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I goofed, see Martin Schrattenholzer's comment. The only moss is in the background and hanging under the limb! That wonderful green poking out at us is a liverwort called "Tree Ruffle" aka Porella navicularis.
After rains in Whatcom Falls Park
Better large -- press "L" key
In explore Feb. 3, 2018
Porelle à feuilles larges - Wall scale-wort
Porella platyphylla (L.) Pfeiff. (port)
Tranchée ferroviaire dans du calcaire (alt. 210 m)
Modave (province de Liège, Wallonie, Belgique)
FR POrelle à feuilles larges - EN Wall scalewort
Porella platyphylla (L.) Pfeiff. (port)
Arbre vivant (alt. 130 m)
Marche-les-Dames (province de Namur, Wallonie, Belgique)
Indigène (Europe, Nord-Ouest de l'Afrique, Centre de l'Asie, Californie)
with mosses and lichens
several cyanolichens with the liverworts - some liverworts symbiotic association with cyanobacteria, but haven't found info on Asterella
academic.oup.com/jxb/article/59/5/1047/540713 - Cyanobacterial associations with liverworts are rare, being found in only four of the >340 liverwort genera, two of the associations (Marchantia and Porella) being epiphytic and two (Blasia and Cavicularia) endophytic (Meeks, 1990).
Porelle à feuilles larges - Wall scale-wort
Porella platyphylla (L.) Pfeiff. (port)
Tranchée ferroviaire dans du calcaire (alt. 210 m)
Modave (province de Liège, Wallonie, Belgique)
Evans Creek Preserve
trunk, red alder
my lichen photos arranged by genus - www.flickr.com/photos/29750062@N06/collections/7215762439...
my photos arranged by subject - www.flickr.com/photos/29750062@N06/collections
Tree Ruffle Liverwort, Porella navicularis, is thriving in our soggy December. Our local rain gauge is 2 blocks away and was at 17.36 inches for the month and the liverworts, lichens and mosses love it.
Portland, Oregon.
www.youtube.com/watch?v=sguzxWFjIZk
(porella, lei ci provava...)
Rain and tears are the same,
but in the sun
you've got to play the game.
EOS 5D 105mm Makro
25mm Ex-T.
Bach-Kahlfruchtmoos
(Cliff-Scalewort)
Typisch sind die weit herablaufenden stängelbreiten Unterblätter (P- platyphylla breiter), die an den Basisflügeln meist etwas gezähnelt sind. Das Hüllblättchen des Perianths sollte relativ glatt sein.( Bei den Bastarden ist es lang gezähnt.) Die Oberlappen werden bis zu 2mm breit, sind aber meist kleiner.
TK3712 Ibbenbüren
trunk, red alder
Evans Creek Preserve
P. navicularis at lower right
Not a lot of Graphidaceae in my area, but very large number elsewhere, e.g. from data.fs.usda.gov/research/pubs/iitf/ja_iitf_2014_Lucking0...:
Recent studies of the global diversity of the lichenized fungal family Graphidaceae suggest that there are a large number
of species remaining to be discovered. No less than 640 species have been described since 2002, including 175 new
species introduced in a collaborative global effort in a single issue in this journal. These findings suggest that the largest
family of tropical crustose lichens may have an even higher number of species than Parmeliaceae.
Our approach resulted in a prediction of
4,330 species of Graphidaceae, including approximately 3,500 (sub-)tropical species in the core subfamilies
Fissurinoideae, Graphidoideae, Redonographoideae, plus 125 species restricted to extratropical regions (outside the zone
between 30° northern and 30° southern latitude) and 700 species in subfamily Gomphilloideae. Currently, nearly 2,500
species are known in the family, including species not yet formally described. Thus, our model suggests that even after
describing 175 species in this issue and with another approximately 140 awaiting publication, the number of species still
to be discovered and described is more than 1,800, and much work remains to be done to close this substantial gap.
Based on our approach, we predict that most of this undiscovered diversity is to be found in Mexico, the northern Andean
region, the eastern Amazon and central and southern Brazil, tropical West Africa, continental Southeast Asia, Indonesia,
and Papua New Guinea
my lichen photos arranged by genus - www.flickr.com/photos/29750062@N06/collections/7215762439...
my photos arranged by subject - www.flickr.com/photos/29750062@N06/collections
Tree Ruffle Liverwort (Porella naviculars) growing on a dogwood tree in the front yard.
