Plant resources include forestland, pastureland, hay lands, and rangelands as well as special status plants. For the purposes of this document special status plants include those on the Federal Threatened and Endangered species list as well as the Idaho Native Plant Society list, and Idaho Fish and Game sensitive species list.
Resource concerns associated with grazing lands are improper grazing management and noxious weed infestations. There are over 20 listed noxious weeds in the District. The District encourages integrated pest management strategies.
Conservation treatment is needed on a majority of grazing lands. Planned grazing systems, weed control, cross fencing, stock water developments, re-seeding and deferred grazing are all methods that may be used to maintain areas.
Special Status plants
Twenty-four plants listed as threatened, endangered, or species of concern are located within the District (see table below). The species listed represent known occurrences and do not represent potential distributions within the county.
Plants listed as threatened, endangered or species of concern in the District1.
| Common Name | Scientific Name |
| Bank monkeyflower | Mimulus clivicola |
| Broad fruit mariposa | Calochortus nitidus |
| Constance’s bittercress | Cardamine constancei |
| Dwarf gray rabbit brush | Chrysothamnus nauseosus ssp nanus |
| Douglas’ Clover | Trifolium douglasii |
| Fern leaved desert-parsley | Lomatium dissectum var dissectum |
| Giant Helliborine | Epipactis Gigantea |
| Green band mariposa lily | Calochortus macrocarpus var maculosus |
| Idaho Hawksbeard | Crepis Bakerissp Idahoensis |
| Jessica’s aster | Aster jessicae |
| Palouse Goldenweed | Haplopappus Liatriformis |
| Palouse thistle | Cirsium brevifolium |
| Pipers Milkvetch | Astragulus Riparius |
| Plumed clover | Trifolium plumosum var amplifolium |
| Purple thick-leaved thelypody | Thelypodium lanciniatum var streptanthoides |
| Salmon-flowered desert-parsley | Lomatium salmononiflorum |
| Simpson’s hedgehog cactus | Pediocactus simpsonii var robustior |
| Spacious monkeyflower | Mimulus washingtonensis ssp 1 |
| Spalding’s Silene | Silene Spaldingii |
| Stalk leaved Monkeyflower | Mimulus patulus |
| Sticky Goldenweed | Haplopappus Hirtus Var Sonchifolius |
| Wolf’s currant | Ribes wolfii |
1Idaho Conservation Data Center. 2004. Special Status Plants. Idaho Department of Fish and Game, Boise.
While data regarding these plants is limited, the District encourages land managers to become familiar with the plants and the adoption of practices to protect the plants. One of the long-term resource needs in the District is a comprehensive management plan regarding the plants which identifies potential habitat locations, management needs and protection measures.
Additional sources of information regarding special status plants and native plants.
White Pine Chapter of the Idaho Native Plant Society
Palouse Prairie Foundation
Weeds
Noxious weed species are identified by the Idaho State Department of Agriculture (ISDA). Here is a noxious weed list for Idaho from the Idaho Weed Awareness Campaign website.
The District is part of three cooperative weed management areas: Tri-State Demo, Clearwater Basin, and Palouse.
Figure CWMA illustrates the location of each area within the county.
Figure CWMA. Locations of Idaho’s Cooperative Weed Management Areas2
2Source State of Idaho Noxious Weed Images
A Cooperative Weed Management Area (CWMA) is a distinguishable hydrologic, vegetative, or geographic zone based upon geography, weed infestations, climatic or human-use patterns. A CWMA may be composed of a portion of a county, a county, portions of several counties, or portions of more than one state. CWMAs are formed when the landowners and land managers of a given area come together and agree to work cooperatively to control weeds.