Listing Criteria. The following factors shall be considered for listing a plant species as threatened: Whether the species has experienced a substantial decline in Maryland, and if the decline continues, the species is likely to become endangered; Whether there has been a steady widespread loss of the species’ essential habitat; or Whether the species has been listed as endangered but it has been shown that protection measures taken have significantly reduced the chances of the species becoming extirpated from Maryland. Permits. The permit procedures to be followed are set forth in Regulation .03 of this chapter. The following apply: Permits shall be issued only for scientific research designed to enhance the recovery of the species or population; A person may not: Export, possess, process, sell, offer for sale, deliver, carry, transport, or ship by any means any threatened plant species except by a special permit from the Director; Take any threatened plant species from State property except by special permit from the Director; or Take any threatened plant species from private property without the written permission of the landowner. The following plant species are considered threatened throughout Maryland unless a smaller range is indicated: Climbing fumitory (Adlumia fungosa); Purple giant-hyssop (Agastache scrophulariifolia); Running serviceberry (Amelanchier humilis); Nantucket shadbush (Amelanchier nantucketensis); Single-head pussytoes (Antennaria solitaria); Wand-like three-awn grass (Aristida virgata); Bradley’s spleenwort (Asplenium bradleyi); Ozark milkvetch (Astragalus distortus); Wild false indigo (Baptisia australis); Buxbaum’s sedge (Carex buxbaumii); Inflated sedge (Carex vesicaria); Velvety sedge (Carex vestita); Leatherleaf (Chamaedaphne calyculata); Red turtlehead (Chelone obliqua); Giant-seed goosefoot (Chenopodiastrum simplex); Clinton lily (Clintonia borealis); Bogfern (Coryphopteris simulata); Wild bleedinghearts (Dicentra eximia); Tall swamp witchgrass (Dichanthelium scabriusculum); Eastern leatherwood (Dirca palustris); Tobaccoweed (Elephantopus tomentosus); Parker’s pipewort (Eriocaulon parkeri); White trout-lily (Erythronium albidum); White-bract thoroughwort (Eupatorium leucolepis); Fringe-top bottle gentian (Gentiana andrewsii); McDowell’s sunflower (Helianthus occidentalis); Glade fern (Homalosorus pycnocarpus); Featherfoil (Hottonia inflata); Goldenseal (Hydrastis canadensis); Largeleaf waterleaf (Hydrophyllum macrophyllum); Coppery St. John’s-wort (Hypericum denticulatum); Pipe vine (Isotrema macrophyllum); Sandplain flax (Linum intercursum); Sundial lupine (Lupinus perennis); Climbing fern (Lygodium palmatum); Carolina anglepod (Matelea carolinensis); Three-flower melicgrass (Melica nitens); Evergreen bayberry (Morella carolinensis); White-grained mountain-ricegrass (Oryzopsis asperifolia); Walter’s paspalum (Paspalum dissectum); Horse-tail paspalum (Paspalum fluitans); Coville’s phacelia (Phacelia covillei); Roundleaf fameflower (Phemeranthus teretifolius); White-fringe orchis (Platanthera blephariglottis); Yellow-fringe orchid (Platanthera ciliaris); Large purple-fringe orchis (Platanthera grandiflora); Purple fringeless orchid (Platanthera peramoena); Marsh fleabane (Pluchea camphorata); Bog Jacob’s-ladder (Polemonium vanbruntiae); Crossleaf milkwort (Polygala cruciata); Racemed milkwort (Polygala polygama); Seneca snakeroot (Polygala senega); Allegheny plum (Prunus alleghaniensis); Whorled mountainmint (Pycnanthemum verticillatum); Shumard oak (Quercus shumardii); Hairy snoutbean (Rhynchosia tomentosa); Long-beaked bald rush (Rhynchospora scirpoides); Torrey’s beakrush (Rhynchospora torreyana); Michaux’s stitchwort (Sabulina michauxii); Engelmann’s arrowhead (Sagittaria engelmanniana); Canada burnet (Sanguisorba canadensis); Northern pitcherplant (Sarracenia purpurea); One-flower sclerolepis (Sclerolepis uniflora); Shale barren skullcap (Scutellaria leonardii); Veined skullcap (Scutellaria nervosa); Cliff stonecrop (Sedum glaucophyllum); Long-stalk greenbrier (Smilax pseudochina); Lake Ontario goldenrod (Solidago racemosa); Showy goldenrod (Solidago speciosa); Swamp wedgescale (Sphenopholis pensylvanica); Lance-leaf loosestrife (Steironema hybridum); Eastern featherbells (Stenanthium gramineum); Rosy twisted-stalk (Streptopus lanceolatus); Snowberry (Symphoricarpos albus); Mountain parsley (Taenidia montana); Canadian yew (Taxus canadensis); Spiked hoary-pea (Tephrosia spicata); Northern white cedar (Thuja occidentalis); Kate’s Mountain clover (Trifolium virginicum); Virginia least trillium (Trillium pusillum var.virginianum); Purple bladderwort (Utricularia purpurea); Small cranberry (Vaccinium oxycoccos); and Rusty woodsia (Woodsia ilvensis).