:56 EDT (-0400)
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