Observation 218057: Rhizocarpon Ramond ex DC.
When: 2015-10-03
Who: zaca
No herbarium specimen

Notes: Growing on the thallus of Pertusaria pseudocorallina, which grew on siliceous rock.
This is the smallest fertile Rhizocarpon I ever saw: it measures about 5 mm in diameter; there are only two round apothecia, the biggest with about 1mm in diameter and the areolae are of similar dimensions.

Images

562059
562053
562318
Microscopy: Apothecial sections;
562319
Microscopy: Apothecial section and its K reaction (almost no change);
562321
Microscopy: Young spores;
562322
Microscopy: Spores with few septa;
562323
Microscopy: Spores with many septa.

Proposed Names

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Comments

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Microscopy added.
By: zaca
2015-10-08 15:54:18 CDT (-0400)

Spores:
(17.8) 19.6 – 26.8 (29.3) x (10.8) 10.9 – 14 (16.5) µm
Q = (1.6) 1.65 – 2.3 (2.5) ; N = 30
Me = 23.4 × 12.3 µm ; Qe = 1.9 .

Created: 2015-10-07 19:04:08 CDT (-0400)
Last modified: 2015-10-08 15:53:45 CDT (-0400)
Viewed: 16 times, last viewed: 2015-10-26 11:07:11 CDT (-0400)
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