Portland, Oregon.
February 3, 2021.
FR Sélaginelle denticulée - EN Mediterranean clubmoss - ES Selaginela común
Selaginella denticulataSpring (port)
Vieux mur ombragé (alt. 580 m)
Las Montañas (Ténériffe, Canaries, Espagne)
Néophyte (Bassin méditerranéen)
with Porella navicularis
Theler Wetlands, Mason County, Washington
www.theguardian.com/uk-news/2020/nov/20/national-trust-re...
my lichen photos by genus - www.flickr.com/photos/29750062@N06/collections/7215762439...
my photos arranged by subject, e.g. mountains - www.flickr.com/photos/29750062@N06/collections
with Hypogymnia physodes
also moss
my lichen photos by genus - www.flickr.com/photos/29750062@N06/collections/7215762439...
my photos arranged by subject, e.g. mountains - www.flickr.com/photos/29750062@N06/collections
FR Porelle à larges feuilles - EN Wall scalewort
Porella platyphylla (L.) Pfeiff. (tige feuillée)
Falaise calcaire (alt. 170 m)
Éprave (province de Namur, Wallonie, Belgique)
Indigène (Holarctique)
Atalodoris cf. inconspicua has an elliptical outline when moving. Dark viscera are visible, and abundant tubercles give the mantle a rough appearance. The rhinophores have yellow lamellae with a few flecks of brown pigment and a white apex. Length 9 mm. Orkney. March 1975. Det. B. Picton
Full SPECIES DESCRIPTION BELOW
PDF available at www.researchgate.net/publication/359195586_Atalodoris_cf_...
Sets of OTHER SPECIES at: www.flickr.com/photos/56388191@N08/collections/
Atalodoris cf. inconspicua (Alder & Hancock, 1851)
Current taxonomy: World Register of Marine Species www.marinespecies.org/aphia.php?p=taxdetails&id=1565669
Synonyms: Doris inconspicua Alder & Hancock, 1851; Onchidoris inconspicua (Alder & Hancock, 1851); Knoutsodonta inconspicua (Alder & Hancock, 1851).
Meaning of name: Atalo = youthful, doris = name of a sea nymph, inconspicua = inconspicuous.
GLOSSARY BELOW
Preface
There is much uncertainty about the identity of the rarely found Atalodoris inconspicua and related species; hence the ‘cf.’ in the title of this account. See the ‘Discussion’ section below.
Description
Atalodoris cf. inconspicua grows up to 12 mm long. It has an elliptical outline when moving fig. 1 flic.kr/p/2n82yQG & fig. 2 flic.kr/p/2n85pka and is more discoid at rest fig. 3 flic.kr/p/2n85pjo . In profile it is a low dome.
The ample white mantle covers the whole body. It is translucent, showing obliquely aligned spicules subdorsally and blackish viscera dorsally fig. 4 flic.kr/p/2n7WczK . The mantle has a rough appearance from its numerous, nearly uniformly small, blunt, spiculose tubercles fig. 5 flic.kr/p/2n85pb7 . The mantle and its tubercles are liberally sprinkled with black freckles and minute brown spots. When viewed from directly above against black viscera, the pale tubercles may form light halos around apical brown spots fig. 4 flic.kr/p/2n7WczK .
The basal third of the stout, almost linear rhinophores is smooth and coloured as the mantle. The distal two thirds have up to fourteen closely set yellowish lamellae, often with a few flecks of brown pigment fig. 6 flic.kr/p/2n82eSz . A small, white apex protrudes above the lamellae, and may be visible as a white spot when viewed from above. The margin of the basal rhinophoral cavity has no sheath or rim, only the normal small tubercles of the mantle.
There is a ring of about ten small, unipinnate, translucent, white gills fig. 7 flic.kr/p/2n82eRH which may be black or brown distally, or suffused completely with yellow-brown fig. 3 flic.kr/p/2n85pjo . There are often black or dark brown tubercular processes within the gill ring.
