Authors: Elizabeth McMurchie and Andrea Weeks
Citation: McMurchie, E. 2018. "A floristic survey of the vascular plants of the Blue Ridge Center for Environmental Stewardship, Purcellville, Loudoun County, Virginia" M.S. Thesis. George Mason University. 115 pp.
Locality: Loudoun County, Virginia
Abstract: A floristic survey and analysis of community composition were conducted during the 2017 and 2018 growing seasons at the Blue Ridge Center for Environmental Stewardship (BRCES), Purcellville, Virginia. The BRCES is an 895 acre park located in the "Between the Hills" region of Loudoun County between the Blue Ridge and Short Hill Mountain. The park contains several wetlands, including Gordon Pond, Piney Run, Sweet Run and an unshaded seep adjacent to Sweet Run, as well as a wetland that has developed in place of a formerly dammed pond. Parts of two meadows, Demory Field, and Sawmill Field, as well as a powerline cut, are maintained for native grasses and meadow plants. On June 14, 2016, the mostly wooded western 600 acres of the park were transferred to the Virginia Department of Conservation and Recreation to form Loudoun County's first state park. In this study, 515 species belonging to 328 genera and 102 families were identified. Forty-four species and seven varieties and subspecies identified were new records for Loudoun County. Two species, Pycnanthemum torryei and Platanthera peramoena, are considered rare at the state level under the Virginia Natural Heritage Resources designations S2 (imperiled) and S1 (critical imperiled) respectively. Eleven plots were used to determine community types as defined by the Virginia Natural Heritage Program resulting in five distinct community types belonging to terrestrial and palustrine communities and a sixth, mixed terrestrial and palustrine community. The data collected in this survey and community type study provide a baseline for monitoring the impact of future park development at the BRCES on the park's flora.

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Families: 102
Genera: 328
Species: 515
Total Taxa (details): 514

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Acorus calamus - Single-Vein Sweetflag
Sambucus canadensis - Common Elderberry
Viburnum acerifolium - Maple-Leaf Arrow-Wood
Viburnum dentatum - Southern Arrow-Wood
Viburnum prunifolium - Smooth Blackhaw
Alisma subcordatum - American Water-Plantain
Allium vineale - Crow Garlic
Narcissus poeticus - Poet's Narcissus
Rhus typhina - Stag-Horn Sumac
Toxicodendron radicans - Eastern Poison Ivy
Asimina triloba - Common Pawpaw
Cicuta maculata - Spotted Water-Hemlock
Cicuta maculata var. maculata - Spotted Water-Hemlock
Conium maculatum - Poison-Hemlock
Cryptotaenia canadensis - Canadian Honewort
Daucus carota - Queen Anne's-Lace
Osmorhiza claytonii - Hairy Sweet-Cicely
Sanicula canadensis - Canadian Black-Snakeroot
Sanicula odorata - Clustered Black-Snakeroot
Torilis japonica - Erect Hedge-Parsley
Zizia aurea - Golden Alexanders
Asclepias incarnata - Swamp Milkweed
Asclepias syriaca - Common Milkweed
Asclepias tuberosa - Butterfly Milkweed
Asclepias viridiflora - Green Comet Milkweed
Vinca minor - Lesser Periwinkle
Ilex opaca - American Holly
Ilex opaca var. opaca - American Holly
Arisaema triphyllum - Jack-in-the-Pulpit
