Since the inception of the Botanical Assessment Working Group in 2011, 22 species re-ranking assessments have been conducted. In addition, more than 300 taxa that previously had a rank of SNR have now been ranked. A summary of the reassessed taxa, as well as those that were previously ranked SNR and have now been placed on the tracking list can be found below.
Please note that every effort has been made to ensure that this list is accurate; however, the lists provided on our lists page are the final authority for this type of information.
For more information on the ranking process, please see our ranking page. If you have a plant taxon that you believe should be a priority for a rank reassessment, please contact the SKCDC botanist.
Taxa with S-ranks Recently Reassessed or Recently Added to the Tracking List
| Scientific Name | Common Name | New S-rank | Old S-rank | Notes |
| Ambrosia acanthicarpa | Bur Ragweed | S2S3 | S2 | Remains on the tracking list |
| Andropogon gerardii | Big Bluestem | S4 | S3S4 | Remains on the tracking list because it is a host plant for the Dakota Skipper |
| Arabis boivinii | Boivin’s Rockcress | S1? | SNR | Newly added to the tracking list |
| Armeria maritima ssp. interior | Athabasca Thrift | S1S2 | S1S2 | Remains on the tracking list |
| Astragalus gracilis | Slender Milk-vetch | S1 | SNR | Newly added to the tracking list |
| Astragalus lotiflorus | Low Milk-vetch | S3 | S3 | Remains on the tracking list |
| Betula nana ssp. exilis | Arctic Dwarf Birch | S1 | SNR | Newly added to the tracking list |
| Bromus pubescens | Canada Brome | S1 | SNR | Newly added to the tracking list |
| Buchloe dactyloides | Buffalograss | S1 | S1 | Remains on the tracking list |
| Calamagrostis lapponica var. nearctica | Lapland Reed-grass | S3 | SNR | Newly added to the tracking list |
| Castilleja sessiliflora | Downy Paintbrush | S3S4 | S5 | Newly added to the tracking list |
| Cerastium alpinum var. alpinum | Alpine Mouse-ear Chickweed | S1 | SNR | Newly added to the tracking list |
| Chenopodium subglabrum | Smooth Goosefoot | S3 | S2 | Remains on the tracking list |
| Coeloglossum viride var. virescens | Long-bracted Green Bog Orchid | S4S5 | S3S4 | Removed from the tracking list |
| Corallorhiza maculata var. maculata | Spotted Coralroot | S1S2 | SNR | Newly added to the tracking list |
| Corispermum americanum var. americanum | American Bugseed | S1 | S2 | Remains on the tracking list |
| Cyperus acuminatus | Short-point Flatsedge | S1 | SNR | Newly added to the tracking list |
| Cyperus schweinitzii | Sand Nut Grass | S3 | S2 | Remains on the tracking list |
| Cyperus squarrosus | Awned Cyperus | S2 | SNR | Newly added to the tracking list |
| Cypripedium parviflorum var. makasin | Small Yellow Lady's Slipper | S3S4 | S2S4 | Remains on the tracking list |
| Dalea villosa var. villosa | Hairy Prairie-clover | S2 | S1 | Remains on the tracking list |
| Danthonia californica var. americana | California Wild Oat Grass | S2 | SNR | Newly added to the tracking list |
| Dichanthelium perlongum | Long-stalked Panic-grass | S1 | SNR | Newly added to the tracking list |
| Dichanthelium xanthophysum | Slender Dichanthelium | S1 | SNR | Newly added to the tracking list |
| Eleocharis compressa | Flat-stemmed Spike-rush | S2 | SNR | Newly added to the tracking list |
| Eleocharis obtusa | Blunt Spike-rush | S2 | SNR | Newly added to the tracking list |
| Eleocharis parvula var. anachaeta | Dwarf Spike-rush | S1 | SNR | Newly added to the tracking list |
