When: 2017-08-17

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

35.8654°N 120.3047°E 511m [Click for map]

Who: J-Dar

Specimen available

On a bedrock outcrop of Monterey shale and some sandstone, in a semi-arid grassland setting.

Thalli abundant and joining to form large patches. Individual thallii sorediate, lacking apothecia, and lobate. Older material becoming covered with soredia and appearing almost leprose. Pycnidia common, darker orange than thallus.


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Interesting, thanks for the additional observations
By: Jason Hollinger (jason)
2017-09-01 13:16:34 PDT (-0700)

Helpful to know where to look for things! Up north this species seems to be restricted to sheltered deeply shaded surfaces, especially basalt. Interesting that it ventures out onto vertical surfaces where you are. Maybe it can get away with that in regions of less rain.

Vertical rock face
By: J-Dar
2017-09-01 10:17:13 PDT (-0700)

This was on a vertical rock face, north-facing, on a weathered and crumbly outcrop of shale with some of the rock seeming more sandstone like. I’ve collected this outcrop before, and have collected quite extensively in this region, and this was the first time I’ve found Caloplaca stellata. I just looked up and saw this broad diffuse patch of yellowy orange that struck me as different. Portions of my specimens are mostly leprose, but the thallus was well developed in many areas.

Very nicely developed specimen
By: Jason Hollinger (jason)
2017-09-01 08:10:23 PDT (-0700)

Was this under an overhang, completely sheltered? It is typically hard to find more than a handful of intact lobes. Specimens this well-developed are rare. Good job documenting this!

By: Pgrunow
2017-09-01 07:34:33 PDT (-0700)