Observation 102237: Lecidella stigmatea (Ach.) Hertel & Leuckert

When: 2011-09-28

Collection location: Castro Crest, Malibu Creek State Park, Los Angeles Co., California, USA [Click for map]

34.0803° -118.7473° 635m

Who: Jason Hollinger (jason)

Specimen available

HABITAT oldgrowth chaparral and conglomerate outcrops at top of high transverse ridge; SUBSTRATE north face of conglomerate outcrop on top of ridge; ASPECT shaded; NOTES whitish subsquamulose crust, clustered flexuous lecideine apothecia, rims black thin even contorted, disks blackish red brown epruinose contorted, thallus K+y C- KC- UV- 350-375nm, epihymenium brown POL- clearing in K?, exciple of densely radiating hyphae and opaque to brownish toward margin, algae underneath apothecia, hymenium and hypothecium hyaline, exciple and hypothecium finely POL+ clearing in K, paraphyses well-branched and not separating easily even in K, asci with KI+ blue thollus and KI- tube?; SPORES 8 per ascus, simple, smooth, hyaline, irregularly ellipsoid with 1-few oil drops, 10-15 × 4-7 µm (mostly immature?).


Large very-rugose shaded patch.
Large very-rugose shaded patch, closer.
Scattered apothecia, at 10x, stacked.
Apothecia, at 30x, stacked.
Apothecial section, in water, at 100×.
Apothecial section, in water, at 100x, cross-polarized.

Proposed Names

29% (1)
Recognized by sight

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Just a cheap-o dissecting microscope and a point-and-shoot
By: Jason Hollinger (jason)
2016-01-23 21:27:31 CST (-0500)

I think this was the setup shown on my profile page. I’ve gotten really good at holding the camera perfectly stable while taking a few dozen photos, each focused slightly closer than the last. There is software that will stitch these “stacks” of photos together into a single high-depth-of-field photo. There are far, far better rigs out there, but mine cost… $0! ;)

What do you use to get the close-up pics on these?
By: James Bailey (Silversea_Starsong)
2016-01-23 21:15:14 CST (-0500)

Personally interested…

Created: 2012-07-20 02:14:52 CDT (-0400)
Last modified: 2015-10-05 18:58:35 CDT (-0400)
Viewed: 81 times, last viewed: 2017-06-13 09:35:51 CDT (-0400)
Show Log