attachment c special status plant survey report b... · pasadena in los angeles county, california...
TRANSCRIPT
ATTACHMENT C
SPECIAL STATUS PLANT SURVEY REPORT
January 20, 2014
Mr. David Rydman, P.E. VIA EMAIL
Carollo Engineers, Inc. [email protected]
199 South Los Robles Avenue, Suite 530
Pasadena, California 91101
Subject: Special Status Botanical Surveys for the Arroyo Seco Canyon Project, City of
Pasadena, Los Angeles County, California
Dear Mr. Rydman:
This Letter Report presents the results of special status botanical surveys for the Arroyo Seco
Canyon Project (hereinafter referred to as the “Proposed Project”) located in the City of
Pasadena in Los Angeles County, California (Exhibit 1).
PROJECT LOCATION AND DESCRIPTION
The Proposed Project is located within Arroyo Seco Canyon, which is part of the Los Angeles
Watershed (Hydrologic Unit Code 18070105). The botanical survey area for the Proposed
Project consists of four separate areas along the Arroyo Seco (Exhibit 1). These areas are located
on the U.S. Geological Survey’s (USGS’) Pasadena 7.5-minute quadrangle (Exhibit 2). Area 1 is
located along and to the west of the stream near the U.S. Forest Service Ranger Station; this area
contains the Arroyo Seco Headworks structure. Area 2 is referred to as the Arroyo Seco Intake
and is located approximately ¼ mile downstream from the Headworks. The Temporary Staging
Site is located approximately 900 feet downstream from the Arroyo Seco Intake area and
encompasses a small area immediately south of the confluence of Millard Canyon and the
Arroyo Seco stream. Area 3, the John L. Behner Treatment Plant study area, is located about
740 feet south of the Temporary Staging Site and includes the Jet Propulsion Laboratory (JPL)
parking lot and adjacent recharge basins.
The Proposed Project will increase the utilization of surface water rights held by the City of
Pasadena Water and Power Department (PWP) and the Lincoln Avenue Water Company
(LAWC) by restoring and improving intake facilities; modifying the existing sediment removal
mechanism; naturalizing the Arroyo Seco streambed; and expanding recharge operations by
creating additional spreading basins. In addition, the Proposed Project is planned to include a
new public restroom facility; recreational and educational amenities near the Headworks
structure; and a new, reduced size parking lot at the existing JPL parking site for those using the
Arroyo Seco Canyon and Hahamongna Watershed Park areas.
Mr. David Rydman
Page 2
January 20, 2014
METHODS
Botanical surveys were floristic in nature and consistent with the Protocols for Surveying and
Evaluating Impacts to Special Status Native Plant Populations and Natural Communities (CDFG
2009). Prior to field surveys, a literature review was conducted to identify special status plants
reported from the vicinity of the Project site. This included a review of the USGS’ Chilao Flat,
Condor Peak, Mt. Wilson, and Pasadena 7.5-minute quadrangles in the California Department of
Fish and Wildlife’s (CDFW’s) California Natural Diversity Database (CDFW 2013) and the
California Native Plant Society’s Electronic Inventory of Rare and Endangered Vascular Plants
of California (CNPS 2013).
Reference populations were monitored for annual and difficult-to-detect species with potential to
occur in the survey area to ensure that the surveys were comprehensive and conducted during the
species’ appropriate blooming period. Table 1 lists the reference populations visited and whether
the species was blooming and/or able to be identified to the taxonomic level necessary to
determine special status. For many annual and perennial herb species, rainfall received in the
winter and spring determines seed germination. According to the National Weather Service, the
region (data taken from La Cañada Flintridge, which is directly to the west of the survey area)
had received 10.11 inches of precipitation between October 1, 2012 and July 31, 2013. This is 46
percent of the mean normal 22.1 inches of precipitation and constitutes a drought year (NOAA
2013). In years of below average rainfall, monitoring of reference populations is important in
order to interpret survey results.
