Sphagnum moss (Sphagnum sp.) in Chattahoochee National Forest, GA, USA
by Alan Cressler
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Time for our non-vascular plant friends to get some love!
Today's plant is: some kind of Sphagnum!
Sphagnum is the primary contributor to peat deposits in bogs and fens worldwide. These wetlands have made a name for themselves in the last few years as both a quirky internet thing and as globally significant carbon sinks.
While sphagnum is known for being in bogs and fens, species of it grow in all kinds of habitats, provided there's a regular source of moisture. Case in point: I found these funky lil guys on a granite shelf on the side of a mountain in full sun!
You can tell this is sphagnum because of the spherical spore capsules and pyramid-shaped and tightly clustered capitulescence (fancy botany word for the top of the moss). I think they look a little bit star-shaped. These specimens were mid-spore release. All the brown dooblies on little green bracts are the spore carrying gametophytes.
Extra fun facts:
Sphagnum are really cool because they have something called "explosive dehiscence", which means their little spore capsules propel the spores by literally exploding open. I could actually hear them going off in the sun!
Sphagnum can hold 16 to 26 times their dry weight in water because of a matrix of large, empty, "dead" cells called hyaline cells. These cells have a pore that allows them to efficiently take on water — like little water jugs!
*I don't have a species ID for this because I was a) on national park property and don't have a permit to collect bryophytes and b) I frankly wouldn't have collected regardless because sphagnum ID is so! hard! And while I'm glad I know how to do it if need be, I don't do it recreationally--my hands are too shaky for microscopy and the keys are insane.
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Reskinning creachers for my dnd character Cyphe to summon. She’s a necromancer for plants Paleobotanist! I’ve redone her spells with some botany flavor except the conjure/summon ones.
My methods: buy manual on trees and shrubs w 10,000 species. Read through all the A’s. Pick some cool ones, turn ecology into character notes. I need to mod these a bit with my dm.
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This is for science; I want to know how many people know what moss is!
Please reblog when you vote and indicate your reasoning in the tags or comments! I'm trying to see what a good avenue for outreach would be.
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Polytricum Moss (Polytrichum spp.) growing through a bed of red Sphagnum Moss (Sphagnum spp.) in blanket bog
Photo by Alex Hyde
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Beavers blocked this stream so the stagnant water became dark with tannins
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ROUND 5: SPHAGNUM MOSS (greem) VS BUGS (bunny)
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Cursed Moss Fact #001
Peat bogs in Finland regenerate as slowly as 10cm (about 4 inches) PER THOUSAND years. So when ‘mining’ peat, regeneration is discussed on a geologic time scale. Sphagnum (aka “peat moss”) is a genus of moss that occupies 1/3 of all land (or about 3% of the total earths surface). Note, some peat has no Sphagnum, or is made of other mosses and detritus.
One peat bog in the Catskills is between 14,700 and 15,100 years old (source).
The peachy-yellow and pink moss in the photograph is Sphagnum growing in a mini-bog in a greenhouse. Read more about mosses in Bryophyte Ecology by Janice Glime (link on pinned post on our main page)
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