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Exsertotheca crispa; Crisped Neckera   

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Exsertotheca crispa
Exsertotheca crispa
Crisped Neckera
Photographer: Dr. Amadej Trnkoczy

ID: 0000 0000 0223 0334 (2023-02-08)

Copyright © 2023 Dr. Amadej Trnkoczy

  • date of photo  May 19, 2021
  • latitude 46.35712   longitude 13.70199     View on Google Maps.
  • location   Lower Trenta valley, between villages Soča and Trenta, left bank of river Soča, about 150 m upstream from the bridge leading to Matevž farmhouse, Trenta 1, East Julian Alps (Posočje, Slovenia)
  • family Neckeraceae
  • notes   Slo.: zgrbljeni zavesar - syn.: Neckera crispa Hedw., Neckera pseudopennata (Warnst.) Scjlieph. & Zmuda. - Habitat: dry stone fence, north aspect; calcareous, limestone or dolomite rocks; mostly in shade; humid air place, close to river bed; exposed to direct precipitations; average precipitations ~ 3.000 mm/year, average temperature 6-8 deg C, elevations 535 m (1.760 feet), alpine phytogeographical region (M. Wraber, 1969). - Substratum: gaps in a dry stone fence. - Comments (pertains to pictures in the Flicker album Exsertotheca crispa): Exsertotheca crispa is a pleurocarpous moss. That means that capsules are borne on short, lateral branches. Therefore, they emerge mid stem and not at the tips of stems or branches as with acrocarpous mosses. The species is large; the longest shots can be well over 10 cm long. Capsules are relatively rare (see Fig. 22b for some). Distinctive traits of the species are glossy (whether moist or dry!) and strongly, transversely undulated leaves and wide, distinctly flattened shots. They offer a strikingly handsome look, particularly under an appropriate angle of in falling light. - Generally, the main substratum according to literature are calcareous rocks and boulders and, much less common, bark of the trunk base of trees. In rare occasions it can be found also on ground. Yet, in the Trenta valley this is different. Finds on rocks (although nearly all rocks and boulders in the region are calcareous) are relatively rare compared to extensive occurrences of Exsertotheca crispa on tree bark in the small patches of riparian forest along the river Soča. In these very humid places Exsertotheca crispa grows on lower parts of living and dead Picea abies (which are the dominant species in this habitat) and other trees. The trunks are often thickly covered by this moss from ground to sometimes well over 2 m height. - The pictures in this album show Exsertotheca crispa on three substrates: on forest ground (Figs: 1 - 3.), on dry stone fence (Figs: 10 - 13.) and on tree bark (Figs: 20 - 24.). - Ref.: (1) M. Nebel, G. Philippi, eds., Die Mosse Baden-Wurttembergs, Band 2., (2001), Ulmer, p 230. (2) M. Lüth, Mosses of Europe – A Photographic Flora, Michael Lüth, Vol. 3., 2019, pp 1302. (3) Ian Atherton, Ed., Mosses and Liverworts of Britain and Ireland - a field guide, British Bryological Society (2010), p 680. (4) (accessed Feb. 05. 2023)
  • camera   Nikon D700 / Nikkor Micro 105mm/f2.8
  • contributor's ID #  Bot_1369/2021_DSC3017
  • photo category: Plant - mosses/etc

  • common names   Crisped Neckera (photographer)
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  • The photographer's identification Exsertotheca crispa has not been reviewed. Click here to review or comment on the identification.

    Using this photo   The thumbnail photo (128x192 pixels) on this page may be freely used for personal or academic purposes without prior permission under the Fair Use provisions of US copyright law as long as the photo is clearly credited with © 2023 Dr. Amadej Trnkoczy. For other uses, or if you have questions, contact Dr. Amadej Trnkoczy amadej.trnkoczy[AT] (Replace the [AT] with the @ symbol before sending an email.)


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