Anne Elliott

Anne Elliott

Posted on 08/11/2013


Photo taken on August 10, 2013


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Keywords

nature
at edge of lake
Bow Glacier Trail
Highway 93
Pressia quadrata
Liverwort
Marchantia
Bow Lake
Banff National Park
Alberta
Canada
bryology
Narrow Mushroom-headed liverwort
B. Preiss, 19th century physician
supermacro
Marchantiaceae


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Pressia quadrata Liverwort

Pressia quadrata Liverwort
I am SO tired after a wonderful day in the mountains today! I don't get out there very often at all, and certainly not as far as we went today, so it was an absolute treat! Friend Sandy had found an interesting, tiny Liverwort there (seen in my photo) very recently and wanted to go back to see it at a different stage, hoping it would make ID a little clearer. She asked if I wanted to go with her - ha, yes, you bet! We went past Banff and Lake Louise, as far as Bow Lake along Highway 93. They do say that this scenic highway is the most beautiful in the world, and it's easy to believe.

"The Marchantiophyta i/mɑrˌkæntiˈɒfɨtə/ are a division of non-vascular bryophyte land plants commonly referred to as hepatics or liverworts. Like other bryophytes, they have a gametophyte-dominant life cycle, in which cells of the plant carry only a single set of genetic information.

It is estimated that there are about 9000 species of liverworts. Some of the more familiar species grow as a flattened leafless thallus, but most species are leafy with a form very much like a flattened moss. Leafy species can be distinguished from the apparently similar mosses on the basis of a number of features, including their single-celled rhizoids. Leafy liverworts also differ from most (but not all) mosses in that their leaves never have a costa (present in many mosses) and may bear marginal cilia (very rare in mosses). Other differences are not universal for all mosses and liverworts, but the occurrence of leaves arranged in three ranks, the presence of deep lobes or segmented leaves, or a lack of clearly differentiated stem and leaves all point to the plant being a liverwort.

Liverworts are typically small, usually from 2–20 mm wide with individual plants less than 10 cm long, and are therefore often overlooked. However, certain species may cover large patches of ground, rocks, trees or any other reasonably firm substrate on which they occur. They are distributed globally in almost every available habitat, most often in humid locations although there are desert and arctic species as well. Some species can be a nuisance in shady green-houses or a weed in gardens." From Wikipedia.

en.wikipedia.org/wiki/Marchantiophyta

Cats 99, Wolkenrose, Jim Boynton, LeapFrog have particularly liked this photo


8 comments - The latest ones
LeapFrog
LeapFrog
Unique translucent stem ... excellent find, even though you had to travel quite a distance. Weird texture too ... excellent shot of this Anne ...

linnet.geog.ubc.ca/ShowDBImage/GalleryMobile.aspx?gr=liverworts&specrep=1&st=0
4 years ago.
Anne Elliott has replied to LeapFrog
Thanks so much, Art, for generously (as always) searching for and posting a link. After doing her research on collected specimens (she has a Permit for collecting) back at home, friend Sandy has just posted the ID and info below.
4 years ago.
LeapFrog has replied to Anne Elliott
Haha ... the "Pressia quadrata" is listed in the link ... it has 57 photos so I can say that I was 1/57 th correct ... LOLOL!! Too bad it was not the rare one ... thus the hunt continues!!
4 years ago.
S. Davis
S. Davis
Unfortunately our find was not the rare species I had hoped for, but still a great find. This liverwort is Pressia quadrata, which the BBS (British Bryological Society) calls Narrow Mushroom-headed liverwort. They also mention that the thallus (body of the liverwort) has a distinctively hot taste when nibbled on the tip of the tongue! Well I had to try that and didn't notice any heat. Preissia is named in honour of B. Preiss, a nineteenth century physician from Prague. Quadrata may refer to the 4 cells in each white rounded pore on the thallus surface, that protrude into the pore making a cross-like opening. It may also refer to the usually 4 lobed angular sporophyte.
4 years ago.
Anne Elliott has replied to S. Davis
Wonderful, detailed information, Sandy! I'm sure Art would enjoy reading this, too, if he happens to see it. He's always so generous with his helpful links! I'll copy and paste the information you've given me to Flickr, as well. Sorry to hear that this Liverwort that you found was not the rare species you had hoped for, but still an interesting find. I know nothing about Liverworts, but I was still excited to see and photograph this one, though I'm sure I'll never remember its name : )
4 years ago.
Jim Boynton
Jim Boynton
Don't know quite why, but this image really hit me. Love it! I am continually amazed at the fountain of knowledge we call Art. He must have a laptop surgically implanted on his body.
4 years ago.
Anne Elliott has replied to Jim Boynton
How right you are! However, it's not just that Art is very smart and knowledgable, he is also very generous with his time, searching fof IDs and info for everyone. Certainly is much appreciated.
4 years ago.
Cats 99
Cats 99
What cool colours it has!
4 years ago.