Landoltia punctata - Dotted Duckmeat
Wolffia brasiliensis - Brazilian Watermeal
Asarum canadense - Canadian Wild Ginger
Maianthemum racemosum - Feathery False Solomon's-Seal
Maianthemum racemosum subsp. racemosum - Feathery False Lily of the Valley
Muscari botryoides - Common Grape-Hyacinth
Polygonatum biflorum - King Solomon's-Seal
Scilla siberica - Siberian Squill
Hemerocallis fulva - Orange Day-Lily
Asplenium platyneuron - Ebony Spleenwort
Achillea millefolium - common yarrow
Ageratina altissima - White Snakeroot
Ambrosia trifida - Great Ragweed
Anthemis arvensis - Corn Chamomile
Arctium minus - Lesser Burrdock
Artemisia vulgaris - Common Wormwood
Bidens aristosa - Bearded Beggarticks
Bidens cernua - Nodding Burr-Marigold
Bidens comosa - Three-Lobe Beggarticks
Carduus acanthoides - Spiny Plumeless-Thistle
Centaurea stoebe - Spotted Knapweed
Chondrilla juncea - Rush Skeltonweed
Cirsium arvense - Canadian Thistle
Cirsium discolor - Field Thistle
Conoclinium coelestinum - Blue Mistflower
Conyza canadensis - Canadian Horseweed
Coreopsis lanceolata - Lance-Leaf Tickseed
Echinacea purpurea - Eastern Purple-Coneflower
Elephantopus carolinianus - Carolina Elephant's-Foot
Erechtites hieraciifolius - American Burnweed
Erigeron annuus - Eastern Daisy Fleabane
Erigeron philadelphicus - Philadelphia Fleabane
Erigeron strigosus - Prairie Fleabane
Eupatorium perfoliatum - Common Boneset
Eurybia divaricata - White Wood-Aster
Euthamia graminifolia - Flat-Top Goldentop
Galinsoga parviflora - Gallant-Soldier
Helianthus giganteus - Giant Sunflower
Helianthus maximiliani - Maximilian Sunflower
Hieracium caespitosum - Gronovis Hawkweed
Hieracium scabrum - Rough Hawkweed
Hieracium venosum - Rattlesnake-Weed
Lactuca canadensis - Wild Lettuce
Lactuca floridana - Woodland Lettuce
Lactuca saligna - Willow-Leaf Lettuce
Matricaria discoidea - Pineapple-Weed
Packera aurea - Golden Groundsel
Pseudognaphalium obtusifolium - Blunt-Leaf Rabbit-Tobacco
Ratibida pinnata - Gray-Head Mexican-Hat
Rudbeckia hirta - Black-Eyed-Susan
Rudbeckia laciniata - Green-Head Coneflower
Rudbeckia triloba - Brown-Eyed-Susan
Solidago altissima - Tall Goldenrod
Solidago caesia - Wreath Goldenrod
Solidago caesia var. caesia - Blue-Stem Goldenrod
Solidago gigantea - Late Goldenrod
Solidago juncea - Early Goldenrod
Solidago rugosa - Wrinkle-Leaf Goldenrod
Solidago ulmifolia - Elm-Leaf Goldenrod
Sonchus asper - Spiny-Leaf Sow-Thistle
Symphyotrichum laeve - Smooth Blue American-Aster
Symphyotrichum lanceolatum - White Panicled American-Aster
Symphyotrichum lanceolatum var. lanceolatum - White Panicled American-Aster
Symphyotrichum lateriflorum - Calico American-Aster
Symphyotrichum novae-angliae - New England American-Aster
Symphyotrichum pilosum - White Oldfield American-Aster
Symphyotrichum puniceum - Purple-Stem American-Aster
Symphyotrichum puniceum var. puniceum - Purple-Stem American-Aster
Symphyotrichum undulatum - Wavy-Leaf American-Aster
Taraxacum officinale - Common Dandelion
Tragopogon dubius - Meadow Goat's-Beard
Tussilago farfara - Colt's-Foot
Vernonia noveboracensis - New York Ironweed
Athyrium asplenioides - Southern Lady Fern
Impatiens capensis - Spotted Touch-Me-Not
Berberis thunbergii - Japanese Barberry
Alnus serrulata - Brookside Alder