The head consists of a large, semicircular, oral veil with a depression leading to the mouth fig. 8 flic.kr/p/2n82E1w & fig. 9 flic.kr/p/2n82eNw .
The sole of the foot is approximately oval with a broad, truncated anterior fig. 8 flic.kr/p/2n82E1w , sometimes recessed by the mouth fig. 9 flic.kr/p/2n82eNw . The ample mantle is much wider than the foot and, in dorsal view, usually completely conceals it; only the posterior tip may protrude a little when moving fig. 2 flic.kr/p/2n85pka . The sole is translucent white fig. 10 flic.kr/p/2n7Wcsv or yellowish fig. 8 flic.kr/p/2n82E1w . The central blackish digestive gland is approximately elliptical, narrowest at the posterior fig. 8 flic.kr/p/2n82E1w , and sometimes truncated at the anterior fig. 10 flic.kr/p/2n7Wcsv variation seems to match how the anterior of foot is disposed.
Key identification features
Atalodoris cf. inconspicua
1) White mantle liberally sprinkled with small black freckles and minute brown spots, fig. 4 flic.kr/p/2n7WczK .
2) Rhinophores have up to fourteen closely spaced lamellae with a few brown marks fig. 6 flic.kr/p/2n82eSz .
3) Approximately elliptical, blackish digestive gland fig. 8 flic.kr/p/2n82E1w .
Similar species
Atalodoris sparsa (Alder & Hancock, 1846)
1) Mantle predominately brown, peripherally dissected into blocks by light, unpigmented lines. fig. 11 flic.kr/p/2n82eKA .
2) Rhinophores have up to nine, broad, widely spaced lamellae with brown marks.
3) Orange-brown digestive gland visible through sole.
Habits and ecology
A. cf. inconspicua lives on the lower shore and sublittorally. It feeds on Bryozoa, but there is uncertainty about which species; Cellepora pumicosa in Alder and Hancock (1845-55); Cellaria sinuosa in Thompson & Brown, (1984), and Cellepora pumicosa and Porella concinna, C. Todd in Picton & Morrow (2016). Spawn is deposited on or near its prey in a tightly wound, thin, about 7 mm diameter, spiral line of about eight turns in March (Alder & Hancock, 1844-54) and May fig. 12 flic.kr/p/2n82DTT , image is not clear enough for identification of the bryozoan, but the form is consistent with Cellepora pumicosa . The white ova are two or three abreast in the spawn line.
Distribution and status
A. inconspicua is rarely recorded; the 1975 images in this account might be the first photographs of it. There are records of it from Northumbria, England fig. 2 flic.kr/p/2n85pka , southern Sweden, Brittany, Normandy (Thompson & Brown, 1984) and Orkney fig. 1, fig. 3 & fig. 4 (det. B. Picton, www.seaslugforum.net/find/onchinco ). Confusion with other species may have resulted in some mistaken records. GBIF map www.gbif.org/species/9943999 UK map NBN species.nbnatlas.org/species/NHMSYS0021528510
Discussion of species name
In 1975, I sent a photograph of a live dorid and its preserved body to T.E. Thompson and G.H. Brown, which they examined closely and identified as Onchidoris sparsa. Its radula is described, and a painting based on the photograph shown, in Thompson & Brown (1984). I sent images of further specimens to which the response was, “they do not seem to disagree in any way with the conclusion we have already come to, i.e. that it is Onchidoris sparsa”. I accepted that at the time, but the wording suggests they were not as closely examined as the earlier material.
Three decades later, when re-examining the photographs I was struck by several differences in the later photographs from the A. sparsa studied in detail by TET & GHB. I posted the images and my qualms on the Sea Slug Forum www.seaslugforum.net/find/onchinco where B. Picton opined, with detailed reasoning, “I am pretty certain that it is Onchidoris inconspicua”. The photographs in question are figs. 1, 3, 4 and 8 in this account of A. cf. inconspicua. Uncertainty remains as, though the photographs show that the mantle is “sprinkled with very minute brown spots” (Alder & Hancock, 1845-1855), they also show plentiful black freckles which are absent from the description and image in Alder & Hancock (1845-55). The only dorid with similar dark freckles in Thompson and Brown (1984) is the image of Onchidoris oblonga on Plate 15 but their description has many differences, including an orange brown digestive gland and usual length of 5 mm, exceptionally 8 mm.
