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A perennial stream is usually represented by a solid blue line on a USGS <br /> 7 1/2 minute quad map. <br /> 4. HABITAT DESCRIPTION AND SITES REQUIRING A SURVEY <br /> Soiranthes is typically found associated with alluvial deposits of <br /> silty, sandy, gravelly, or cobbly soil . The species may occasionally also be <br /> found in highly organic soils or peat. The species seems to prefer well <br /> drained soils with fairly high moisture content (soil around the roots will <br /> form a soft ball) . Soils may exhibit some gleying or mottling but are <br /> generally not strongly anaerobic. Soiranthes is found in some heavily <br /> disturbed sites, for example, old gravel mines that have since been developed <br /> into wetlands, and along well traveled footpaths built on old berms. The <br /> species is also found in grazed pastures with introduced pasture grasses. <br /> Soiranthes is found with grasses, sedges and rushes, shrubs, and <br /> riparian trees such as willow species. It rarely occurs in deeply shaded <br /> sites and prefers partially shaded open glades or pastures and meadows in full <br /> sunlight. Common associated species on the Front Range include: <br /> a. Horsetail (Eauisetum spp. ) <br /> b. Milkweed (Ascleoias incarnata) <br /> c. Verbena (Verbena hastata) <br /> d. Agalinis (Aoalinis tenuifolia) <br /> e. Lobelia (Lobelia siohilitica) <br /> f. Blue-eyed grass (Sisyrinchium spp. ) <br /> g. Triglochin (Triolochin spp.) <br /> h. Carpet bentgrass (Aarostis stolonifera) <br /> i . Reedgrass (Calamaarostis spp. ) <br /> j. Goldenrod (Solidaao spp. ) <br /> Sites below 6,500 feet elevation occurring within the areas described in <br /> Section 3 exhibiting the following features shall be surveyed for Soiranthes <br /> diluvialis: <br /> a. seasonally high water table (to within 18 inches of the soil surface <br /> for at least 1 week sometime during the growing season, growing season <br /> defined as when soil temperatures are above 41 degrees F.) ; <br /> b. in or near wet meadows, stream channels, or floodplains; <br /> c. vegetation falling into the Facultative Wet or Obligate Wet <br /> classification, including introduced pasture grasses; <br /> d. jurisdictional wetlands as specified under the Clean Water Act. <br /> Heavily grazed and weedy sites shall be surveyed for the orchid if they <br /> otherwise meet the criteria indicating potential suitability as Soiranthes <br /> habitat as listed above. <br /> 3 <br /> I <br />