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Posts Tagged ‘Eastern Speckled Shield Lichen’

You might have read in the last post that I have bought a new camera. I had a couple of quick photos I took with it that I added to that post but I always like to put a camera through its paces and see what it can do before I start using it for day-to-day blogging, and that’s what this post is about. I was happy to see what it can do with window frost in microscope mode. This is one of the best shots of frost I’ve ever taken. I love seeing things like this that are right there in plain sight but are rarely seen. How something so flat can look so 3 dimensional I don’t know, but it was beautiful.

These frost crystals were on the mirror of a truck. I’ve never seen them grow curved like this. The detail was so fine It was as if they had been etched into the glass.

To think that something so beautiful could live on the mirror of a truck. It’s a good example of why I always try to be aware of my surroundings and look closely at whatever is near. You never know what you might see. Life life has put beauty in our path at every turn but if we don’t see it, we have only ourselves to blame. Because this was a mirror you can see the reflection of the camera lens behind the crystals in some of these shots. It’s a bit distracting but there wasn’t any way to hide or camouflage it.

Here was another curvy frost crystal on a mirror. They’re very beautiful but also delicate; one warm breath or a ray of sunlight and you’ve lost your subject.

This shot is of sunlight coming through a frozen jelly fungus, which is always a hard shot. I should have tried for better depth of field. If you ask it to, this camera will use photo stacking to improve depth of field, and I’ve heard that it is amazing. I’m going to have to try it.

This small icicle was full of bubbles and it was also smaller in diameter than a pencil. This camera really excels at macro photography and since that’s what I bought it for, that was what I was most interested in.

This is the midrib of a feather.

Here was the seedhead of a purple coneflower. Birds, I’d guess finches, had been eating the seeds and revealed the beautiful spirals hidden inside.

I saw a cocoon of some sort on an old door where I work. It was cottony and full of holes, and as big around as my finger and maybe an inch and a half long. I saw what looked like tiny flies on it. If you know what insect made it, I’d like to know.

Whatever they were they were too small to get a good shot of, even in microscope mode. I don’t know if they came from this cocoon or were just stuck in its wooliness. In any event they were no longer alive.

I’ve been trying to get this shot looking down a beech leaf off and on since last fall and the new camera pulled it off with ease, though the depth of field could have been better.

The last Olympus camera I had, the Stylus TG-870, wasn’t worth much when it came to landscapes, at least in my opinion, so I wanted to test its zoom capabilities. This oak leaf frozen in the ice was shot at full zoom in auto mode. I thought the camera did a fair job of it.

This shot of dry rot on a standing dead tree was shot in microscope mode from about 4 inches away. I was surprised because I thought you had to be closer to the subject to use microscope mode. This camera hs two macro modes and three microscope modes and you can get as close as 1 cm. The missing piece of wood was about as big as an average postage stamp and for microscope mode that’s huge, so I probably didn’t need to use it.

I found a tree full of lichens. This is where I would need microscope mode again.

My first choice was a beautiful star rosette lichen (Physcia stellaris.) It was maybe three quarters of an inch across. It was cold at about 20 degrees F. and this lichen was in the shade. Now that I see the photo it looks like there was frost on the apothecia.

I think this was the Eastern speckled shield lichen (Punctelia bolliana.) According to what I’ve read it grows on the bark of deciduous trees, has a bluish gray body with large brown apothecia, and has brown to black dots (pycnidia) on the surface of the body. I think this one checks all of those boxes.

I would call this color bright red but the Eastern speckled shield lichen’s description says the apothecia should be brown, and my color finding software sees rosy brown, so I can’t argue. What you see here averages about .08 to .12 inches across. I don’t think I’ve ever been able to get this close to a lichen and I don’t know of a DSLR lens that could.

This shot of a smoky eye boulder lichen is another example of what microscope mode will do. I never knew this lichen’s apothecia sat on top of the body (thallus) in that way. I’m going to have a lot of fun using this camera but I should take a little more time and use a tripod. I also want to try stacking in microscope mode. It will stack as many as 7 shots together for amazing depth of field.

