Table A-1: species specific Survey Period and TRANSECT WIDTH SURVEY CLEARANCE PERIOD, SURVEY GENERALLY TRANSECT WHEN A WIDTH WITHIN PLANT IS POPULATION FLOWERING CORE AREASa, (Dates will vary depending on season, (transects should be closer SCIENTIFIC COMMON reference sites should together in more densely NAME NAME SUITABLE HABITAT DESCRIPTION be checked) vegetated areas) Section 7 Range in Colorado, based on modeling done by CNHP in – Montezuma County Soils large sheets of exfoliating whitish-tan colored sandstone – Geology rimrock outcrops of the Point Lookout and Cliffhouse – members of the Mesa Verde sandstone Aspect various – flat or gently sloping Slope – Mancos Elevation Average 1,854 m (6,083 ft) Astragalus – April - May 3-7 meters milkvetch Habitat Sandstone ledges and mesa tops in cracks or shallow humillimus – depressions (tinajas) that accumulate sandy soils and rainfall Plant Community pinyon-juniper woodland and desert scrub – communities, vegetation total cover less than 5% Common Associates Achnatherum hymenoides, Guterrezia – sarothrae, Yucca angustisima, Artemisia tridentata, Fraxinums and anomola, Ipomopsis roseata, Cercocarpus intricatus, Brickellia var. microphyla scabra
Table A-1: species specific Survey Period and TRANSECT WIDTH SCIENTIFIC NAME COMMON NAME SURVEY PERIOD, GENERALLY WHEN A PLANT IS FLOWERING (Dates will vary depending on season, reference sites should be checked) CLEARANCE SURVEY TRANSECT WIDTH WITHIN POPULATION CORE AREASa, (transects should be closer together in more densely vegetated areas) SUITABLE HABITAT DESCRIPTION Astragalus humillimus Mancos milkvetch April - May 3-7 meters Section 7 Range – in Colorado, based on modeling done by CNHP in Montezuma County Soils – large sheets of exfoliating whitish-tan colored sandstone Geology – rimrock outcrops of the Point Lookout and Cliffhouse members of the Mesa Verde sandstone Aspect – various Slope – flat or gently sloping Elevation – Average 1,854 m (6,083 ft) Habitat – Sandstone ledges and mesa tops in cracks or shallow depressions (tinajas) that accumulate sandy soils and rainfall Plant Community – pinyon-juniper woodland and desert scrub communities, vegetation total cover less than 5% Common Associates – Achnatherum hymenoides, Guterrezia sarothrae, Yucca angustisima, Artemisia tridentata, Fraxinums anomola, Ipomopsis roseata, Cercocarpus intricatus, and Brickellia microphyla var. scabra
Plant_Guidance_030613.docx