growing in the moist bottomland near the creek. No. 880609012.
See also: http://beta.floranorthamerica.org/File:FNA24_P26_Glyceria_pg_78.jpeg
and
http://beta.floranorthamerica.org/Glyceria_striata

@mhodges1957, please can you say, is this what it is? And I photographed a fragment underside.
For the Gold Dust Lichen (Chrysothrix candelaris), cf. inaturalist.org/observations/244827659
For the Hysterium hyalinum, cf. inaturalist.org/observations/244638387

growing in a wet meadow along the edge of the river, pistillate scales with a long awn exceeding the beak of the perigynium, terminal spike staminate, gynecandrous, pistillate, or abortive. No. 880623014.

See also: http://beta.floranorthamerica.org/Carex_frankii
http://beta.floranorthamerica.org/File:FNA23_P128_Carex_turgescens_pg_516.jpeg
and
https://michiganflora.net/genus/Carex

growing in a wet meadow along the edge of the river. No. 880623017.
See also: http://beta.floranorthamerica.org/File:FNA24_P298_Phalaris_pg_771.jpeg
and
http://beta.floranorthamerica.org/Phalaris_arundinacea

growing at the edge of a wet meadow along the side of the river. No. 880623021.
See also: https://www.inaturalist.org/observations/87215518
http://beta.floranorthamerica.org/Juncus_tenuis
and
https://michiganflora.net/record/1522

growing near the edge of the trail on a upland forested ridge, lemmas strongly hispid, hairs long in the middle portions of the lemma, abaxial leaf surfaces pilose on the veins. No. 880618001.
See also: https://michiganflora.net/genus/Brachyelytrum
http://beta.floranorthamerica.org/w/images/1/16/FNA24_P20_Brachyelytrum_pg_61.jpeg
and
http://beta.floranorthamerica.org/Brachyelytrum_erectum

growing in a youthful mixed mesophytic forest near the trail, perigynia with more than 18 conspicuous nerves. No. 880701016.
See also: http://beta.floranorthamerica.org/Carex_sect._Laxiflorae
http://beta.floranorthamerica.org/Carex_blanda
and
http://beta.floranorthamerica.org/File:FNA23_P111_Carex_purpurifera_pg_437.jpeg

This is the famous Davie Poplar, approximately 350 years of age.

At dusk, hundreds and hundreds of Chimney Swifts swirl in vortex above, before darting into the hollow trunk to spend the night. An Eastern Gray Squirrel, however, awaits their arrival, fulfilling its classification as an omnivore. [see 3rd photo].

30 years ago, Dr. Jerome Jackson had amongst the slide set for his students of Ornithology, a photo that elicited primal gasps of horror and shock. The photo showed in gruesome detail an Eastern Gray Squirrel holding a male Northern Cardinal like an ice cream cone. The head of the cardinal had been devoured.

The memory of that photo sprang to mind when I espied the Eastern Gray Squirrel lingering around the hollow into which the Chimney Swifts would descend. And then it quietly slipped in to greet them upon their arrival.

growing along the edge of the parkway, pedicels scabrous. No. 880701003.
See also: https://michiganflora.net/record/2209
http://beta.floranorthamerica.org/File:FNA24_P185_Puccinellia_pg_474.jpeg
http://beta.floranorthamerica.org/Puccinellia_distans
and
https://www.inaturalist.org/observations/161882995

growing in a diverse mixed mesophytic forest near the trail, lateral branches round, leaves equal in size and all ascending. No. 880427007.
See also: https://michiganflora.net/genus/Dendrolycopodium
and
https://michiganflora.net/record/1655

syn. Botrychium dissectum Spreng. f. dissectum, DNA sample, 1/3 of leaf, growing in a diverse mixed mesophytic forest near the trail. No. 880427014.
See also: https://michiganflora.net/record/1777
and
https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:35243-2

Diederich, Millanes, Wedin & Lawrey, 2022, Flora of Lichenicolous Fungi, pages 215-216

On Parmotrema hypotropum growing on Southern Red Oak.

Observation is for the soredia-like clusters of the reproductive structures of the lichenicolous fungus, Tremella parmohypotropi that have erupted through the thallus of the host lichen, Parmotrema hypotropum. Note: The soredia of Parmotrema hypotropum occur at the outer edge of the tips of the lobes, usually between black cilia also at the margin. In the rare instance that apothecia are produced by Parmotrema hypotropum, the rim of the apothecia is covered in soredia.

Observation for the host lichen: https://www.inaturalist.org/observations/231685152