Carderock – Marsden Tract Report

skink posing on rockface

Plants seen on May 2; those that were flowering are probably close to done by today.






Antennaria plantaginifolia (plantain-leaved pussy toes): most in seed




Aplectrum hyemale (puttyroot orchid): one flower on one spike open
Arisaema triphyllum (jack-in-the-pulpit): flowering
Asimina triloba (pawpaw): done flowering
Boechera laevigata (smooth rock cress): in seed
Cerastium arvense (field chickweed): a few still flowering but past peak

Chionanthus virginicus (fringetree): glorious flowering; follow your nose, they’re fragrant




Claytonia virginica (spring beauty): only a handful left
Comandra umbellata (bastard toadflax):  no flowers, though there were buds 2 weeks ago; did I miss it?!
Erigeron pulchellus (Robin’s plantain): flowering
Geranium maculatum (wild geranium): done
Hesperis matronalis (dame’s rocket; alien): blooming
Heuchera americana (alumroot): flowering
Hieracium venosum (rattlesnake weed): flowering
Houstonia caerulea (azure bluets): still flowering but past peak
Hydrophyllum virginianum (Virginia waterleaf): flowering but in decline
Kalmia latifolia (mountain laurel): lots of buds just ready to burst open
Mertensia virginica (Virginia bluebells): all done
Micranthes virginiensis (early saxifrage): saw one plant blooming; effectively done
Mitchella repens (partridgeberry): budding up
Myosotis verna (spring forget-me-not): done
Osmorhiza claytonii (sweet cicely): done
Oxalis stricta (common yellow woodsorrel): going strong
Oxalis violacea (violet woodsorrel): still blooming
Packera aurea (golden ragwort): done

Penstemon hirsutus (hairy beardtongue): peak bloom



Phacelia covillei (Coville’s phacelia): done
Phlox divaricata (wild blue phlox): very few left; effectively done
Phlox subulata (moss phlox): only a few left; effectively done
Polygonatum biflorum (Solomon’s seal): blooming
Potentilla canadensis (dwarf cinquefoil): blooming
Potentilla simplex (common cinquefoil): blooming
Ranunculus repens (creeping buttercup; alien): blooming

Robinia pseudoacacia (black locust): blooming



Rosa multiflora (multiflora rose; alien): blooming
Rubus species (dewberry): blooming
Salvia lyrata (lyre-leaved sage): still blooming but past peak
Sanicula species (snakeroot): just starting to bloom
Silene caroliniana (wild pink): done
Sisyrinchium angustifolium (blue-eyed grass): blooming
Staphylea trifolia (bladdernut): mostly done
Stellaria pubera (star chickweed): just a few left, almost done
Thalictrum coriaceum (maid-of-the-mist): blooming but past peak
Thalictrum thalictroides (rue anemone): done
Toxicodendron radicans (poison ivy): full bloom
Tradsecantia virginiana (Virginia spiderwort): full bloom
Trifolium repens (white clover; alien): blooming
Trillium sessile (toadshade): almost done
Vaccinium stamineum (deerberry): blooming
Valeriana pauciflora (long-tube valerian): blooming, just past peak
Valerianella species (cornsalad): blooming
Veronica serpyllifolia var. serpyllifolia (thyme-leaved speedwell): blooming
Viola palmata (early blue violet): blooming
Viola sororia (common blue violet): done

and a black rat snake

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