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Rare and Endangered Plant Species in Rhode Island
PTERIDOPHYTES ANGIOSPERMS (CONTINUED)
Aspleniaceae (Spleenwort Family)
Fagaceae (Oak Family)
Asplenium montanum Mountain Spleenwort
Quercus prinoides Dwarf Chestnut Oak
Asplenium rhizophyllum Walking Fern
Quercus stellata Post Oak
Asplenium trichomanes Maidenhair Spleenwort
Fumariaceae (Fumitory Family)
Equisetaceae (Horsetail Family)
Adlumia fungosa Climbing Fumitory
Equisetum fluviatile Water Horsetail
Corydalis sempervirens Pale Corydalis
Equisetum hyemale ssp. affine Rough Horsetail
Gentianaceae (Gentian Family)
Equisetum sylvaticum Woodland Horsetail
Gentiana andrewsii Closed Gentian
Dryopteridaceae (Wood Fern Family)
Gentianopsis crinita Fringed Gentian
Gymnocarpium dryopteris Oak Fern
Sabatia kennedyana Plymouth Gentian
Matteuccia struthiopteris var . pensylvanica
Sabatia stellaris Sea-pink
Ostrich Fern
Geraniaceae (Geranium Family)
Woodsia ilvensis Rusty Woodsia
Geranium bicknellii Bicknell's Geranium
Isoetaceae (Quillwort Family)
Geranium robertianum Herb-Robert
Isoetes echinospora Spiny Quillwort
Grossulariaceae (Gooseberry Family)
Isoetes engelmannii Engelmann's Quillwort
Ribes hirtellum Smooth Gooseberry
Isoetes riparia River Quillwort
Haemodoraceae (Bloodwort Family)
Lycopodiaceae (Clubmoss Family)
Lachnanthes caroliniana Carolina Redroot
Lycopodiella alopecuroides Foxtail Clubmoss
Haloragaceae (Water-milfoil Family)
Lycopodium annotinum Stiff Clubmoss
Myriophyllum alterniflorum Alternate-flowered Water-milfoil
Ophioglossaceae (Adder's-tongue Family)
Myriophyllum pinnatum Pinnate Water-milfoil
Botrychium lanceolatum ssp . angustisegmentum
Proserpinaca pectinata Comb-like Mermaid-weed
Triangle Grape-fern
Iridaceae (Iris Family)
Botrychium matricariifolium Daisyleaf Grape-fern
Sisyrinchium fuscatum Sandplain Blue-eyed Grass
Botrychium simplex Dwarf Grape-fern
Juncaceae (Rush Family)
Ophioglossum pusillum Northern Adder's-tongue
Juncus debilis Weak Rush
Pteridaceae (Maidenhair Fern Family)
Juncaginaceae (Arrow-grass Family)
Pellaea atropurpurea Purple Cliff-brake
Triglochin palustre Arrow-grass
Schizaeaceae (Curly-grass Fern Family)
Lamiaceae (Mint Family)
Lygodium palmatum Climbing Fern
Hedeoma pulegioides American Pennyroyal
Thelypteridaceae (Marsh Fern Family)
Lycopus rubellus Stalked Water-horehound
Phegopteris connectilis Long Beech Fern
Monarda fistulosa Wild Bergamot
Physostegia virginiana False Dragonhead
GYMNOSPERMS
Stachys hyssopifolia Hyssop-leaved Hedge-nettle
Taxaceae (Yew Family)
Lentibulariaceae (Bladderwort Family)
Taxus canadensis Ground Hemlock
Utricularia biflora Two-flowered Bladderwort
Pinaceae (Pine Family)
Utricularia geminiscapa Paired Bladderwort
Larix laricina American Larch
Utricularia gibba Humped Bladderwort
Picea mariana Black Spruce
Utricularia intermedia Flat-leaved Bladderwort
Utricularia minor Small Bladderwort
ANGIOSPERMS
Utricularia resupinata Reversed Bladderwort
Aceraceae (Maple Family)
Utricularia subulata Zigzag Bladderwort
Acer pensylvanicum Striped Maple
Liliaceae (Lily Family)
Acer spicatum Mountain Maple
Aletris farinosa Colicroot
Alismataceae (Water-Plantain Family)
Allium tricoccum Wild Leek
Sagittaria graminea Grass-leaved Arrowhead
Lilium canadense Canada Lily
Sagittaria subulata River Arrowhead
Lilium philadelphicum Wood Lily
Sagittaria teres Slender Arrowhead
Smilacina trifolia 3-leaved False Solomon's Seal
Amaranthaceae (Amaranth Family)
Streptopus roseus Rose Twisted-stalk
Amaranthus pumilus Seabeach Amaranth
Trillium erectum Purple Trillium
Apiaceae (Parsley Family)