These are the bracts that the flower petals come out of on a witch hazel. They are tiny little cups that I could barely see, but the camera found them. I hope to see petals on the spring blooming witch hazels soon.

This camera’s lens is an F 2.0, which is considered a “fast” lens. That means it has good light gathering capabilities due to a larger aperture, so I tested it one recent early morning at this stream. I’ve had to lighten the photo just a bit but at full zoom in what was barely dawn, it did fairly well for a point and shoot camera that is smaller than a 3 X 5 card. All in all so far, I’m really happy with it and I think I’m going to have a lot of fun with it. The fact that it will do landscapes is a pleasant surprise. In case you missed it in the last post, the camera is an Olympus TG-6. It is a field camera that many scientists use in the field because it is so tough. It is water, dust and shock resistant, heat and cold resistant, and it takes incredible photos, either on land or under water. If you’re interested in macro photography this is a relatively inexpensive camera that will take you anywhere you’d care to go.

The camera is an instrument that teaches people how to see without a camera. ~Dorothea Lange

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When the snow is piled high and it seems like anything of any interest is buried under it I go to the woods and look at the trees. They’re never buried and they always have something fascinating to show me, like lichens. Lichens will grow on just about anything including glass, but this post is devoted to those I’ve found on trees.

The yellow on the trunk of the tree in the previous photo I believe is made up of fringed candle flame lichens (Candelaria fibrosa) like that seen above, but I’m not a lichenologist and I don’t own a test kit or microscope, so don’t hold me to it. This lichen must like a lot of water because I see it a lot on the lower parts of trees that grow near irrigation systems, with trunks that are almost always wet in warmer months. This lichen always reminds me of scrambled eggs.

What prompted me to do this post was a visit to the doctor’s office. I walked past a tree that had bushy green things all over it and luckily I had my camera with me, so I ran back and took a few quick shots before the appointment. This is the first time I’ve seen anything like this.

It has taken quite a while to figure out what this lichen might be called but its green body (thallus) with flattened strap like branches and white fruiting bodies (apothecia) have led me to finally settle on the tufted ramalina lichen (Ramalina fastigiata.) A lichen guide from 1902 says this lichen is “very common in New England” but I’ve never seen it. It is also apparently very common in the U.K.

This is an odd lichen with large apothecia that look like they just erupt anywhere on the body but also look like they are stalked, depending how you look at them. Some are convex and some concave and some have rims and some don’t. The white apothecia are reproductive structures where the lichen’s spores are produced. This is a very interesting lichen that I hope to see more of without having to visit the doctor.

The doctor’s trees were full of surprises. I almost made myself late taking photos of the tufted ramalina so I went back later and looked the trees over a little more closely. When I did I found another lichen I had never seen; the Eastern speckled shield lichen. According to what I’ve read it grows on the bark of deciduous trees, has a bluish gray body with large brown apothecia, and has brown to black dots (pycnidia) on the surface of the body. This lichen has all of that but what it doesn’t have that I could see are white, grainy bits called psuedocyphellae so I can’t be 100% sure of my identification. If you know more about this or any of the lichens seen here I’d love to hear from you.

Common greenshield lichen (Flavoparmelia caperata) is indeed very common. It’s a large lichen and colonies of them often grow to cover entire trees. Older ones wrinkle like the example seen here. Like many lichens they change color, and go from grayish when dry to yellow green when wet. This example had just been rained on a day or two before I took the photo but was still dry, so it doesn’t take them long to dry out. This lichen also taught me that many lichens prefer growing on the shady side of trees, presumably so the sun doesn’t dry them out quite so fast.

If you saw what looked like blue eyes near the greenshield lichen in the previous photo they were just the apothecia of the star rosette lichen (Physcia stellaris) seen here. The apothecia of this lichen are actually dark brown but they have a powdery wax coating that can cause their color to change depending on the light. Plant parts with this powdery waxy coating are said to be pruinose and a good example of it is the “bloom” on blueberries, grapes, plums, and other fruit. The coating reflects light and protects what it coats from the sun. Depending on the angle of the light these apothecia can appear blue, gray, brown or black. That’s why it pays to visit lichens several times.

