Anne Elliott

Anne Elliott

Posted on 08/21/2013

Photo taken on August 20, 2013

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NATURE et Biodiversité..! NATURE et Biodiversité..!


edge of Glenmore Reservoir
on dried mud
South Glenmore Park
Riccia cavernosa

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Riccia cavernosa Liverwort, S1

Riccia cavernosa Liverwort, S1
This afternoon, 20 August 2013, I went for a botany walk in South Glenmore Park with a couple of friends. Part of the walk was down by the edge of the Glenmore Reservoir, on the dried mud from the Flood of the Century in June. Sandy discovered this quite attractive, tiny Liverwort (non-vascular plant), called Riccia cavernosa. This species is listed as an S1, which means that it is known from five or fewer occurrences or especially vulnerable to extirpation because of other factor(s). Nicely found, Sandy! Nearby, there were a couple of pink ones, presumably the same species? This is a supermacro photo of a very small specimen that was maybe half to three-quarters of an inch across, (Sandy has a Licence to collect).

"In ancient times, it was believed that liverworts cured diseases of the liver, hence the name. In Old English, the word liverwort literally means liver plant. This probably stemmed from the superficial appearance of some thalloid liverworts (which resemble a liver in outline), and led to the common name of the group as hepatics, from the Latin word hēpaticus for "belonging to the liver". An unrelated flowering plant, Hepatica, is sometimes also referred to as liverwort because it was once also used in treating diseases of the liver. This archaic relationship of plant form to function was based in the "Doctrine of Signatures".

The greatest impact of Liverworts is through the reduction of erosion along streambanks, their collection and retention of water in tropical forests, and the formation of soil crusts in deserts and polar regions. However, a few species are used by humans directly. A few species, such as Riccia fluitans, are aquatic thallose liverworts sold for use in aquariums. Their thin, slender branches float on the water's surface and provide habitat for both small invertebrates and the fish that feed on them." From Wikipedia.

Cats 99, LeapFrog have particularly liked this photo

As you know ... when humans leave this earth, Nature will survive ... as things will grow anywhere and everywhere to cover our tracks so to speak ... great find and shot!!

PS: Your photo are still showing up before my last photo on my Contact stream prior to July 23, 2013 ... the Ipernity Team is aware of this problem, as they are working on an new "News" section ... last week I had 3 Contacts that showed up there and now there are 6 ... hope this is fixed soon ... for my limited contacts, I can get to these by scrolling back a page ... but those that have many Contacts, these 6 would be away back on their streams ...
4 years ago. Edited 4 years ago.
Anne Elliott has replied to LeapFrog
Thanks for telling me about this problem on ipernity, Art, including your previous mention (yesterday?). It's certainly not something I would have known about otherwise. Strange that this is happening, but nice to know that ipernity is aware of this problem and is "working on it". A good job I'm not one of those people who is obsessively trying to collect as many comments as they can, ha, ha! I'm just trying keep my head above water on both sites, which is a real struggle : ) I never had a reply to my e-mail to them days ago, about not being able to arrange tags in the order I want, or to edit them rather than deleting them (like you can do on Flickr).
4 years ago.