Observation 320719: Caloplaca Th. Fr.

When: 2017-03-15

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

Who: J-Dar

Specimen available
Collection number: Jason Dart 762

Notes:
On Quercus agrifolia in coastal oak woodland. Broad spore isthmus.

Thalli varying from thin, whitish green, continuous, to thicker white verruculose, always K-. Apothecia orange, up to 0.5mm, plane to somewhat convex, disk finely roughened (pruina?), proper margin becoming dominant, paler than disk, thalline margin with gray material, reduced. Pycnidia uncommon, dark orange, shiny.

Spores polarilocular, hyaline, ellipsoid. Spore average size13.2×7.0 (n=6), spore isthmus 5.4µm.

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Recognized by sight
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Created: 2018-06-24 19:57:40 MST (-0700)
Last modified: 2018-06-27 20:18:40 MST (-0700)
Viewed: 24 times, last viewed: 2019-08-23 13:29:38 MST (-0700)
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