Linaceae (Flax Family)
Angelica atropurpurea Large Angelica
Linum intercursum Sandplain Flax
Angelica lucida Seaside Angelica
Linum medium var. texanum Common Yellow Flax
Cryptotaenia canadensis Honewort
Linum sulcatum Grooved Flax
Hydrocotyle verticillata Saltpond Pennywort
Lythraceae (Loosestrifes)
Ligusticum scothicum Scotch Lovage
Rotala ramosior Toothcup
Lilaeopsis chinensis Lilaeopsis
Oleaceae (Ash Family)
Osmorhiza longistylis Anise-root
Fraxinus nigra Black Ash
Ptilimnium capillaceum Mock Bishop's Weed
Onagraceae (Evening-primrose Family)
Taenidia integerrima Yellow Pimpernel
Circaea alpina Small Enchanter's Nightshade
Zizia aptera Heart-leaved Golden Alexanders
Epilobium palustre Marsh Willow-herb
Zizia aurea Golden Alexanders
Ludwigia sphaerocarpa Round-fruited False Loosestrife
Araceae (Arum Family)
Orchidaceae (Orchids)
Orontium aquaticum Golden Club
Arethusa bulbosa Swamp Pink
Araliaceae (Ginseng Family)
Calopogon tuberosus Grass Pink
Aralia racemosa Spikenard
Coeloglossum viride var . virescens Long-bracted Green Orchis
Panax quinquefolius American Ginseng
Corallorhiza maculata Large Coralroot
Asclepiadaceae (Milkweed Family)
Corallorhiza odontorhiza Autumn Coralroot
Asclepias amplexicaulis Blunt-leaved Milkweed
Corallorhiza trifida Early Coralroot
Asclepias exaltata Poke Milkweed
Cypripedium calceolus var . parviflorum Small Yellow Lady-slipper
Asclepias purpurascens Purple Milkweed
Cypripedium calceolus var. pubescens Large Yellow Lady-slipper
Asclepias quadrifolia Four-leaved Milkweed
Isotria medeoloides Small Whorled Pogonia
Asclepias tuberosa Butterfly Milkweed
Liparis lilifolia Lily-leaved Twayblade
Asclepias verticillata Whorled Milkweed
Liparis loeselii Yellow Twayblade
Asteraceae (Aster Family)
Listera cordata Heartleaf Twayblade
Artemisia campestris ssp . caudata Tall Wormwood
Malaxis unifolia Green Adder's-mouth
Aster concolor Eastern Silvery Aster
Galearis spectabilis Showy Orchis
Aster infirmus Cornel-leaved Aster
Platanthera blephariglottis White Fringed Orchid
Aster laevis Smooth Blue Aster
Platanthera ciliaris Yellow Fringed Orchid
Aster macrophyllus Large-leaved
Platanthera flava var . herbiola Pale Green Orchid
Bidens connata Swamp Beggar's-ticks
Platanthera hookeri Hooker's Orchid 0 (1983)
Bidens coronata Tickseed Sunflower
Platanthera hyperborea Northern Green Orchid
Cacalia suaveolens Indian-plantain
Platanthera orbiculata Round-leaved Orchid
Chrysopsis falcata Sickle-leaved Golden Aster
Platanthera orbiculata var . macrophylla Large Round-leaved Orchid
Chrysopsis mariana Maryland Golden Aster
Platanthera psycodes Small Purple Fringed Orchid
Cirsium horridulum Yellow Thistle
Spiranthes lucida Shining Ladies'-tresses
Coreopsis rosea Pink Tickseed
Spiranthes tuberosa Little Ladies'-tresses
Eupatorium aromaticum Snakeroot
Spiranthes vernalis Spring Ladies'-tresses
Eupatorium leucolepis var . novae-angliae New England Boneset
Orobanchaceae (Broom-rape Family)
Gnaphalium purpureum Purple Cudweed
Conopholis americana Squaw-root
Helianthus divaricatus Woodland Sunflower
Oxalidaceae (Wood sorrel Family)
Liatris scariosa var . novae-angliae Northern Blazing Star
Oxalis violacea Violet Wood-sorrel
Prenanthes serpentaria Lion's-foot
Papaveraceae (Poppy Family)
Rudbeckia laciniata Green-headed Coneflower
Sanguinaria canadensis Bloodroot
Sclerolepis uniflora Sclerolepis
Poaceae (Grass Family)
Solidago elliottii Elliott's Goldenrod
Aristida longespica Slim-spike Three-awn
Solidago flexicaulis Zigzag Goldenrod
Aristida purpurascens Purple Needlegrass
Solidago rigida Stiff-leaf Goldenrod
Elymus villosus Downy Wild Rye
