Now, you might be thinking, don’t all those ferns look alike? They form a lovely verdant backdrop to the forest, but they don’t have the showy flowers and distinctive leaves that make other plants so easy to identify. But ferns are surprisingly easy to tell apart. And once you know the names of a few species, they’ll pop out at you as you wander along forest paths. » Continue Reading.
Posts Tagged ‘Botany’
Last fall, I went to a nearby wetland with a pair of clippers and cut twigs from one willow shrub after another. It wasn’t hard to tell the willows from the non-willows because willows are the only woody plants in this area whose buds are covered by a single bud scale.
These cute, pointy caps are very different from the overlapping scales that protect most buds through the winter. And the few woody plants with no protective scales are easily recognizable: their naked, embryonic leaves rely on a coating of woolliness to keep them from desiccating or freezing. » Continue Reading.
In any sugarbush, there is a good chance that a fungal intruder has gained entry and is wintering unseen beneath the rich, dark bark of an unlucky sugar maple. If this invader is sapstreak disease, then death is likely to soon claim a valuable sap producer. » Continue Reading.
Winter is a hard time for wildlife. It brings deep cold, leafless terrain, and a shortage of food and water. Animals have few choices. Most songbirds abandon the region via a perilous migration to warmer climates. Other creatures hunker down in hibernation. But there are a number of species that remain active all winter.
This is no easy task. Mammals and birds must maintain their body heat by burning (metabolizing) their body fat – or perish. » Continue Reading.
Several weeks ago, it was reported in the Almanack that the Adirondacks might be a potential location for mountain lion reintroduction. Over the past few decades, various types of wildlife have been restored to their former numbers in the Park, and over the past several centuries, many non-native species of flora and fauna have become established, either accidentally or on purpose in our environment.
During this present century, there will undoubtedly be a massive influx of life forms occurring throughout the region in response to the changing climate. While the mountain lion elicits much interest and emotion, its return would not have the same ecological impact as the formation of scattered patches of red oaks, white oaks, basswood, shagbark hickory, sweet birch and other trees that typify woodlands to our south.
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So how do trees survive below-freezing temperatures? They can’t move south or generate heat like a mammal. Sure, the below-ground parts of a tree are kept insulated by a layer of snow, and that is important to winter survival, but the exposed parts of a tree are not so protected. » Continue Reading.
It’s one of the pleasures of fall: walking in the woods on a warm day, scuffing my feet through a deep layer of newly fallen leaves. Looking down, I notice the gold coins of aspen leaves against the bread-knife serrations of brown beech leaves. My feet make that “swoosh, swoosh” sound that takes me back to when I was a kid.
It’s November and the color blast has faded. The woods are gray and brown. The much admired “fall foliage” has drifted earthward to become the more prosaic “leaf litter.” I understand the term, but the word litter grates a little. It connotes trash, yet leaves are just the opposite of trash. Their contribution to forest health, to the ecosystem, is incalculable. They help make the forest what it is.
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If you’ve seen a well-developed clinker polypore (inonotus obliquus) protruding from a tree, there’s a good chance that you remember it. This fungus causes large, black, cinder-like growths, sometimes neatly conical, but often rough and ragged. Also called the birch polypore, you can find these conks on all species of birch, as well as on hophornbeam and occasionally on other hardwoods. By the time the fungal tissue is visible on the outside, the inside of the tree is likely to be rotten to the core.
Much is yet to be learned about this organism, but it seems that infection often occurs after another fungus, called Nectria, has invaded a tree. Injuries, too, allow the clinker polypore to get a foothold, and once it has settled in, death – though sometimes a slow death – seems to be inevitable. » Continue Reading.
Applications are being accepted for the training that will begin in January 2013. The program is open to anyone who has an interest in expanding their gardening experience and knowledge. Participants learn to improve their own gardens and landscapes, including scientifically-based gardening information in a relaxed and supportive atmosphere.
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There is nothing like the scarlet red color of a cardinal flower, Lobelia cardinalis, in bloom along a stream bank or lakeshore right now in late summer. If you have been out and about in the last month or so, paddling, boating, or hiking, you might have been lucky enough to happen upon this stunning beauty during your outing.
Besides being one of my favorite flowers, it is also a favorite of the ruby-throated hummingbird. And while as many as 19 species of plants found in the Eastern US have probably co-evolved with hummingbirds, the cardinal flower is the most well-known. The range of the ruby-throated hummingbird and the cardinal flower are very similar, demonstrating how closely the two are linked. The long tubular flowers of cardinal flower and the long, narrow bill of a hummingbird are a perfect match. By reaching all the way down into the bottom of the five-petaled flower in search of nectar, the hummingbird gets food, and in return, the cardinal flower gets pollinated. » Continue Reading.