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Appendix D-2 Potential for Special-Status Plant Species to Occur Within the Project Site, Envicom Corporation, (March 2015)

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Appendix D-2 Potential for Special-Status Plant Species to Occur within the Project Site, Envicom Corporation, (March 2015) APPENDIX D-2 Potential for Special-Status Plant Species to Occur within the Project Site (March 2015) Growth Form Name Federal State CNPS CVMSHCP Potential for On-site Habitat Requirement Blooming Scientific Name Status Status List Species? Occurrence* Period Chaparral sand- None None 1B.1 No Sandy soils in chaparral, coastal Annual herb; Low potential to occur. Not verbena scrub, and desert dune plant January - observed during surveys, and the Abronia villosa communities below an elevation of September project site does not provide the var. aurita 1,600 meters (m). species preferred habitat. Parish’s Onion None None 4.3 No Species occurs on rocky soils in Perennial Low potential to occur. Not Allium parishii Joshua tree woodland, Mojavean bulbiferous herb; observed during surveys and the desert scrub, and pinyon and juniper April - May project site is well below the woodland. Threatened by mining elevation range for this species. and vehicles. Elevation ranges from 900 – 1,465m. San Bernardino None None 1B.2 No Species often found on granitic or Perennial herb; Low potential to occur. No milk-vetch carbonate within Joshua tree April - June suitable habitat on site. Not Astragalus woodland and Pinyon and juniper observed during surveys and the bernardinus woodland. Elevation ranges from 900 project site is well below the – 2,000m. elevation range for this species. Coachella Valley Endanger None 1B.2 Yes The Coachella Valley milk- vetch Perennial herb; Low potential to occur. The milk-vetch ed occurs in dunes and sandy flats, February – May. project site contains a limited Astragalus along the disturbed margins of sandy amount of potentially suitable lentiginosus var. washes, and in sandy soils along habitat for Coachella Valley milk- coachellae roadsides, in areas formerly occupied vetch. The project site is outside by undisturbed sand dunes. Within the known range of this variety of the sand dunes and sand fields, this lentiginosus. milk-vetch tends to occur in the coarser sands at the margins of dunes, not in the most active blow sand areas. As this species is strongly affiliated with sandy substrates, it may occur in localized pockets where sand has been deposited by wind or by active washes. It may also occur in sandy substrates in creosote bush scrub, not directly associated with sand dune habitats. Paradise Valley Specific Plan Appendix D-2 - 1 Envicom Corporation Growth Form Name Federal State CNPS CVMSHCP Potential for On-site Habitat Requirement Blooming Scientific Name Status Status List Species? Occurrence* Period Gravel milk-vetch None None 2B.2 No The gravel milk-vetch usually occurs Annual/Perennial Low potential to occur. Not Astragalus on sandy, sometimes gravelly soils herb; February - observed during surveys. Nearest sabulonum associated with flats, washes, and June. historic recorded occurrences are roadsides. The species occurs in from 1939 and 1985 and were desert dunes, Mojavean desert scrub, located “2 or 3 miles east of and Sonoran desert scrub. This Mecca.” The 1985 occurrence species is threatened by solar energy was extirpated (CNPS 2015). development. Possibly threatened by vehicles, recreational activities, and non-native plants. Triple-ribbed Endanger None 1B.2 Yes Associated with rocky slopes in Perennial herb; Low potential to occur. Known milk-vetch ed canyons and along boulder strewn, February – May. locations in the project region are Astragalus dry, sandy desert washes with west and off‐site in the tricarinatus creosote bush and encelia species in Whitewater River watershed. Joshua tree woodlands. Also occurs While habitat is present on site, in sandy/gravelly soils in Sonoran no Astragalus species, including desert scrub/creosote bush scrub. common taxa, were observed during field surveys. California ayenia None None 2B.3 No The species is found on rocky areas Perennial herb; Low potential to occur. Not Ayenia compacta in Mojavean desert scrub and March – April. observed during surveys but Sonoran desert scrub. Elevation habitat is present. Nearest historic ranges from 150 – 1,095m. recorded occurrences are from 1941 and located in the vicinity of Lost Palms Canyon and Munsen Canyon, Eagle Mountains, and Joshua Tree National Park. Las Animas None None 2B.3 No Found on narrow, steep, rocky Perennial Low potential to occur. Not colubrina ravines or washes within Sonoran deciduous shrub; observed during surveys. Colubrina desert scrub and Mojavean desert April – June. californica scrub. Elevation ranges from 10 – 1,000m. Paradise Valley Specific Plan Appendix D-2 - 2 Envicom Corporation Growth Form Name Federal State CNPS CVMSHCP Potential for On-site Habitat Requirement Blooming Scientific Name Status Status List Species? Occurrence* Period Foxtail cactus None None 4.3 No Occurs in Mojavean desert scrub and Perennial stem Moderate potential to occur. Not Coryphantha Sonoran desert scrub Found in sandy succulent; April observed during surveys, but a alversonii or rocky habitats, usually granitic. – June. closely related species Also found in gravelly slopes and (Mammillaria tetrancistra) was dissected alluvial fans. Elevation observed, and pockets of suitable ranges from 75 – 1,525m. habitat are present. Ribbed cryptantha None None 4.3 No Found within Mojavean and Sonoran Annual herb; Low to Moderate potential to Cryptantha desert scrub and desert dunes with February – May. occur. Not observed during costata sandy soils. Elevation ranges from - surveys but habitat is present. 