Berberidaceae (Barberry Family)
Leptochloa fascicularis var . maritima Saltpond Grass
Caulophyllum thalictroides Blue Cohosh
Oryzopsis pungens Northern Ricegrass
Boraginaceae (Borage Family)
Panicum amarum Panic-grass
Onosmodium virginianum False Gromwell
Panicum philadelphicum Philadelphia Panic-grass
Brassicaceae (Mustard Family)
Panicum rigidulum Long-leaved Panic-grass
Arabis drummondii Rock-cress
Panicum wrightianum Wright's Panic-grass
Arabis missouriensis Missouri Rock-cress
Paspalum setaceum var . psammophilum Tufted Beard-grass
Draba reptans Carolina Whitlow-Grass
Poa languida Weak Bluegrass
Caesalpiniaceae (Caesalpinia Family)
Puccinellia pumila Goosegrass
Senna hebecarpa Wild Senna
Setaria geniculata Bristly Foxtail
Campanulaceae (Bluebell Family)
Sorghastrum nutans Indian Grass
Lobelia dortmanna Water Lobelia
Spartina cynosuroides Salt Reed Cordgrass
Caprifoliaceae (Honeysuckle Family)
Sphenopholis nitida Shining Sphenopholis
Linnaea borealis Twinflower
Sphenopholis obtusata Prairie Wedgegrass
Lonicera caerulea Mountain Fly-honeysuckle
Sphenopholis pensylvanica Swamp Oats
Lonicera dioica Mountain Honeysuckle
Sporobolus asper Tall Dropseed
Sambucus racemosa var . pubens Red-berried Elderberry
Tripsacum dactyloides Northern Gama-grass
Triosteum aurantiacum Wild Coffee
Zizania aquatica Wild Rice
Triosteum perfoliatum Feverwort
Podostemaceae (River-weed Family)
Viburnum alnifolium Hobblebush
Podostemum ceratophyllum Riverweed
Viburnum nudum var . nudum Swamp Haw
Polygalaceae (Milkwort Family)
Caryophyllaceae (Pink Family)
Polygala cruciata Cross-leaved Milkwort
Arenaria caroliniana Pine Barren Sandwort
Polygala verticillata Whorled Milkwort
Arenaria groenlandica var . glabra Smooth Sandwort
Polygonaceae (Buckwheat Family)
Arenaria stricta Rock Sandwort
Polygonum glaucum Seabeach Knotweed
Honckenya peploides var . robusta Seabeach Sandwort
Polygonum hydropiperoides var. setaceum
Silene stellata Starry Campion
Strigose Knotweed
Spergularia canadensis Northern Sand-spurrey
Portulaceae (Purslane Family)
Chenopodiaceae (Goosefoot Family)
Claytonia virginica Meadow Beauty
Atriplex glabriuscula Smooth Orache
Potamogetonaceae (Pondweed Family)
Chenopodium leptophyllum Goosefoot
Potamogeton confervoides Alga-pondweed
Cistaceae (Rock-rose Family)
Potamogeton pusillus var . gemmiparus Slender Pondweed
Helianthemum dumosum Bushy Rockrose
Primulaceae (Primrose Family)
Helianthemum propinquum Low Rockrose
Glaux maritima Sea Milkwort
Hudsonia ericoides Golden Heather
Hottonia inflata Featherfoil
Clusiaceae (St. John's-wort Family)
Pyrolaceae (Shinleaf Family)
Hypericum adpressum Creeping St. John's-wort
Moneses uniflora One-flowered Wintergreen
Cuscutaceae (Dodder Family)
Pyrola chlorantha Green Pyrola
Cuscuta coryli Hazel-dodder
Pyrola secunda One-sided Pyrola
Cornaceae (Dogwood Family)
Ranunculaceae (Buttercup Family)
Cornus rugosa Round-leaved
Actaea rubra Red Baneberry
Cyperaceae (Sedge Family)
Anemone cylindrica Long-fruited Anemone
Carex alata Winged Sedge
Anemone virginiana Large Anemone
Carex albicans Covered Sedge
Anemonella thalictroides Rue Anemone
Carex buxbaumii Buxbaum's Sedge
Clematis occidentalis Purple Clematis
Carex collinsii Collins' Sedge
Hepatica americana Hepatica
Carex cumulata Piled Sedge
Ranunculus allegheniensis Allegheny Crowfoot
Carex exilis Bog Sedge
Ranunculus ambigens Water-plantain Spearwort
Carex limosa Mud Sedge
Ranunculus cymbalaria Seaside Buttercup
Carex mitchelliana Mitchell's Sedge
Ranunculus flabellaris Yellow Water-crowfoot
Carex pedunculata Long-stalked Sedge
Ranunculus hispidus var. hispidus Hispid Buttercup
