When: 2014-05-17

Collection location: Jamor, Oeiras, Portugal [Click for map]

Who: zaca

No specimen available

Julella vitrispora is not new to me: I found it three times in the past (observation 96835, observation 110037, observation 113597) and in the Notes of the last observation I wrote “It seems a widespread species at this and neighbor locations”. Recently I found a specimen of what now I think to be another species of the genus Julella. Once arriving to this suspicion I decide to look in the neighbor places for other specimens and for samples of Julella vitrispora. I did it yesterday and today. Yesterday I found several samples of Julella vitrispora, as can be seen in the photo with the composition of the specimens observeed; Today I found other specimens of the other species (I believe) which will be considered in a forthcomming observation. Meanwhile the first specimen of that other species of Julella is to be consider in observation 165436, which I already created and soon will develop.

I have selected one of the several samples of Julella vitrispora to analyse, having in mind a comparision with the one in observation 165436.
Here are some of the conclusions obtained:
- Spot tests all negative (C-, K-, KC-);
- The thalli of all the specimens are similar and as the previously observed: continuous, more or less immersed in the substrate, whitish-greywish, dull and very smooth;
- Perithecia immersed when young and becoming only few immersed when mature;
- Involeucrum dark-brown; ascomatal wall dark brown to black, inexistent at the bottom of the hamathecium;
- Hamathecium formed by branched (pseudo?)paraphyses anastomosing at the top;
- No alga was observed;
- Asci clavate to almost cilindrical, 2 mature measured: 97 × 26 um and 103 × 25 um;
- Ascospores muriform, long ellipsoid with average dimensions: Me = 26.9 × 12.1 um; Qe = 2.2 (N=23), in the ranges: 22.5 – 30.7 × 10-13.7 um.
I attach a photo of the specimen analyzed and plenty of photos with the details of the observation.

Edited on May 19, 2014
In the above text the name Julella lactea was substituted by Julella vitrispora on the account of the following:

I decided to change the name of the species in this and my former observations on the genus Julella (observation 96835, observation 110037, observation 113597) on the account of the references I collected for this genus (see below). The matter is that all these references, are unanimous in that J. lactea and J. vitrispora only differ in the number of spores per ascus, 2 to 6 in the former and 8 for the latter; As in all my microscopic observations I found 8 spores per ascus, the correct name to apply is J. vitrispora.


1) A. Aptroot and P.P.G. van der Boom;
Strigula lateralis spec. nov. with notes on the genus Julella (Ascomycetes);
Mycotaxon 56:1-8 (1995).

2) André Aptroot, Robert Lücking, Harrie J.M. Sipman, Loengrin Umaña, José Luis Chaves;
Pyrenocarpous lichens with bitunicate asci – A first assessment of the lichen biodiversity inventory in Costa Rica;
Bibliotheca Lichenologica Band 97, 1-162 (2008).

3) Margaret E. Barr;
On Julella, Delacourea, and Decaisnella, three dictyosporous genera described by J. H. Fabre;
Sydowia, Annales Mycologici Ser. II 38:11-19 (1985).


Microscopy 5: Release of spores;
Composition of the specimens observed;
Photo of the specimen analyzed;
Microscopy 1: Perithecial section;
Microscopy 2: Perithecial section;
Microscopy 3: Inside the perithecium; A- Involeucrum, B- Ascomatal wall and exciple, C- Bottom of perithecium;
Microscopy 4: Immersed perithecia;
Microscopy 6: Asci and spores.

Proposed Names

29% (1)
Recognized by sight
Based on microscopic features
Based on chemical features
87% (1)
Recognized by sight: See the Notes.
Used references: See the Notes.
Based on microscopic features
Based on chemical features

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

= Observer’s choice
= Current consensus


Add Comment
News from the volcano!
By: zaca
2014-05-17 19:17:09 CDT (-0500)

I inserted plenty of material in this observation.

hence that website:
By: Debbie Viess (amanitarita)
2014-05-17 10:40:15 CDT (-0500)

Ways of Enlichenment? ;)

There are hallucinagenic lichens!
By: Jason Hollinger (jason)
2014-05-17 10:38:43 CDT (-0500)

I love the montage of specimens!

Created: 2014-05-17 06:15:01 CDT (-0500)
Last modified: 2014-05-19 19:02:17 CDT (-0500)
Viewed: 56 times, last viewed: 2019-07-13 05:54:20 CDT (-0500)
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