| Eleocharis tenuis var. borealis | Slender Spike-rush | S2 | SNR | Newly added to the tracking list |
| Elymus canadensis var. brachystachys | Short-spiked Canada Wild-rye | S1 | SNR | Newly added to the tracking list |
| Elymus lanceolatus ssp. psammophilus | Sand-dune Wheatgrass | S2S3 | S2 | Remains on the tracking list |
| Hedeoma hispida | Rough Pennyroyal | S4 | S3 | Removed from the tracking list |
| Heuchera flabellifolia var. flabellifolia | Bridger Mountain Alumroot | S1 | SNR | Newly added to the tracking list |
| Impatiens noli-tangere | Yellow Touch-me-not | S2S3 | S3S4 | Remains on the tracking list |
| Isoetes lacustris | Lake Quillwort | S1 | SNR | Newly added to the tracking list |
| Lycopodium hickeyi | Hickey’s Club-moss | S1 | SNR | Newly added to the tracking list |
| Monarda fistulosa var. mollis | Soft Wild Bergamot | S3S4 | SNR | Newly added to the tracking list |
| Muhlenbergia mexicana | Wood Muhly | S1 | SNR | Newly added to the tracking list |
| Nuttallanthus texanus | Texas-toadflax | SH | SNR | Newly added to the tracking list |
| Nymphaea tetragona | Pygmy Water-lily | S1S2 | SNR | Newly added to the tracking list |
| Packera pauciflora | Few-flowered Ragwort | S2 | SNR | Newly added to the tracking list |
| Pellaea glabella var. occidentalis | Western Smooth Cliff-brake | S1S2 | S2 | Remains on the tracking list |
| Penstemon confertus | Yellow Beardtongue | S1 | SNR | Newly added to the tracking list |
| Phegopteris connectilis | Long Beech-fern | S2 | S2 | Remains on the tracking list |
| Plantago elongata spp. elongata | Narrow-leaved Plantain | S4 | S2S3 | Removed from the tracking list |
| Poa fendleriana ssp. fendleriana | Mutton Grass | S2 | SNR | Newly added to the tracking list |
| Polygonatum biflorum var. commutatum | Great Solomon’s Seal | S1 | S2 | Remains on the tracking list |
| Potentilla nivea | Snow Cinquefoil | S1 | SNR | Newly added to the tracking list |
| Ruppia cirrhosa | Widgeon-grass | S3 | SNR | Newly added to the tracking list |
| Ruppia maritima var. rostrata | Ditch-grass | S2 | SNR | Newly added to the tracking list |
| Salix boothii | Booth’s Willow | S1 | SNR | Newly added to the tracking list |
| Salix brachycarpa var. psammophila | Sand-loving Barrenground Willow | S3 | S2S3 | Remains on the tracking list |
| Salix commutata | Undergreen Willow | S1 | SNR | Newly added to the tracking list |
| Salix drummondiana | Drummond’s Willow | S2 | SNR | Newly added to the tracking list |
| Salix glauca var. villosa | Gray-leaved Willow | S3 | SNR | Newly added to the tracking list |
| Salix lasiandra var. caudata | Shining Willow | S1 | SNR | Newly added to the tracking list |
| Schedonnardus paniculatus | Tumble Grass | S3 | S2S3 | Remains on the tracking list |
| Scirpus nevadensis | Nevada Bulrush | S3S4 | SNR | Newly added to the tracking list |
| Scirpus rufus var. neogaeus | Red Club-rush | S2? | SNR | Newly added to the tracking list |
| Shinnersoseris rostrata | Beaked Annual Skeleton-weed | S2 | S2 | Remains on the tracking list |
| Tanacetum huronense var. floccosum | Floccose Tansy | S3 | S2S3 | Remains on the tracking list |
| Townsendia hookeri | Hooker’s Townsendia | S1S2 | SNR | Newly added to the tracking list |
| Typha angustifolia | Narrow-leaved Cattail | SNA | S1? | Removed from the tracking list |
| Wolffia columbiana | Columbia Water-meal | S1 | SNR | Newly added to the tracking list |