The appearance of the specimens in figures 1, 3, 4 and 8 is consistent with them being one species, but their identification as Atalodoris inconspicua is tentative.
References and links
Alder, J. & Hancock, A. 1845-1855. A monograph of the British nudibranchiate mollusca. London, Ray Society. Fam.1 Plate 12, figs. 9 – 16. www.biodiversitylibrary.org/item/131598#page/138/mode/1up
Picton, B.E. & Morrow, C.C. (2016). Onchidoris inconspicua (Alder & Hancock, 1851). [In] Encyclopedia of Marine Life of Britain and Ireland.
www.habitas.org.uk/marinelife/species.asp?item=W13340 Accessed 10 March, 2022.
Rudman, W.B., 2010 (January 12) Onchidoris inconspicua (Alder & Hancock, 1851). [In] Sea Slug Forum. Australian Museum, Sydney. www.seaslugforum.net/find/onchinco
Thompson, T.E. & Brown, G.H. 1984. Biology of opisthobranch molluscs 2. London, Ray Society.
Current taxonomy: World Register of Marine Species www.marinespecies.org/aphia.php?p=taxdetails&id=1565669 (WoRMS)
Glossary
cf. = ‘compare’; can be used to suggest a possible identity, or resemblance, of a specimen with a named species.
digestive gland = large organ in gastropods which acts like the liver and pancreas in mammals to absorb food.
dorid = a sea slug in the infraorder Doridoidei; with gills and rhinophores on the dorsum; often shaped like half a lemon or grape.
lamellae = (of sea slugs) small plates on rhinophores or leaflets of gill.
mantle = (of nudibranchs) sheet of tissue forming part or all of notum (dorsal body surface).
oral veil = anterior extension of head into a flat sheet.
rhinophore = chemo-receptor tentacle; many sea slugs have a pair on top of the head.
spicule = (in dorid seaslugs) small, slender, sharp-pointed feature mainly composed of calcite, CaCO3, and brucite, Mg(OH)2 .
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Body has a low profile. Colourless, translucent, oblique, lateral spicules are indicated by black lines on this drawing from Alder & Hancock (1845-1855).
Full SPECIES DESCRIPTION BELOW
Sets of OTHER SPECIES: www.flickr.com/photos/56388191@N08/collections/
Atalodoris sparsa (Alder & Hancock, 1846)
Synonyms: Doris sparsa Alder & Hancock, 1846; Onchidoris sparsa (Alder & Hancock, 1846); Knoutsodonta sparsa (Alder & Hancock, 1846).
Meaning of name:
Atalodoris = (Greek) Young Doris (name of a sea nymph).
sparsa = (Latin) sprinkled/ splashed.
Current taxonomy: World Register of Marine Species (WoRMS) www.marinespecies.org/aphia.php?p=taxdetails&id=1565665
GLOSSARY below.
Body description
A. sparsa grows up to 8 mm long. From above it has a broad oval outline when in motion 01os flic.kr/p/XYhvtH , but is more discoid when at rest 02os flic.kr/p/WXcnfV . It has a low profile 03os flic.kr/p/XYhu48 . The mantle covers the whole body and its ground colour is pinkish white with large areas of brown pigment which may cover all the pinkish white except for the majority of tubercles and pink strap-like gaps between the blocks of brown 02os flic.kr/p/WXcnfV . The amount and intensity of brown varies; the illustration in Alder & Hancock (1845-1855) shows very little 01os flic.kr/p/XYhvtH but their illustration may have faded in over 160 years. The orange-brown digestive gland often shows through the slightly translucent mantle as a darker dorsal zone extending from the gills to the rhinophores 02os flic.kr/p/WXcnfV . The mantle surface has many small, round topped, spiculose tubercles 04os flic.kr/p/XYhtGB & 05os flic.kr/p/YbD4PB . When viewed directly from above, the tubercles often show as a pale spot outlined by brown 06os flic.kr/p/XYhrSe , occasionally, they have a central greyish spot 05os flic.kr/p/YbD4PB . The mantle is stiffened with many long, colourless, translucent, internal spicules; transverse dorsally and oblique laterally, orientated down towards the posterior 03os flic.kr/p/XYhu48 . In certain light, the spicules are externally visible 05os flic.kr/p/YbD4PB , and they may protrude from the mantle rim giving it a scaly appearance when viewed ventrally 07os flic.kr/p/XYhrpv .