TABLE 1
REFERENCE POPULATION VISITS FOR SPECIAL STATUS PLANT SPECIES
Species Date Blooming Observed Location
Calochortus plummerae Plummer’s mariposa lily
May 15, 2013 Pasadena
Centromadia parryi ssp. australis southern tarplant*
May 14, 2013; August 12, 2013
Newport Beach; Irvine
Chorizanthe parryi var. fernandina San Fernando Valley spineflower
April 10, 2013 Las Virgenes Open Space
Symphyotrichum [Aster] greatae Greata’s aster
August 19, 2013 Angeles National Forest
* The species was not blooming on this date; however, it is identifiable in a vegetative state.
BonTerra Psomas Senior Botanist Kai Palenscar and Biologist Dani Henning conducted special
status botanical surveys on May 3 and June 13, 2013; BonTerra Psomas Senior Biologists
Allison Rudalevige and Jennifer Pareti conducted special status botanical surveys on August 19,
2013. All plant species observed were recorded in field notes and are reported in Attachment A.
Species were identified in the field or collected for later identification using taxonomic keys,
descriptions, and illustrations in Baldwin et al. (2012) and Munz (1974). Plant species were
identified to the taxonomic level necessary to determine whether or not they are a special status
species. Taxonomy follows Baldwin et al. (2012) and current scientific data (e.g., scientific
journals) for scientific and common names. Photographs of the survey area were taken during
surveys and are included in Attachment B.
Mr. David Rydman
Page 3
January 20, 2014
EXISTING CONDITIONS
The survey area occurs at the mouth of the canyon and where it opens up into an alluvial fan.
Elevations range from approximately 1,100 to 1,250 feet above mean sea level (msl). Soil types
in the survey area consist of the Hanford association (2 to 5 percent slopes), which occurs on
gently sloping alluvial fans, is well drained, and has moderately rapid subsoil permeability
(USDA 1969) and Mollic haploxeralfs (2 to 50 percent slopes), which occurs on alluvial fans and
is enriched with aluminum and iron (USDA NRCS 2013).
A public access road parallels the stream and is regularly used for hiking, dog-walking, mountain
biking, and other recreational activities. Area 1 consists of riparian forest dominated by a mix of
white alder (Alnus rhombifolia), western sycamore (Platanus racemosa), coast live oak (Quercus
agrifolia), and various willow species (Salix spp.). This area contained a relatively substantial
amount of water during the surveys, in spite of the low precipitation in 2013. Adjacent hillsides
support a mix of coastal sage scrub and chaparral plant species such as California sagebrush
(Artemisia californica) and laurel sumac (Malosma laurina). Area 2 and the Temporary Staging
Site are composed of similar riparian forest and coastal sage scrub species. Area 3 consists
primarily of developed or disturbed land, with remnant patches of coastal sage scrub along the
perimeter of the parking lot and in a strip through the lot. This vegetation consists of California
sagebrush, laurel sumac, Vasey’s prickly pear (Opuntia x vaseyi), and black sage (Salvia
mellifera).
SURVEY RESULTS
Table 2 identifies special status plant species reported from the vicinity of the survey area based
on the results of the literature review; their potential to occur within the survey area; and the
results of the special status botanical surveys.
TABLE 2
SPECIAL STATUS PLANT SPECIES REPORTED FROM
THE SURVEY AREA VICINITY
Species
Status Habitat Suitability; Results of Focused
Surveys USFWS CDFW CRPR
Arctostaphylos glandulosa ssp. gabrielensis San Gabriel manzanita
— — 1B.2 Outside known range; not expected to occur.
Astragalus brauntonii Braunton’s milkvetch
FE — 1B.1 Potentially suitable habitat; not observed during focused surveys.
Berberis nevinii Nevin’s barberry
FE SE 1B.1 Potentially suitable habitat; not observed during focused surveys.
California [Erodium] macrophylla round-leaved filaree
— — 1B.1 No suitable habitat; not expected to occur.
