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<br />Soil Investigations for Data Collection in the Delta <br />Initial Study/Proposed Mitigated Negative Declaration 107 <br />non-native plants (CNPS 2019). This species has moderate potential to occur <br />within the Study Area based on the presence of potentially suitable habitat. <br />Implementation of Mitigation Measures MM BIO-1b, MM BIO-18, and MM BIO-19 <br />would reduce potential impacts to slough thistle to: Less than Significant with <br />Mitigation Incorporated. <br />Small-flowered morning-glory (Convolvulus simulans) <br />Small-flowered morning glory has a CRPR of 4.2 but is not listed under FESA or <br />CESA. This species is an annual herb in the morning glory family, and it blooms <br />from March to July (CNPS 2019). The current range of this species in California <br />includes the southern Sierra Foothills, San Joaquin Valley, San Francisco Bay <br />Area, inner and outer South Coast Ranges, South Coast, northern and southern <br />Channel Islands, Western Transverse Ranges, and Peninsular Ranges excluding <br />the San Jacinto Mountains. It typically grows in openings in chaparral, coastal <br />scrub, and valley and foothill grassland (CNPS 2019). The microhabitat for small- <br />flowered morning glory includes wet clay and serpentine ridges (CDFW 2019). <br />Threats to this species include development, vehicle traffic, and non-native <br />plants. Potentially suitable habitat for small-flowered morning-glory is present <br />within the Study Area. However, this species has low potential to occur within the <br />Study Area because the Study Area is located on the edge of its known range so <br />potential impacts would be less than significant. <br />Implementation of Mitigation Measures MM BIO-18 and MM BIO-19 would further <br />avoid, minimize and/or reduce the potential for impacts to small-flowered <br />morning-glory. <br />Hoover's cryptantha (Cryptantha hooveri) <br />Hoover’s cryptantha has a CRPR of 1A but is not listed under FESA or CESA. <br />This species is an annual herb in the borage family, and it blooms from April to <br />May (CNPS 2019). It is endemic to California, and its current range includes the <br />northern and central San Joaquin Valley. It is presumed extirpated in Contra <br />Costa, Madera, and Stanislaus counties, and has not been detected anywhere <br />within its known range since 1937 (CNPS 2019; Jepson Flora Project 2019). It <br />typically grows in inland dunes and valley and foothill grassland (CNPS 2019). <br />The microhabitat for Hoover’s cryptantha includes coarse sand (CDFW 2019). <br />Threats to this species include development and habitat conversion (CDFW <br />2019). This species has moderate potential to occur within the Study Area based <br />on the presence of potentially suitable habitat. <br />Implementation of Mitigation Measures MM BIO-18 and MM BIO-19 would <br />reduce potential impacts to Hoover’s cryptantha to: Less than Significant with <br />Mitigation Incorporated. <br />Peruvian dodder (Cuscuta obtusiflora var. glandulosa)