The pale translucent rhinophores have a truncated apex and up to nine widely spaced, oblique lamellae which may have dark pigment 04os flic.kr/p/XYhtGB & 06os flic.kr/p/XYhrSe or not 08os flic.kr/p/XYhqVp . Around the base of each rhinophore, there are three or four large splayed tubercles; they, and a smooth patch behind the rhinophore 01os flic.kr/p/XYhvtH , 04os flic.kr/p/XYhtGB & 06os flic.kr/p/XYhrSe , are distinctly lighter, or sometimes darker, than the adjacent mantle.
There are up to 10 simply pinnate 04os flic.kr/p/XYhtGB , translucent gills, often grey-brown 06os flic.kr/p/XYhrSe arranged in a horseshoe that encloses black-brown tubercular processes and the anus.
The head has a large oral veil and a large depression around the mouth 07os flic.kr/p/XYhrpv . The foot is nearly as wide as the mantle. Its sole is translucent whitish, showing the central, elongate, orange-brown, or brownish-salmon, digestive gland 07os flic.kr/p/XYhrpv . The anterior of the foot is truncate and may have a shallow curve back from mouth.
Key identification features
Atalodoris sparsa
1) Usual maximum length 8 mm.
2) Mantle usually brown, peripherally dissected into blocks by pinkish white, unpigmented gaps 02os flic.kr/p/WXcnfV .
3) Around the rhinophore base, the large tubercles and smooth patch behind the rhinophore are distinctly lighter 01os flic.kr/p/XYhvtH , or darker, than the adjacent mantle.
4) Up to nine widely spaced lamellae on each rhinophore 04os flic.kr/p/XYhtGB .
5) Tubercles may appear as pale spots with dark outline 06os flic.kr/p/XYhrSe .
6) Orange-brown digestive gland visible through sole 07os flic.kr/p/XYhrpv .
7) Spawn a polygyrous spiral on Cellepora pumicosa and Porella concinna in August (N.E. Scotland) and possibly other months.
Similar species
Atalodoris inconspicua (Alder & Hancock, 1851)
09os flic.kr/p/WXc3s4
1) Maximum recorded length12mm.
2) Scattered random brown freckles, and often black flakes, on mantle.
4) Up to 14 close set lamellae on each rhinophore.
5) Abundant small round-tipped tubercles on mantle (not swollen or club-shaped).
7) Spawn a polygyrous spiral on Cellepora pumicosa and Porella concinna (same as O. sparsa); in March (Northumberland), May (Orkney) and possibly other months 18os flic.kr/p/WUV3o1 .
Atalodoris depressa (Alder & Hancock, 1842)
10os flic.kr/p/WUUYK9
1) Maximum length 9mm.
2) Orange/brown pigment spots arranged in longitudinal lines on mantle.
5) Long, soft, non-spiculate tubercles on mantle.
7) Spawn a polygyrous spiral, probably on Schizomavella linearis.
8) Very depressed profile.
Atalodoris oblonga (Alder & Hancock, 1845)
11os flic.kr/p/2pBeUSu
1) Usual maximum length 8 mm, occasionally 12 mm.
2) Mantle white or pale grey with a few randomly scattered brown or black blotches.
4) Up to 14 close set lamellae occupy whole length of each rhinophore apart from a very short stem.
5) Translucent conical tubercles are taller than on A. sparsa
6) Orange-brown liver visible through sole.
7) Feeds on branched bryozoan Celleria fistulosa. Spawn mass is a rounded lump on branches of C. fistulosa; not spiracular.
8) Often extends into a long form narrower than that of other similar species, but can contract into a shorter shape when it is noticeably higher in profile than other Atalodoris spp.
Onchidoris muricata (O.F.Müller, 1776)
12os flic.kr/p/XVvyvs
1) Usual maximum length 14 mm
2) Usually, no dark pigment marks on dorsal surface.