Calochortus palmeri var. palmeri Palmer’s mariposa lily
— — 1B.2 Outside known range; not expected to occur.
Calochortus plummerae Plummer’s mariposa lily
— — 4.2 Potentially suitable habitat; not observed during focused surveys.
Calochortus striatus alkali mariposa lily
— — 1B.2 No suitable habitat and outside known range; not expected to occur.
Mr. David Rydman
Page 4
January 20, 2014
TABLE 2
SPECIAL STATUS PLANT SPECIES REPORTED FROM
THE SURVEY AREA VICINITY
Species
Status Habitat Suitability; Results of Focused
Surveys USFWS CDFW CRPR
Castilleja gleasonii
Mt. Gleason paintbrush — SR 1B.2
No suitable habitat; not observed during focused surveys.
Centromadia parryi ssp. australis
southern tarplant — — 1B.1
Potentially suitable habitat; not observed during focused surveys.
Chorizanthe parryi var. fernandina
San Fernando Valley spineflower FC SE 1B.1
Limited potentially suitable habitat; not observed during focused surveys.
Chorizanthe parryi var. parryi Parry’s spineflower
— — 1B.1 Limited potentially suitable habitat; not observed during focused surveys.
Cladium californicum California sawgrass
— — 2B.2 No suitable habitat; not expected to occur.
Dodecahema leptoceras slender-horned spineflower
FE SE 1B.1 No suitable habitat; not expected to occur.
Galium grande San Gabriel bedstraw
— — 1A Outside known range; not expected to occur.
Helianthus nuttallii ssp. parishii Los Angeles sunflower
— — 1A Potentially suitable habitat, but species presumed extinct; not observed during focused surveys.
Horkelia cuneata var. puberula mesa horkelia
— — 1B.1 Potentially suitable habitat; not observed during focused surveys.
Imperata brevifolia California satintail
— — 2B.1 Potentially suitable habitat; not observed during focused surveys.
Lasthenia glabrata ssp. coulteri Coulter’s goldfields
— — 1B.1 No suitable habitat; not expected to occur.
Lepidium virginicum var. robinsonii
Robinson’s pepper-grass* — — 4.3
Potentially suitable habitat; not observed during focused surveys.
Linanthus concinnus
San Gabriel linanthus — — 1B.2
No suitable habitat and outside known range; not expected to occur.
Linanthus orcuttii
Orcutt’s linanthus — — 1B.3
No suitable habitat and outside known range; not expected to occur.
Lupinus peirsonii
Peirson’s lupine — — 1B.3
Outside known range; not expected to occur.
Malacothamnus davidsonii Davidson’s bush-mallow
— — 1B.2 Suitable habitat; not observed during focused surveys.
Muhlenbergia californica California muhly
— — 4.3 Suitable habitat; not observed during focused surveys.
Opuntia basilaris var. brachyclada short-joint beavertail
— — 1B.2 Outside known range; not expected to occur.
Orobanche valida ssp. valida Rock Creek broomrape
— — 1B.2 No suitable habitat and outside known range; not expected to occur.
Pseudognaphalium leucocephalum
white rabbit-tobacco — — 2B.2
Potentially suitable habitat; not observed during focused surveys.
Ribes divaricatum var. parishii
Parish’s gooseberry — — 1A
Potentially suitable habitat, but species presumed extinct; not observed during focused surveys.
Mr. David Rydman
Page 5
January 20, 2014
TABLE 2
SPECIAL STATUS PLANT SPECIES REPORTED FROM
THE SURVEY AREA VICINITY
Species
Status Habitat Suitability; Results of Focused
Surveys USFWS CDFW CRPR
Symphyotrichum [Aster] greatae
Greata’s aster — — 1B.3
Potentially suitable habitat; not observed during focused surveys.
Thelypteris puberula var. sonorensis Sonoran maiden fern
— — 2B.2 Potentially suitable habitat; not observed during focused surveys.
