Early July: wild leeks, morning cardinals

Rachel and I awaken early on the first of July after a week away to find that the robins are not the ones singing at 3:30 any longer. Cardinals have taken over. The birds pass this baton every summer, but I rarely notice until it is over. The natural year pivots on changes like this.

Brooklyn and I walk through the neighborhood at about 5:45. A rabbit leaves the lawn on Washington Street to devour smartweeds in the sidewalk cracks. Brooklyn is uncharacteristically restrained. We walk on to Maple Grove, where narrow-leaved wild leek fruits are developing, pale and pulpy inside the skin. The leaves are several weeks past. White avens fruits are soft but becoming hooked at the tips. Agrimony burs are rubbery. Enchanter’s nightshade fruits are becoming bristly but far from ready to disperse, still tipped with flowers. A mourning dove calls. Robins and cardinals share the stage here, singing over the barking red-bellied woodpeckers.

Allium burdickii, seeds developing. 1 July 2024, Maple Grove

White avens fruits are hardening. Carex cephalophora is sprawling, shedding perigynia. The white ash seedlings, doomed to begin with, are further insulted by ash bead gall mites, who have left the leaves covered in pustules. Fowl manna grass spikelets clatter to the ground like scattered couscous as I strain the inflorescences between my fingers. Last fall’s eastern white oak seedlings line the trail, still thick where the mast has let them fall.

A great-crested flycatcher calls. A tufted titmouse responds. A white slime mold has pasted together the leaves of an Amur honeysuckle. A deer feeding in a backyard stands to look at Brooklyn and I head-on, and Brooklyn is dumbfounded. The deer’s antlers are beautifully felted but still blunt-tipped. It watches us for several minutes, scratches its head with its right rear leg, moves on. A red-eyed vireo calls, “Where am I?” “Here I am.” “Where are you?” “There you are,” over and over. A peewee whistles. American pokeweed is coming into bloom.

Floral buds on the broad-leaved wild leeks are tipped white on radiating peduncles, fireworks-in-training. The scapes are red, most of them canted diagonally. There are great colonies of them in the understory now, while their narrow-leaved cousins are spread out along the trail edges. If you had any doubts that these two—Allium tricoccum and A. burdickii—were separate species, this is the time to look. Leaves gone, the stems alone give them away (red and leaning, arching beneath the inflorescence, for broad-leaved wild leek; straight, green, and relatively short for narrow-leaved wild leek). But the flowers clinch it. Scan the forest floor, and the broad-leaved species jump out at you right now, while the narrow-leaved wild leeks fade into the litter. They can’t very well be a single species: the one could never pollinate the other, as the narrow-leaved species goes to seed before the broad-leaved species even flowers.

Allium tricoccum in full flower, 7 July 2024, Maple Grove

On the walk out, American bellflower is blooming in the St. Joseph Creek floodplain, alongside the wood nettles that are sparsely pimpled with midge galls. White bear sedge leaves are etched with Cerodontha tracks that run lengthwise and then diagonally to interconnect.

That night, fireflies streak through the hydrangeas and asters outside our front window. Cicadas call. The annual cicadas have picked up as they do this time every year. In a few weeks, the cicadas will give way to evening crickets just as the robins have passed the baton to the cardinals.

American bellflower, 4 July 2024, Maple Grove

The morning of the 7th, I return to find wingstem about to come into flower, doll’s eyes fruits developing, an ash seedling tipped with a gall. Another giant ash tree has fallen, and the bark sloughing off reveals a reticulum of Armillaria rhizomorphs. The forest floor is strewn with the fallen tips of sugar maple branches withered off by the summer’s 17-year cicadas. White vervain is flowering. The first flowers of broad-leaved wild leek are fully open. Scanning the forest floor as I walk through, I am struck at the size and abundance of the colonies. This year may turn out to be the best show of Allium tricoccum that I’ve ever seen in Maple Grove.