Carpinus caroliniana - American Hornbeam
Corylus americana - American Hazelnut
Campsis radicans - Trumpet-Creeper
Catalpa bignonioides - Southern Catalpa
Hackelia virginiana - Beggar's-Lice
Mertensia virginica - Virginia Bluebells
Myosotis arvensis - Rough Forget-Me-Not
Alliaria petiolata - Garlic-Mustard
Barbarea vulgaris - Garden Yellow-Rocket
Boechera laevigata - Smooth False Rockcress
Cardamine angustata - Slender Toothwort
Cardamine concatenata - Cut-Leaf Toothwort
Cardamine hirsuta - Hairy Bittercress
Cardamine parviflora - Sand Bittercress
Cardamine pensylvanica - Quaker Bittercress
Lepidium campestre - Cream-Anther Field Pepperwort
Lepidium virginicum - Poorman's-Pepperwort
Microthlaspi perfoliatum - Perfoliate Pennycress
Thlaspi arvense - Field Pennycress
Campanula aparinoides - Marsh Bellflower
Lobelia cardinalis - Cardinal-Flower
Lobelia inflata - Indian-Tobacco
Lobelia siphilitica - Great Blue Lobelia
Triodanis perfoliata - Clasping-Leaf Venus'-Looking-Glass
Celtis occidentalis - Common Hackberry
Dipsacus fullonum - Fuller's Teasel
Dipsacus laciniatus - Cut-Leaf Teasel
Lonicera japonica - Japanese Honeysuckle
Lonicera maackii - Amur Honeysuckle
Valerianella locusta - Lamb's-Lettuce
Valerianella radiata - Beaked Cornsalad
Cerastium glomeratum - Sticky Mouse-Ear Chickweed
Dianthus armeria - Deptford Pink
Paronychia canadensis - Smooth Forked Nailwort
Silene latifolia - Bladder-Campion
Silene vulgaris - Maiden's-Tears
Stellaria graminea - Grass-Leaf Starwort
Stellaria longifolia - Long-Leaf Starwort
Stellaria media - Common Chickweed
Stellaria pubera - Great Chickweed
Celastrus orbiculatus - Asian Bittersweet
Euonymus alatus - Winged Spindletree
Uvularia sessilifolia - Sessile-Leaf Bellwort
Commelina communis - Asiatic Dayflower
Calystegia sepium - Hedge False Bindweed
Ipomoea hederacea - Ivy-Leaf Morning-Glory
Ipomoea pandurata - Man-of-the-Earth
Cornus amomum - Silky Dogwood
Cornus florida - Flowering Dogwood
Nyssa sylvatica - Black Tupelo
Juniperus virginiana - Eastern Red-Cedar
Carex albicans - White-Tinge Sedge
Carex blanda - Eastern Woodland Sedge
Carex crinita - Fringed Sedge
Carex digitalis - Slender Woodland Sedge
Carex granularis - Limestone-Meadow Sedge
Carex gravida - Heavy Sedge
Carex intumescens - Greater Bladder Sedge
Carex kraliana - Kral's Sedge
Carex laxiculmis - Spreading Sedge
Carex laxiflora - Broad Loose-Flower Sedge
Carex lurida - Sallow Sedge
Carex molestiformis - Ozark Plateau Sedge
Carex prasina - Drooping Sedge
Carex radiata - Eastern Star Sedge
Carex rosea - Rosy Sedge
Carex scoparia - Pointed Broom Sedge
Carex squarrosa - Squarrose Sedge
Carex stipata - Stalk-Grain Sedge
Carex stipata var. stipata - Stalk-Grain Sedge
Carex torta - Twisted Sedge
Carex virescens - Ribbed Sedge
Carex vulpinoidea - Common Fox Sedge
Cyperus echinatus - Globe Flat Sedge
Cyperus strigosus - Straw-Color Flat Sedge
Eleocharis obtusa - Blunt Spike-Rush
Eleocharis quadrangulata - Square-Stem Spike-Rush
Scirpus cyperinus - Cottongrass Bulrush
Scirpus georgianus - Georgia Bulrush
Scirpus pendulus - Rufous Bulrush
Dennstaedtia punctilobula - Hay-Scented Fern
Pteridium aquilinum - Northern Bracken Fern
Dryopteris carthusiana - Spinulose Wood Fern
Dryopteris marginalis - Marginal Wood Fern
Diospyros virginiana - Common Persimmon