60 – 500m. Winged None None 4.3 No Found within Mojavean and Sonoran Annual herb; Low to Moderate potential to cryptantha desert scrub. Elevation ranges from - March - April. occur. Not observed during Cryptantha 100 – 1,690m. surveys but habitat is present. holoptera California ditaxis None None 3.2 No Found within Sonoran desert scrub Perennial herb; Moderate potential to occur. Not Ditaxis serrata on sandy washes and alluvial fans of March – observed during surveys but var. californica the foothills and lower desert slopes. December. habitat is present. Elevation ranges from 30 – 1,000m. Joshua Tree poppy None None 4.3 No Found in desert washes, flats, and Annual herb; Moderate potential to occur. Not Eschscholzia slopes; sandy, gravelly, and/or rocky February – June. observed during surveys, and androuxii soils. The species occurs in Joshua although the project site does not tree woodland and Mojavean desert provide the species preferred scrub. Elevation ranges from 585 – habitat marginally suitable habitat 1,685m. is present. Wright’s None None 2B.3 No Species occurs in dry openings, rock Moss Low potential to occur. No jaffueliobryum crevices, and carbonate. The species suitable habitat on site. Not moss is found in alpine dwarf scrub, observed during surveys, and the Jaffueliobryum Mojavean desert scrub, and Pinyon project site does not provide the wrightii and juniper woodland. Elevation species preferred habitat. ranges from 160 – 2,500m. Spearleaf None None 2B.3 No Found in Mojavean desert scrub, Perennial herb; Low potential to occur. Sonoran Matelea parvifolia creosote desert scrub, and Sonoran March – May. desert scrub habitat is present on desert scrub on dry, rocky ledges and the proposed project site, but this slopes. Elevation ranges from 440 – species was not observed during 1,095m. field surveys. Paradise Valley Specific Plan Appendix D-2 - 3 Envicom Corporation Growth Form Name Federal State CNPS CVMSHCP Potential for On-site Habitat Requirement Blooming Scientific Name Status Status List Species? Occurrence* Period Spiny-hair blazing None None 2B.1 No Found in sandy, gravelly, slopes, and Annual herb; Low potential to occur. Suitable star Mentzelia washes within Mojavean desert March – May. habitat is present but this species tricuspis scrub. Elevation ranges from 150 – was not observed during surveys 1,280m. and the species has not been documented in close vicinity to the project site. Slender None None 2B.2 No Occurs in coastal dunes, desert Annual herb; Low potential to occur. Not cottonheads dunes, or Sonoran desert scrub, March – May. observed during surveys. Nearest Nemacaulis within dunes or sand habitat, 0 – 560 historic recorded occurrences are denudata var. m. from 1922 and the exact location gracilis is unknown but mapped by CNDDB as best guess at Mecca, which is 9 miles southwest of the project site (CNDDB 2015). Thorny milkwort None None 2B.3 No Occurs in chenopod scrub, Joshua Perennial shrub; Low potential to occur. The Polygala tree woodland and Pinyon and May – August. project site does not contain acanthoclada juniper woodland. Elevation ranges suitable habitat to support thorny from 760 – 2285m. milkwort. The project site is also outside the known range of this species. Latimer's None None 1B.2 No Rocky or sandy substrate, often of Annual herb; Low potential to occur. Desert woodland-gilia granitic composition, within March – June. scrub habitat is present on the Saltugilia latimeri chaparral, Mojavean desert scrub, project site but this species was pinyon-juniper woodland, and not observed during field surveys. seasonal washes. Elevation ranges from 400 – 1,900 m. Orocopia sage None None 1B.3 Yes Found in Mojavean desert scrub and Perennial Low to Moderate potential to Salvia greatae Sonoran desert scrub. The preferred evergreen shrub; occur. Not observed during habitat of Orocopia sage is in March – April. surveys but habitat is present. gravelly or rocky soils on broad bajadas or fans, often adjacent to desert washes, or on the rocky slopes of canyons. It may occur on alluvial terraces and sandy or rocky benches elevated above the flood plain of a wash. The species does not appear to Paradise Valley Specific Plan Appendix D-2 - 4 Envicom Corporation Growth Form Name Federal State CNPS CVMSHCP Potential for On-site Habitat Requirement Blooming Scientific Name Status Status List Species? Occurrence* Period occur within the immediate wash zone. Coves’ cassia None None 2B.2 No This perennial shrub is found in open Perennial herb; Low potential to occur.
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