Observation 18985: Thyrea confusa Henssen

When: 2009-02-18

Collection location: Bovec basin, East Julian Alps, Posočje, Slovenia [Click for map]

Who: amadej trnkoczy (amadej)

No specimen available

Thyrea confusa Henssen (Th.pulvinata auct.)
Jelly strap

Lat.: 46.3471 Long.: 13.54488
Code: Bot_321/2009-6215-#171

Habitat: Vertical or slightly over hanged calcareous rock face, south oriented, occasionally wet through dripping water over rock surface, otherwise dry place, light and warm place, full sun, precipitations ~3.000 mm/year, average temperature 7-9 deg C, elevation 800 m (2.600 feet), alpine phytogeographical region.
Substratum: hard calcareous rock surface.

Place: Above Visna place, at the foot of Mt.Cukla, Bovec basin, East Julian Alps, Posocje, Slovenia EC

Nikon D70 / Nikorr Micro 105mm/f2.8



Proposed Names

57% (1)
Eye3 Eyes3
Recognized by sight
Used references: http://www.nhm.uio.no/... ,
V.Wirth, Die Flechten Baden-Wuerttembergs, Ulmer, Vol.2., p724 and 906,
Brodo, Sharnoff, Sharnoff, Lichens of North America, Yale Uni.Press, p682.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Caloplaca ochracea ?
By: amadej trnkoczy (amadej)
2009-03-02 01:39:33 MST (-0700)

Dear Debbie and Jason,

Thanks for your praise. The yellow endolithic crustose lichen next to Thyrea seems to me to be Caloplaca ochracea. A common species here around (limestone all over the place). The same as at


But, this is not at all sure. Usually its thalus is light and pale but distinctly yellow. In this pictures something gray seems to be overgrowing it. Endolithic crustose lichens are mostly still a mystery for my level of knowledge.

Warmest regards

Great find!
By: Jason Hollinger (jason)
2009-03-01 17:10:07 MST (-0700)

I would love to see one of these. Great photos! (And even better notes, wish everyone — myself included — took as much care posting observations…)

(What’s the beautiful orange endolithic crustose species behind it? Candelariella?)

lovely! like calciferous alpine seaweed…
By: Debbie Viess (amanitarita)
2009-03-01 15:21:13 MST (-0700)

Created: 2009-02-28 13:11:58 MST (-0700)
Last modified: 2009-02-28 13:11:58 MST (-0700)
Viewed: 199 times, last viewed: 2018-05-04 03:20:18 MDT (-0600)