Elaeagnus umbellata - Autumn-Olive
Equisetum arvense - Field Horsetail
Chimaphila maculata - Striped Prince's-Pine
Gaylussacia baccata - Black Huckleberry
Kalmia latifolia - Mountain-Laurel
Monotropa uniflora - One-Flower Indian-Pipe
Vaccinium pallidum - Early Lowbush Blueberry
Acalypha gracilens - Slender Three-Seed-Mercury
Acalypha rhomboidea - Common Three-Seed-Mercury
Euphorbia corollata - Flowering Spurge
Euphorbia maculata - Spotted Sandmat
Amphicarpaea bracteata - American Hog-Peanut
Desmodium nuttallii - Nuttall's Tick-Trefoil
Desmodium paniculatum - Panicled-Leaf Tick-Trefoil
Desmodium paniculatum var. paniculatum - Panicled-Leaf Tick-Trefoil
Desmodium perplexum - Perplexed Tick-Trefoil
Hylodesmum nudiflorum - Naked-Flower Tick-Clover
Kummerowia striata - Japanese-Clover
Lespedeza cuneata - Chinese Bush-Clover
Lespedeza violacea - Violet Bush-Clover
Lotus corniculatus - Garden Bird's-Foot-Trefoil
Medicago lupulina - Black Medick
Melilotus albus - White Sweet-Clover
Melilotus officinalis - Yellow Sweet-Clover
Securigera varia - Purple Crown-Vetch
Senna hebecarpa - American Wild Sensitive-Plant
Trifolium arvense - Rabbit-Foot Clover
Trifolium campestre - Lesser Hop Clover
Trifolium hybridum - Alsike Clover
Trifolium repens - White Clover
Vicia cracca - Purple-White Tufted Vetch
Vicia sativa - Garden Vetch
Vicia villosa - Winter Vetch
Castanea dentata - American Chestnut
Fagus grandifolia - American Beech
Quercus alba - Northern White Oak
Quercus coccinea - Scarlet Oak
Quercus montana - Chestnut Oak
Quercus rubra - Northern Red Oak
Obolaria virginica - Virginia Pennywort
Geranium columbinum - Long-Stalk Crane's-Bill
Geranium dissectum - Cut-Leaf Crane's-Bill
Geranium maculatum - Spotted Crane's-Bill
Hamamelis virginiana - American Witch-Hazel
Hydrangea arborescens - Wild Hydrangea
Philadelphus inodorus - Scentless Mock Orange
Hypericum mutilum - Dwarf St. John's-Wort
Hypericum perforatum - Common St. John's-Wort
Hypericum punctatum - Spotted St. John's-Wort
Sisyrinchium angustifolium - Narrow-Leaf Blue-Eyed-Grass
Carya cordiformis - Bitter-Nut Hickory
Carya glabra - Pignut Hickory
Carya tomentosa - Mockernut Hickory
Juglans nigra - Black Walnut
Juncus effusus - Lamp Rush
Juncus tenuis - Lesser Poverty Rush
Luzula echinata - Hedgehog Wood-Rush
Cunila origanoides - Common Dittany
Lamium purpureum - Red Henbit
Lycopus virginicus - Virginia Water-Horehound
Mentha canadensis - American Wild Mint
Perilla frutescens - Beefsteakplant
Prunella vulgaris - Common Selfheal
Pycnanthemum muticum - Clustered Mountain-Mint
Pycnanthemum tenuifolium - Narrow-Leaf Mountain-Mint
Pycnanthemum torreyi - Torrey's Mountain-Mint
Scutellaria elliptica - Hairy Skullcap
Scutellaria lateriflora - Mad Dog Skullcap
Scutellaria serrata - Showy Skullcap
Teucrium canadense - American Germander
Lindera benzoin - Northern Spicebush
Erythronium americanum - American Trout-Lily
Erythronium umbilicatum - Dimpled Trout-Lily
Medeola virginiana - Indian Cucumber-Root
Diphasiastrum digitatum - Fan Creeping-Cedar
Huperzia lucidula - Shining Fir-Moss
Cuphea viscosissima - Blue Waxweed
Hibiscus trionum - Flower-of-An-Hour
Malva neglecta - Dwarf Mallow
Sida spinosa - Prickly Fanpetals
Tilia americana - American Basswood
Menispermum canadense - Canadian Moonseed