Carex polymorpha Variable Sedge
Ranunculus micranthus Small-flowered Crowfoot
Carex schweinitzii Schweinitz's Sedge
Ranunculus sceleratus Cursed Crowfoot
Carex sparganioides Burreed-like Sedge
Ranunculus trichophyllus var . calvescens White Water-crowfoot
Carex sterilis Sterile Sedge
Thalictrum revolutum Purple Meadow-rue
Carex striata var . brevis Walter's Sedge
Rosaceae (Rose Family)
Cyperus odoratus Fragrant Umbrella-sedge
Agrimonia pubescens Hairy Agrimony
Cyperus squarrosus Awned Umbrella-sedge
Dalibarda repens Dewdrop
Eleocharis equisetoides Horsetail Spike-rush
Geum laciniatum Hairy Herb-Bennet
Eleocharis fallax Deceitful Spike-rush
Potentilla tridentata Three-toothed Cinquefoil
Eleocharis melanocarpa Black-fruited Spike-rush
Prunus pumila var . cuneata Sand Cherry
Eleocharis rostellata Small-beaked Spike-rush
Sanguisorba canadensis Canadian Burnet
Eleocharis tricostata Three-angled Spike-rush
Rubiaceae (Madder Family)
Eriophorum gracile Slender Cotton-grass
Hedyotis longifolia Long-leaved Bluets
Eriophorum vaginatum var . spissum Hare's Tail
Salicaceae (Willow Family)
Eriophorum viridicarinatum Bog Cotton-grass
Populus heterophylla Swamp Cottonwood
Fuirena pumila Umbrella Grass
Salix pedicellaris Bog Willow
Lipocarpha micrantha Tiny-flowered Sedge
Saururaceae (Lizard's-tail Family)
Rhynchospora inundata Inundated Horned Rush
Saururus cernuus Lizard's-tail
Rhynchospora macrostachya Tall Beaked Rush
Saxifragaceae (Saxifrage Family)
Rhynchospora scirpoides Long-beaked Bald Rush
Parnassia glauca Grass-of-Parnassus
Rhynchospora torreyana Torrey's Beaked Rush
Penthorum sedoides Ditch Stonecrop
Scirpus etuberculatus Swamp Bulrush
Saxifraga pensylvanica Swamp Saxifrage
Scirpus hudsonianus Northern Cotton-grass
Saxifraga virginiensis Early Saxifrage
Scirpus longii Long's Bulrush
Scheuchzeriaceae (Pod-grass Family)
Scirpus maritimus Saltmarsh Bulrush
Scheuchzeria palustris Pod-grass
Scirpus smithii Smith's Bulrush
Scrophulariaceae (Figwort Family)
Scirpus subterminalis Water Bulrush
Agalinis acuta Sandplain Gerardia
Scirpus torreyi Torrey's Bulrush
Agalinis tenuifolia Slender Gerardia
Scleria pauciflora Carolina-whipgrass
Castilleja coccinea Painted Cup
Scleria reticularis Reticulated Nut-rush
Gratiola virginiana Virginia Hedge-hyssop
Scleria triglomerata Whipgrass
Limosella subulata Mudwort
Droseraceae (Sundew Family)
Penstemon digitalis Tall White Beard-tongue
Drosera filiformis Thread-leaved Sundew
Penstemon hirsutus Northeastern Beard-tongue
Elatinaceae (Waterwort Family)
Scrophularia lanceolata Hare Figwort
Elatine triandra var. americana American Waterwort
Scrophularia marilandica Maryland Figwort
Ericaceae (Heath Family)
Ulmaceae (Elm Family)
Andromeda glaucophylla Bog Rosemary
Ulmus rubra Slippery Elm
Gaultheria hispidula Creeping Snowberry
Violaceae (Violet Family)
Gaylussacia dumosa var . bigeloviana Dwarf Huckleberry
Viola canadensis Canada Violet
Kalmia polifolia
Viola palmata Palmate-leaved Violet
Lyonia mariana Staggerbush
Viola pubescens Smooth Yellow Violet
Rhododendron periclymenoides Pinxter-flower
Viola rotundifolia Round-leaved Yellow Violet
Fabaceae (Bean Family)
Viscaceae (Christmas-mistletoe Family)
Crotalaria sagittalis Rattlebox
Arceuthobium pusillum Dwarf Mistletoe
Desmodium ciliare Small-leaved Tick-trefoil
Xyridaceae (Yellow-eyed Grass Family)
Desmodium sessilifolium Sessile-leaved Tick-trefoil
Xyris montana Northern Yellow-eyed Grass
Lupinus perennis Wild Lupine
Adapted from: RARE NATIVE PLANTS OF RHODE ISLAND - January, 2002 [FULL DOCUMENT]
Strophostyles umbellata Pink Wild Bean
Tephrosia virginiana Goat's-rue