I tugged on what I thought was a black locust twig (Robinia pseudoacacia) stuck in the snow but I quickly found out it that was still attached to the stump by dragging the side of my hand over its thorns. Yes, those thorns are every bit as sharp as they look. To be botanically accurate, they are actually stipules. A stipule is a growth that appears on either side of a leaf stalk (petiole.) In the case of the black locust these stipules have been modified into sharp spines, so that makes them stipular spines.
If the stipular spines don’t convince you that you’re looking at a black locust, the flat seed pods will. These dark brown pods stay attached to the tree and their color lightens during the winter. Finally as spring nears they begin to fall and, though they are light and can be blown long distances, many can be found under the tree on top of the snow, as the photo shows. The tiny brown seeds look like miniature beans. Their coating is very tough and black locust seeds can remain viable for many years.
Another locust that I see regularly is the honey locust (Gleditsia triacanthos), which in my opinion bears the king of all thorns. These thorns are big and as hard as iron. They can reach 6 inches in length and poke right out of the bark of the tree along its branches and sometimes even the main trunk. They are tough enough to puncture shoe soles and I always watch my step when I walk under one of these trees because thorns like these can cause a nasty wound. Confederate soldiers once used them to pin their uniforms together and survivalists still use them as fish hooks, spear heads, nails, sewing needles and even small game traps.
I wondered what could have created these perfectly round holes on this dead white pine log (Pinus strobus). They weren’t in the usual neat rows that a sap sucker makes and anyway they were much larger than sapsucker holes. Each hole was about 3/8 inch in diameter and after some Googling I found that an invasive horntail called the Sirex woodwasp (Sirex noctilio) likes pine trees and makes exactly these kinds of holes. But it hasn’t been found in New Hampshire yet, so it was back to more Googling. The Asian long horned beetle (Anoplophora glabripennis) is another invasive species that makes holes just like this but it only attacks hardwoods, so again it was back to Google. Finally I found that a native beetle called the white spotted pine sawyer (Monochamus scutellatus) makes holes in weak and damaged white pines but I couldn’t find a good example of its hole, so I really don’t have an answer.
Being an engineer by trade these days I’m fascinated by any creature that could make such a perfectly round hole. Maybe I should have poked around in there. The photo makes it look like something might have been at home. If you know what makes holes like this I’d love to hear from you.
It might be spring but the “winter” mushrooms are still going strong. One of my favorites is the milk white toothed polypore (Irpex lacteus,) which in my experience is hardly ever really milk white. Its teeth lean more towards tan or yellowish brown. The teeth start life as tubes or pores in the spore bearing surface, which breaks apart with age to become tooth like as the above photo shows. This crust fungus is common on fallen branches and rotting logs.
I found this native northern maleberrry (Lyonia ligustrina) shrub growing between two highbush blueberry shrubs on the river bank. Maleberry is sometimes called male blueberry because the flowers look much like blueberry flowers, but the fruit of the two bushes is very different. The fruit on this bush is a hard, woody, 5 part seed pod. Maleberry fruit is said to make a good insect repellant, but you have to get them before they become hard and woody. Native Americans used its straight young stems to make bows, so its wood must be quite strong, flexible, and elastic. It is said that the wood also makes good fence posts but I’ve never seen a maleberrry branch that was big enough in diameter to be used for one.
Maleberrry is one of the easiest of all our native shrubs to identify in winter because its seed pods persist until spring. I just look for the star. There’s a very good chance when you find a maleberrry that there will be blueberries growing nearby.
The first insect I’ve seen since last fall was a winter stonefly. This one was living up to its name by resting on top of a granite post near the Ashuelot River. Its nymphs live beneath rocks and gravel on the bottom of streams and rivers. When the adults emerge they can be found along river and pond banks all winter long, so they are not a good indicator of spring. The adults feed on blue-green algae and the nymphs on aquatic plants. Hungry trout love to eat the nymphs and fishermen use them as live bait.
Willows have just started showing their furry gray catkins and if we hadn’t plunged back into another cold snap it wouldn’t have been too long before we saw their flowers. The cold we’re seeing now will hold them back for a while but it won’t hurt them any. Willows are a spring favorite that many of us enjoy seeing but they’re famous for clogging any type of piping with their moisture seeking roots, so they should never be planted close to a house. They’re great for planting along stream and pond banks because their extensive root systems help hold the soil in place.
The spring blooming witch hazels in a local park that I visit have been slow to unfurl their strap shaped flower petals, but if you look closely you can see that the bud scales are opening enough to show the 4 bright yellow petals tucked up into the buds. Spring witch hazels often make the mistake of blooming too early and their flower petals turn brown because of damage from the cold, but not this year. Each bud in this photo is about as big as a small pea.
Speckled alder catkins are just showing signs of producing pollen, as the greenish smudges on the larger male catkins in this photo shows. Soon the bud scales will pull back and the flowers will open. Spring is happening but right now you have to look around a bit to see it.
The one plant that tells me that spring is really here is skunk cabbage (Symplocarpus foetidus). It doesn’t waste time worrying that it might be too cold; it just raises its internal temperature and melts its way through the ice and snow and shouts that spring is finally here. I don’t know if the black bears are coming out of hibernation yet but if they are they’ll be happy to see skunk cabbages. It’s often the only food available to them in early spring.
You can just see the rounded greenish yellow flower head through the opening in the red and yellow mottled spathe on this one. This plant is called skunk cabbage for a good reason, and it is thought that its odor attracts pollinators like flies, stoneflies and bees. Since skunk cabbage can raise its internal temperature by as much as 35º F above the surrounding air temperature, it is also thought that warmth might be another reason that insects visit them.
Spring is sooner recognized by plants than by men. ~Chinese Proverb
Thanks for stopping in and happy spring!
Note: Today marks the start of the fifth year of this blog. I’ll take this opportunity to say that I appreciate your continued interest and I thank you very much for taking the time to read about what I think is important, and for leaving such thoughtful and often very helpful comments.
Allen
New Hampshire Garden Solutions 