When: 2017-05-25

Collection location: Monterey Co., California, USA [Click for map]

35.842°N 120.2975°W 469m [Click for map]

Who: J-Dar

Specimen available

Notes:
On hard stone composed of serpentinite and other intruded materials. This was a softball sized stone in a man-made rock pile at an old homestead. Interestingly, it was nearly covered in small Diplotomma alboatrum thallii, whereas previously I’ve only found few thallii on similar rock mixed with tons of Aspicilia, Lobothallia, Acarospora, Lecidea etc.

Thallii mostly about 1cm in diameter, effigurate to spreading, cortex whitish grey, rimose, the cracks becoming wide to create separated areoles with angular sides. Apothecia immersed becoming slightly superficial, disk black, usually with a white rim, often becoming angular with the areoles. Hymenium hyaline, hypothecium red-brown, epihymenium brown.

Spores 8/ascus, brown, muriform (8 cells), small, with blunt ends. 15.4×8.6, 16.2×8.8, 17.5×9.6, 13.8×7.6µm

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Created: 2017-06-22 05:00:26 CEST (+0200)
Last modified: 2017-06-22 05:16:51 CEST (+0200)
Viewed: 25 times, last viewed: 2019-10-09 14:11:48 CEST (+0200)
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