4) Lamellae on rhinophores more closely spaced than on A. sparsa.
5) Tubercles shaped as club with flat/slightly rounded tip .
7) Spawn a spiral of two or three coils on a wide variety of encrusting bryozoans.
Adalaria proxima (Alder & Hancock, 1854)
13os flic.kr/p/XVvy4f
1) Usual maximum length 17 mm.
2) Usually, no dark pigment marks on dorsal surface.
4) c. 18 lamellae on rhinophore when slug 15 mm long, more closely spaced than on O. sparsa.
5) Tubercles, torpedo shaped club with rounded point.
7) Spawn an angular spiral on Electra pilosa and some other encrusting bryozoans.
Habits and ecology
A. sparsa is usually found in the in vicinity of its food organisms under rocks on shores at ELWS, and on rock surfaces sublittorally. It feeds on the encrusting bryozoans Cellepora pumicosa and Porella concinna Breeding: Thompson & Brown (1984) stated, “Details of the reproductive cycle are unknown.”, Breeding: Thompson & Brown (1984) stated, “Details of the reproductive cycle are unknown.”, but in January 2015 and August 2017, Chris Rickard photographed specimens and spawn on Cellepora pumicosa 14os flic.kr/p/WXcg1F on sublittoral, vertical rockfaces, at c. 8 m depth, at Macduff, N.E. Scotland 15os flic.kr/p/XVvFeh & 16os flic.kr/p/WUV5pf . These may be the first recorded spawn of the species. The observed mass was a thick ribbon, attached edge-on to the substrate 08os flic.kr/p/XYhqVp , in the form of a polygyrous, unconvoluted, tightly-coiled spiral of up to nine coils 17os flic.kr/p/XVvJsw . The spawn is very similar to that of O. inconspicua which also eats and spawns on Cellepora pumicosa and Porella concinna 18os flic.kr/p/WUV3o1 . The extent of the spawning period beyond August is unknown, and it is not known if it has a planktonic veliger larval stage.
Defence: the small size, low profile, tubercles and pinkish white and brown mantle make A. sparsa difficult for predators and humans to detect it against Cellepora pumicosa. Even when located, it can be difficult to distinguish the slug from the bryozoan 14os flic.kr/p/WXcg1F
Distribution and status
A. sparsa occurs in Orkney, southern Sweden, Britain and Ireland, and Brittany (See GBIF map). www.gbif.org/species/5190118 There are scattered records around Britain and Ireland, but it is uncommon; UK NBN map species.nbnatlas.org/species/NHMSYS0021528525
Acknowledgements
I thank Jørn Ari for use of images and Chris Rickard for information and the use of his images of A. sparsa spawning; possibly the first image and record of the spawn in over 160 years since Alder and Hancock made the first description of the species.
Links and references
Alder, J. & Hancock, A. 1845-1855. A monograph of the British nudibranchiate mollusca. London, Ray Society.
www.biodiversitylibrary.org/item/131598#page/148/mode/1up &
www.biodiversitylibrary.org/item/131598#page/149/mode/1up
Thompson, T.E. & Brown, G.H. 1984. Biology of opisthobranch molluscs 2. London, Ray Society.
Glossary
lamellae = (sing. lamella) small plates on rhinophores, or leaflets of gill.
mantle = (of nudibranchs) sheet of tissue forming part or all of the dorsal body surface.
oral veil = flat anterior extension of head.
pinna = (pl. pinnae) primary element/leaflet of a pinnate gill, leaf, feather etc.
plankton = animals and plants that drift in pelagic zone (main body of water). polygyrous = (of a spiral) having many closely spaced coils.
rhinophores = (pl.) chemo-receptor tentacles on top of head of nudibranch.
spicule = (in dorid seaslugs) small, slender, sharp-pointed feature mainly composed of calcite, CaCO3, and brucite, Mg(OH)2 .
spiculose = having, or full of, spicules.
veliger = shelled larva of marine gastropod or bivalve mollusc which moves by action of cilia on a velum (bilobed flap). Stage may be passed in plankton or within liquid-filled egg-capsule.