I was shocked to find a tree with hammered shield lichens (Parmelia sulcata) all over it, because my experience up to this point has shown it to be on the rare side here. There didn’t seem to be anything special about the deciduous tree they were on, but it was in a sheltered spot. Hammered shield lichen is said to have a large variety of named varieties and forms, so it can be tough to pin down.

Hammered shield lichens are silvery gray and their many sharp ridges and depressions makes them look like they’ve been hammered out of a piece of steel. Fruiting bodies are said to be rare and I’ve never seen them. It is said to have powdery, whitish soredia but I’ve never seen them either. This one had granular bits that looked like soredia on its lobe edges but they were gray, so maybe it’s one of the aforementioned varieties.

Poplar sunburst (Xanthomendoza hasseana) is a very pretty lichen but it isn’t very common, in my experience. It’s a good one to study because it has large apothecia that are almost always present. A close relative of this lichen, the elegant sunburst lichen, was sent into space and exposed to ultraviolet radiation, cosmic radiation, and the vacuum of space for a year and a half.  When it was brought back to earth it grew on as if nothing had happened, and that’s why many believe lichens are virtually indestructible and are therefore as immortal as any earth based life form can be.

Some lichens prefer growing on smooth barked trees but others don’t seem to care and will form themselves to whatever shape the bark they grow on happens to have. What I think is a rosy saucer lichen (Ochrolechia trochophora) had done just that and was bowl shaped, but still happily producing spores.

Shrubby little beard lichens are fruticose lichens, and fruticose lichens have upright or pendulous branches. I think this one is a bristly beard (Usnea hirta.) Though it grew on the shadier side of a tree it was caught in bright sunlight, and I’d guess that it must get an hour a day. One way beard lichens reproduce is by fragmentation. Pieces break off and are carried by the wind or maybe animal fur to another spot to colonize. There are many of these high up in the trees and they come down, often still attached to the branch they grew on, during a good wind. I’ve found as many on the ground as I have on trees.

This is an extreme close up of a different beard lichen showing its granular soredia, which are another means of reproduction. A soredium is a tiny granular ball of fungal hyphae and algal cells. They can grow on the body of the lichen or on its margins. No matter what living thing you find in nature, it’s always about the continuation of the species, and the drive to survive seems very strong in all of the things I see.

I think this lichen is a powder edged ruffle lichen (Parmotrema stuppeum) because of its uniform gray color, broad rounded lobes with erect edges, and soralia on the lobe edges. Soralia are groups of soredia meant to fall or break off a lichen and are used as a vegetative means of reproduction. They are what makes this lichen’s lobe edges look like they were dipped in powdered sugar. This lichen also has dark brown to black undersides but they aren’t seen in this photo. It was about as big as a penny, or about 3/4 of an inch across.

Some lichens might look like they have little spiders on them, or maybe as if they had been carved with a pocket knife but no, the squiggly lines are the apothecia of the script lichen (Graphis scripta.) This lichen prefers trees with smooth bark and, from what I’ve seen, only produces spores in winter. You can walk right by a tree full of script lichens in summer and see only grayish spots with no apothecia at all. In fact many lichens seem to prefer winter for spore production and I’ve never been able to find out why.

Beautiful in its simplicity is the maple dust lichen (Lecanora thysanophora.) Plain and undressed without the fussiness of other lichens, it makes me think I could just stand and stare at it, warmed by its calm, clean lines. But how does it reproduce? I’ve never seen any reproductive structures of any kind on it so I had to look it up. The answer is that it does have apothecia, but very rarely. It also has “a thin patchy layer of soredia,” though I’ve never noticed it. The white fringe around the outside is called the prothallus and using it is a great way to identify this lichen, because from what I’ve read there isn’t another that has it.

I hope you’ll go out and look at the trees in your neighborhood. You might be very surprised by what you see.

I find myself inspecting little granules as it were on the bark of trees – little shields or apothecia springing from a thallus – such is the mood of my mind – and I call it studying. ~ Henry David Thoreau

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