Inventory of plants, plant communities and herpetofauna of concern in the vicinity of the Snow-Talon burn, Helena National Forest E6119C2F-7233-4466-BB17-9B16C690DA7B Year: 2005 lesser coverages of Sitka alder, thinleaf huckleberry (Vaccinium membranaceum), prickly current and rose spiraea. Beneath the dense shrub canopy forbs are not particularly abundant but are consistently present. Those indicative of high moisture status include claspleaf twistedstalk, green false hellebore (Veratrum viride), arrowleaf ragwort (Senecio triangularis), Lyall's angelica, softleaf sedge (Carex disperma); m
Inventory of plants, plant communities and herpetofauna of concern in the vicinity of the Snow-Talon burn, Helena National Forest E6119C2F-7233-4466-BB17-9B16C690DA7B Year: 2005 lesser coverages of Sitka alder, thinleaf huckleberry (Vaccinium membranaceum), prickly current and rose spiraea. Beneath the dense shrub canopy forbs are not particularly abundant but are consistently present. Those indicative of high moisture status include claspleaf twistedstalk, green false hellebore (Veratrum viride), arrowleaf ragwort (Senecio triangularis), Lyall's angelica, softleaf sedge (Carex disperma); more generalist forbs included threeleaf foamflower (Tiarella trifoliata), queencup beadlily, Sitka valerian {Valeriana sitchensis), Hitchcock's smooth woodrush (Luzula glabrata var. hitchcockii), northwestern twayblade (Listera caurina), and northern licorice-root. This hygric to hydric association transitions upslope to a mesic forest typified by the Engelmann spruce - subalpine fir / rusty menziesia / queencup beadlily association. The most unique aspect of this area is the herb- dominated community (Figure 5) that occurs just upslope and to the west of the creek occupying deep and subirrigated (and/or seasonally saturated) silty soils derived from alluvium and coUuvium (based on vegetation composition alone this would be a wetland but hydrology is unknown and soils were neither mottled nor gleyed). This community would key to the arrowleaf ragwort herbaceous vegetation plant association but the Porcupine Basin representations are considerably more diverse than the modal conception of this association. Although arrowleaf ragwort is generally dominant (30-50 canopy cover), other forbs have up to 20 cover including subalpine fleabane (Erigeron peregrinus), Lyall's angelica, green false hellebore, western sweetroot (Osmorhiza occidentalis), sweetscented bedstraw, pioneer violet {Viola glabella), beargrass (Xerophyllum tenax), common cowparsnip (Heracleum maximum), broadleaf arni
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