Mollugo verticillata - Green Carpetweed
Claytonia virginica - Virginia Springbeauty
Morus alba - White Mulberry
Forsythia suspensa - Weeping Forsythia
Circaea canadensis - Broad-Leaf Enchanter's-Nightshade
Circaea canadensis subsp. canadensis - Broad-Leaf Enchanter's-Nightshade
Ludwigia palustris - Marsh Primrose-Willow
Oenothera biennis - King's-Cureall
Onoclea sensibilis - Sensitive Fern
Botrypus virginianus - Rattlesnake Fern
Sceptridium biternatum - Sparse-Lobe Grape Fern
Aplectrum hyemale - Adam-and-Eve
Goodyera pubescens - Downy Rattlesnake-Plantain
Platanthera peramoena - Pride-of-the-Peak
Tipularia discolor - Crippled-Cranefly
Conopholis americana - American Squawroot
Orobanche uniflora - Naked Broomrape
Oxalis dillenii - Slender Yellow Wood-Sorrel
Oxalis stricta - Upright Yellow Wood-Sorrel
Oxalis violacea - Violet Wood-Sorrel
Corydalis flavula - Yellow Fumewort
Dicentra cucullaria - Dutchman's-Breeches
Papaver dubium - Blindeyes
Paulownia tomentosa - Princesstree
Penthorum sedoides - Ditch-Stonecrop
Mimulus ringens - Allegheny Monkey-Flower
Mimulus ringens var. ringens - Allegheny monkeyflower
Phryma leptostachya - American Lopseed
Phytolacca americana - American Pokeweed
Pinus strobus - Eastern White Pine
Pinus virginiana - Virginia Pine
Chelone glabra - White Turtlehead
Gratiola neglecta - Clammy Hedge-Hyssop
Linaria vulgaris - Greater Butter-and-Eggs
Penstemon digitalis - Foxglove Beardtongue
Plantago aristata - Large-Bract Plantain
Plantago lanceolata - English Plantain
Plantago rugelii - Black-Seed Plantain
Veronica arvensis - Corn Speedwell
Veronica hederifolia - Ivy-Leaf Speedwell
Veronica officinalis - Common Gypsyweed
Veronica persica - Bird-Eye Speedwell
Veronica serpyllifolia - Thyme-Leaf Speedwell
Platanus occidentalis - American Sycamore
Andropogon gerardii - Big Bluestem
Andropogon virginicus - Chalky Bluestem
Anthoxanthum odoratum - Large Sweet Vernal Grass
Arrhenatherum elatius - Tall Oat Grass
Arthraxon hispidus - Small Carp Grass
Brachyelytrum erectum - Bearded Shorthusk
Bromus catharticus - Rescue Grass
Bromus inermis - Smooth Brome
Bromus sterilis - Poverty Brome
Bromus tectorum - Cheat Grass
Cinna arundinacea - Sweet Wood-Reed
Coleataenia anceps - Beaked Cut-Throat Grass
Coleataenia anceps subsp. anceps - Beaked Cut-Throat Grass
Dactylis glomerata - Orchard Grass
Danthonia spicata - Poverty Wild Oat Grass
Dichanthelium boscii - Bosc's Witch Grass
Dichanthelium clandestinum - Deer-Tongue Witch Grass
Dichanthelium commutatum - Variable Witch Grass
Dichanthelium dichotomum - Cypress Witch Grass
Digitaria ciliaris - Southern Crab Grass
Echinochloa muricata - Rough Barnyard Grass
Eleusine indica - Indian Goose Grass
Elymus glabriflorus - Southeastern Wild Rye
Elymus hystrix - Eastern Bottle-Brush Grass
Elymus macgregorii - Macgregor's Wild Rye
Elymus repens - Creeping Wild Rye
Elymus villosus - Hairy Wild Rye
Elymus virginicus - Virginia Wild Rye
Eragrostis pectinacea - Purple Love Grass
Eragrostis spectabilis - Petticoat-Climber
Glyceria striata - Fowl Manna Grass
Holcus lanatus - Common Velvet Grass
Leersia oryzoides - Rice Cut Grass
Leersia virginica - White Grass
Lolium perenne - Perennial Rye Grass
Microstegium vimineum - Japanese Stilt Grass
Miscanthus sinensis - Chinese Silver Grass
Panicum dichotomiflorum - Autumn Panic Grass
