Ohio Birds and Biodiversity: pyrola elliptica

Showing posts with label pyrola elliptica. Show all posts

Friday, June 7, 2024

Shinleaf (Pyrola elliptica)

Like an elfin garden, a colony of Shinleaf (Pyrola elliptica) springs from well-drained soils of an upland forest in Mohican State Forest in Ashland County, Ohio. Shauna and I did a bit of hiking here this morning and were pleased to stumble across this magical little wildflower.

A trio of flowering spikes erupt from their leafy bases. Shinleaf can be surprisingly easy to miss, given its gloomily lit haunts. Also, it blooms well after the crush of spring wildflowers, when everyone is in the woods ogling showy bluebells, trout lilies, wood poppies, etc. Furthermore, from my experience, this Lilliputian member of the heath family (formerly and sometimes still the Pyrolaceae family) is normally rather scarce, with widely scattered and small colonies.

An isolated plant showcases the graceful form of Pyrola elliptica. The specific epithet elliptica stems from the slightly elongated shape of the basal leaves. I love the genus name Pyrola, which rolls pleasingly off the tongue. It references the genus Pyrus, the pear trees, due to a supposed resemblance of the foliage.

The little candelabras of waxy white flowers are quite elegant. The other three species of Pyrola found in Ohio have similar inflorescences replete with waxy flowers, but only one other, the Round-leaved Wintergreen (P. rotundifolia) can be locally common, although it is largely confined to the eastern half of the state.

The other two, One-sided Wintergreen (Pyrola [Orthilia] secunda) and Green-flowered Shinleaf (P. chlorantha) are now considered extirpated, as it's been over two decades since anyone has found them. The former occurred in only seven counties in the extreme northeastern corner of the state, and the latter was only found once, in Lucas County. Their disappearance correlates with a seeming northward retreat of northern flora at their southern limits. Rediscover either of those, and you'll become famous in Ohio botanical circles.

Sunday, June 14, 2009

Shinleaf and Vireo

Circumstances found me in the immediate vicinity of Mohican State Forest last Saturday, and I had a few hours to explore the woodlands. Mohican, for those of you who don't know it, is one of Ohio's richest forests, characterized mainly by the steep hemlock-cloaked Clear Fork Gorge that bisects the area. Providing the sound track on my foray were the likes of Veery, Blue-headed Vireo, Black-throated Green, Kentucky, Hooded warblers, and many more.

But the flora is incredible, too, and I saw many interesting plants. Chief among them was the above; a diminutive little beauty that almost defies description. It is Shinleaf, Pyrola elliptica. While widespread and scattered throughout eastern Ohio, this species is not usually numerous and always a treat to stumble across. Such are its looks that many a gardener would probably kill and maim to have it growing in captivity, but I suspect that this is not a plant that lends itself well to being corraled.

Note the thick bed of pine needles that the Shinleaf springs from. It really goes for poor, dry, acid soils, and in this instance a small colony was growing under an old plantation of Red and White pines. Exquisite in form and color, the tiny candelabra of flowers stands perhaps six inches high, and the waxy-white blooms set off nicely against the semi-lustrous rosette of papery green leaves.

In times past, Pyrolas were placed in the Heath Family (Ericaceae), but now are considered to constitute their own family, the Shinleaf Family (Pyrolaceae). There are only 50 or so species in a few genera, and only seven occur in Ohio and most are rare. The members of this family are primarily northerners, occupying cool boreal and upland woods. The species at hand, Pyrola elliptica, is the most common of the four members of this genus found in Ohio. The name Pyrola is a diminutive of Pyrus, the genus of pears, due to the alleged similarity in the appearance of the leaves.

The flowers nod on short pedicels so that the blossoms can watch the ground, apparently; this makes for tough going in regards to taking decent photos of the flowers. But even from the rear they are quite showy, and we can see the trangular green sepals that help differentiate this species from the similar Round-leaved Pyrola, P. rotundifolia, which would have oblong-shaped sepals.

Later, as I was strolling along a small bird rocketed from an overhanging young American Beech tree, Fagus grandifolia. That would be the tree on the left side of the photo, with its foliage in front of the large trunk in the dead center. I glanced up and was surprised to see a Red-eyed Vireo nest only six feet off the ground, and directly over this path, along which pass dozens of people daily.

Vireo nests are obvious enough, once you know they're there. But from afar or with just a careless glance, they look a lot like a clump of dead leaves and plant detritus caught up in the foliage.

Seen well, we can admire the vireo nest for the architectural marvel that it is. It'll never cease to amaze me how songbirds can construct such well-engineered affairs, especially without benefit of hands and fingers. As is this nest, the forest-dwelling vireos almost always site the nest in the fork of a slender branchlet far out from any primary trunks. But they usually pick a spot a bit higher off the ground than this.

So low was this Red-eyed Vireo nest that I was able to hold my camera over my head and photograph the contents. Upon reviewing my work on the camera's viewfinder immediately thereafter, I saw that a moral dilemma had been thrust upon me. Two of those eggs are from a Brown-headed Cowbird. They're the larger ones towards the bottom of the nest, heavily ornamented with chocolate blotches.

What to do. Red-eyed Vireos are a valuable part of the forest community and these little birds make an arduous trek all the way from the tropics to summer with us, feast on caterpillars, and contribute their cheery phrases to the symphony of the forest. And red-eyes are heavily hit by cowbirds.

The cowbirds are native too, but man's wholesale changes to the environment have greatly increased their numbers and brought these nest parasites into much more prolific contact with hosts and habitats that they historically would not have infested.

I left them.

I made note of the nest's exact locale, so that I might sneak up and not spook the incubator on my return. Carefully side-stepping soundlessly, she let me come in close, to about 15 feet, and never did flush. With an eye bright as only little birds can be, she curiously watched my every movement but allowed me to take some photos. A bit blurry, I know, but I wasn't about to blind her with the flash and the gloom of the understory didn't allow for fast shutters.

Here's a short video.