Fallen ash, 7 July 2024, Maple Grove

Plants referenced

  • Acer saccharum — sugar maple
  • Actaea pachypoda — doll’s eyes, white baneberry
  • Agrimonia gryposepala — common agrimony
  • Allium burdickii — narrow-leaved wild leek
  • Allium tricoccum — broad-leaved wild leek
  • Campanulastrum americanum — American bellflower, tall bellflower
  • Carex albursina — white bear sedge
  • Carex cephalophora
  • Circaea canadensis — enchanter’s nightshade
  • Fraxinus americana — white ash
  • Fraxinus sp. — ash. Everything I have run into in Maple Grove appears to be white ash, F. americana, but I’m not certain enough to say with fallen trees.
  • Geum canadense — white avens
  • Glyceria striata — fowl manna grass
  • Laportea canadensis — wood nettles; note that the midge gall photo linked in this post is from the same population, but taken in 2020
  • Lonicera maackii — Amur honeysuckle
  • Phytolacca americana — American pokeweed
  • Polygonum arenastrum / P. aviculare — sidewalk crack smartweed. These two species are treated as synonyms in Flora of North America, but separate species in Rericha and Wilhelm. I could not key this individual confidently to one over the other.
  • Quercus alba — eastern white oak
  • Verbesina alternifolia — wingstem

June 4: Cicadas

The European beech outside the window of our herbarium is laced with cicadas. We watch them from inside at eye-level, near the middle of the canopy. They swerve between the branches, navigating as though blindfolded, following the calls of potential mates, looping between the branches and bumping into leaves on their way to find one another. They can see with those great red eyes, but they hardly need them. Cicadas could drift through the world on sound alone.

Yesterday afternoon, my colleague, a forest ecologist and dendrochronologist, was explaining to a group of collaborators from China how our wood collection notates not just the passing of time, but the landmarks by which we recognize its passing. Fires, droughts, years of heavy rain, early freezes, lawnmowers scraping against the bark, a fungal infection, the tree’s response to that infection: all are marked in the trunks. As she spoke, the cicadas outside buzzed so loudly that I suspected the windows were open. (They were not.) In a few years, new oak samples in our collection will show the impact of the 2024 cicada emergence as a slight decrease in growth, on average, for this year and perhaps a few more.

This morning, the cicadas start calling at 3:07, the low hum of the first species I hear each morning. This is the species that drones like an electric guitar resonating through a distortion pedal, or a Tuvan throat singer. The sound rises for two minutes. Our smaller cat, Joni, is vigilant. The droning cicadas are accompanied by the chirrups and buzzes of one of the other species, then they all slowly quiet. I had until today thought they started up somewhere closer to 9:00.

By 3:11, the sound has died down to nothing. Perhaps one of the cicadas awoke in the night to a bad dream, aroused the others as it rolled over on the branch. Whatever the cause, they are still now, save for sporadic buzzes and chirps and whistles. One in the shrubs outside our window sputters every few seconds. Joni stands on her rear feet to stare out the window.

At 3:18 the drone of the cicadas starts up again. At 3:26, the robins start singing for the day. Within a month, their warbling will be replaced by the morning whistles of the cardinals. The cicadas will have run their course. They will have mated and slit open the undersides of the branches to stash their eggs, leaving broken branches at the edges of canopies all over town. The herbarium window will be quiet again, no longer spawning cicadas that float along on song to mate, just this week, just this afternoon, and die before they can see the fruits of their labor.

How baffled the cicadas would be if they could understand that we’d been waiting for them all year. What would they make of us if they knew how much time we spend talking about their strange lives?

Selected references

Karban R. 1980. Periodical cicada nymphs impose periodical oak tree wood accumulation. Nature 287: 326–327.
Koenig WD, Liebhold AM. 2003. Regional impacts of periodical cicadas on oak radial increment. Canadian Journal of Forest Research 33: 1084–1089.
Koenig WD, Liebhold AM, LaMontagne JM, Pearse IS. 2023. Periodical Cicada Emergences Affect Masting Behavior of Oaks. The American Naturalist 201: 755–762.
Moore T, Huber F, Weber T, Klein U, Back C. 1993. Interaction Between Visual and Phonotactic Orientation During Flight in Magicicada cassini (Homoptera: Cicadidae). The Great Lakes Entomologist 26: 199–221.