Panicum virgatum - Wand Panic Grass
Phalaris arundinacea - Reed Canary Grass
Phleum pratense - Common Timothy
Poa annua - Annual Blue Grass
Poa cuspidata - Early Blue Grass
Poa pratensis - Kentucky Blue Grass
Poa trivialis - Rough-Stalk Blue Grass
Schizachyrium scoparium - Little False Bluestem
Setaria italica - Italian Bristle Grass
Setaria pumila - Yellow Bristle Grass
Sorghastrum nutans - Yellow Indian Grass
Sorghum halepense - Johnson Grass
Sporobolus vaginiflorus - Poverty Dropseed
Tridens flavus - Tall Redtop
Tripsacum dactyloides - Eastern Mock Grama
Phlox paniculata - Fall Phlox
Fallopia convolvulus - Black-Bindweed
Persicaria arifolia - Halberd-Leaf Tearthumb
Persicaria hydropiper - Mild Water-Pepper
Persicaria longiseta - Bristly Lady's-Thumb
Persicaria perfoliata - Asiatic Tearthumb
Persicaria sagittata - Arrow-Leaf Tearthumb
Polygonum aviculare - Yard Knotweed
Rumex crispus - Curly Dock
Lysimachia ciliata - Fringed Yellow-Loosestrife
Anemone americana - Round-Lobe Hepatica
Anemone virginiana - Tall Thimbleweed
Clematis virginiana - Devil's-Darning-Needles
Ranunculus abortivus - Kidney-Leaf Buttercup
Ranunculus bulbosus - St. Anthony's-Turnip
Ranunculus hispidus - Bristly Buttercup
Thalictrum pubescens - King-of-the-Meadow
Agrimonia pubescens - Soft Grooveburr
Amelanchier arborea - Intermediate Service-Berry
Crataegus crus-galli - Cock-Spur Hawthorn
Crataegus intricata - Copenhagen Hawthorn
Fragaria virginiana - Virginia Strawberry
Geum canadense - White Avens
Geum vernum - Spring Avens
Malus coronaria - Sweet Crabapple
Malus pumila - Cultivated Apple
Physocarpus opulifolius - Atlantic Ninebark
Potentilla canadensis - Dwarf Cinquefoil
Potentilla indica - Indian-Strawberry
Potentilla norvegica - Norwegian Cinquefoil
Potentilla recta - Sulphur Cinquefoil
Potentilla simplex - Oldfield Cinquefoil
Prunus avium - Sweet Cherry
Prunus serotina - Black Cherry
Pyrus calleryana - Bradford Pear
Pyrus communis - Common Pear
Rosa carolina - Carolina Rose
Rosa multiflora - Rambler Rose
Rubus flagellaris - Whiplash Dewberry
Rubus occidentalis - Black Raspberry
Rubus pensilvanicus - Pennsylvania Blackberry
Rubus phoenicolasius - Wine Raspberry
Galium anglicum - Wall Bedstraw
Galium aparine - Sticky-Willy
Galium circaezans - Licorice Bedstraw
Galium lanceolatum - Lance-Leaf Wild Licorice
Galium obtusum - Blunt-Leaf Bedstraw
Galium pedemontanum - Piedmont-Bedstraw
Galium triflorum - Fragrant Bedstraw
Houstonia caerulea - Quaker-Ladies
Houstonia longifolia - Long-Leaf Summer Bluet
Populus deltoides - Eastern Cottonwood
Salix nigra - Black Willow
Salix sericea - Silky Willow
Acer negundo - Ash-Leaf Maple
Acer platanoides - Norway Maple
Acer rubrum - Red Maple
Acer saccharinum - Silver Maple
Acer saccharum - Sugar Maple
Chrysosplenium americanum - American Golden-Saxifrage
Heuchera americana - American Alumroot
Micranthes virginiensis - Early Pseudosaxifrage
Verbascum blattaria - Moth Mullein
Verbascum thapsus - Great Mullein
Ailanthus altissima - Tree-of-Heaven
Smilax hispida - Chinaroot
Physalis heterophylla - Clammy Ground-Cherry
Solanum carolinense - Carolina Horse-Nettle
Solanum ptychanthum - Eastern Black Nightshade
Typha latifolia - Broad-Leaf Cat-Tail
Ulmus americana - American Elm
Ulmus parvifolia - Chinese Elm