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FR Porelle à larges feuilles - EN Wall scalewort
Porella platyphylla (L.) Pfeiff. (colonie, hébergeant un lichen)
Rocher calcaire (alt. 130 m)
Ben-Ahin (province de Liège, Wallonie, Belgique)
Indigène (Holarctique)
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Fotos para el Web Magazine The Concert in Concert (www.theconcertinconcert.com/) Festival Cadena 100 Por ellas - BarclayCard Center - Madrid - 22/10/16
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Tree-ruffle liverwort (Porella navicularis) - this kind of liverworts (speaking of its appearance) was not common in places where I used to live before. Here, this "braided" structure looks very attractive for me.
Porelle à feuilles larges - Wall scale-wort
Porella platyphylla (L.) Pfeiff. (port)
Tranchée ferroviaire dans du calcaire (alt. 210 m)
Modave (province de Liège, Wallonie, Belgique)
Fotografías del concierto de Cadena 100 'Por Ellas' 2018 con las actuaciones de Pablo Alborán, Melendi, Rozalén, Luz Casal, James Arthur, Sergio Dalma, La oreja de Van Gogh, Matt Simons, Sofia Reyes, Clean Bandit y Blas Cantó.
Estas imágenes están bajo licencia Creative Commons y no podrán ser utilizadas sin mencionar el medio al que pertenecen, ni recortando el logo de YourWay Magazine.
On a boulder, deciduous woods. Ciliate hoarmoss (Hedwigia ciliata; www.inaturalist.org/observations/123636670) & a liverwort (Porella platyphylla; www.inaturalist.org/observations/123636670).
Porella compressa
Date: 14/08/2015
Location: Madadh Beag, Loch nam Madadh
Geographic position: 57°36'19" N 7°5'52" W
Original image file size: 10-20MB (.NEF - RAW format)
Photographer: George Stoyle
© SNH. All rights reserved. Please email for details - marinephotos@nature.scot
Porella platyphyilla (L.) Pfeiff., syn.: Madotheca plytyphylla
Family: Porellaceae¸Marchantiophyta
EN: Wall Scalewort, DE: Breitblättriges Kahlfruchtmoos, Flachblättriges Kahlfruchtmoos
Slo.: no name found
Dat.: Jan. 1. 2022
Lat.: 46.36025 Long.: 13.70057
Code: Bot_1423/2022_DSC5124
Habitat: On a large calcareous boulder in light Fagus sylvatica forest with some Picea abies and Ostrya carpinifolia trees; moderately inclined mountain slope, southeast aspect; in shade, partly protected from direct precipitations by tree canopies; average precipitations ~ 3.000 mm/year, average temperature 7-9 deg C, elevation 630 m (2.070 feet), alpine phytogeographical region (M. Wraber, 1969).
Substratum: soil in rock crevices.
Place: Lower Trenta valley, between villages Soča and Trenta, left bank of Skokar's ravine above the trail from Trenta 2b to abandoned farm house Strgulc, Soča 47; East Julian Alps, Posočje, Slovenia EC.
Comments (pertains to pictures in the Flicker album Porella platyphyilla): Porella platyphyilla is quite a common, conspicuous liverwort growing in the whole temperate north hemisphere. It is complicated structured with two side rows of two-lobed leaves and a series of relatively large underleaves. All of them have at least slightly recurved margins, which offers good clues to its identification. Characteristic habitat helps also in its identification. It grows on dry places, mostly on calcareous boulders and cliffs or less often on base-rich bark or man-made walls. Not many other liverworts thrive on such places and a possible confusion, in case one finds it on calcareous boulder, is less probable. It is usually dull, dark green and somewhat messy habitus. But it changes its color drastically during rainy periods when soaked with rain and particularly when it is totally dry (see Figs. 11 and 12.).
Ref.:
(1) Paton, J.A., The Liverwort Flora of the British Isles, Brill, Leiden, Boston (2011), p 455.
(2) C.W. Smith, et all, The lichens of Great Britain and Ireland, The British Lichen
Society,(2009), p 250.
(3) Personal communication (conf.) with doc. dr. Simona Strgulc Zakrajšek, Biotechnical Faculty - University of Ljubljana, Department of biology.
(4) www.korseby.net/outer/flora/bryophyta/porellaceae/index.html
(5) www.britishbryologicalsociety.org.uk/wp-content/uploads/2...