USFWS: U.S. Fish and Wildlife Service; CDFW: California Department of Fish and Wildlife; CRPR: California Rare Plant Rank; CNDDB: California Natural Diversity Database
Status: Federal (USFWS) State (CDFW) FE Endangered SE Endangered FC Candidate SR Rare CRPR 1A Plants Presumed Extirpated from California and are Either Rare or Extinct Elsewhere 1B Plants Rare, Threatened, or Endangered Throughout Their Range 2B Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere 4 Plants of Limited Distribution – A Watch List CRPR Threat Code Extensions .1 Seriously Threatened in California (over 80% of occurrences threatened; high degree and immediacy of threat) .2 Fairly Threatened in California (20–80% of occurrences threatened; moderate degree and immediacy of threat) .3 Not Very Threatened in California (<20% of occurrences threatened; low degree and immediacy of threat or no current
threats known)
* Robinson’s pepper-grass is not recognized in Baldwin et al. (2012); however, it is still tracked by the CNDDB.
Note: A dash (“—“) indicates that this is not applicable for the species.
One special status plant species, Southern California black walnut (Juglans californica), was
observed. Details of this observed species are discussed below.
Southern California Black Walnut
Southern California black walnut has a CRPR of 4.2. This deciduous tree occurs on hillsides and
in canyons at elevations between 98 and 2,953 feet above msl (Baldwin et al. 2012). It is known
from southwestern California, except the Channel Islands and the San Bernardino Mountains,
and in cultivation in the Santa Lucia Range (Baldwin et al. 2012).
Two southern California black walnut trees were observed in the survey area (Exhibit 3;
Attachment B). One was observed on an east-facing slope in a coastal sage scrub – chaparral
ecotone with laurel sumac, California brickellbush (Brickellia californica), California sagebrush,
and holly-leaved cherry (Prunus ilicifolia). The other was observed on a steep, west-facing slope
in coastal sage scrub adjacent to the JPL parking lot; associated species include California
sagebrush, laurel sumac, and mission prickly-pear (Opuntia ficus-indica).
Mr. David Rydman Page 6 January 20, 2014 CONCLUSION
Individual Southern California black walnut trees should be avoided to the extent feasible. However, Proposed Project impacts on Southern California black walnut individuals would be considered adverse, but less than significant because the loss of relatively few (i.e., two) trees would not substantially affect the regional population of this species. No measures to specifically protect these trees would be required.
Although reference populations and regional rainfall amounts were monitored to ensure the scientific adequacy of these focused surveys, there is always a potential for a false negative survey result as species could possibly be present on a site but may not be detectable at the time of the surveys. Based on the reference population monitoring, many target plant species were observable at the time the Project surveys were conducted. Since most of the area surveyed consists of riparian forest with adequate stream flow, it is unlikely that sensitive riparian plant species were present in the survey area and undetected due to drought conditions.
Please call Marc Blain at (626) 351-2000 with any questions related to this report.
Sincerely, BonTerra Psomas Marc T. Blain Allison D. Rudalevige Senior Project Manager Senior Biologist Enclosures: Exhibits 1–3 Attachment A – Plant Compendium Attachment B – Site Photographs R:\Projects\Carollo\J041\Plant_SurveyRpt-020414.doc
REFERENCES
Baldwin, B.G., D.J. Keil, R. Patterson, T.J. Rosatti, and D.H. Wilken (Eds.). 2012. The Jepson Manual: Vascular Plants of California (Second ed.). Berkeley, CA: University of California Press.
California Department of Fish and Wildlife (CDFW). 2013 (May 3). California Natural Diversity Database. Records of Occurrence for the USGS Chilao Flat, Condor Peak, Mt. Wilson, and Pasadena 7.5-minute quadrangle maps. Sacramento, CA: CDFW, Natural Heritage Division.
Mr. David Rydman
Page 7
January 20, 2014
California Department of Fish and Game (CDFG).1 2009 (November 24). Protocols for
Surveying and Evaluating Impacts to Special Status Native Plant Populations and
Natural Communities. Sacramento, CA: CDFG.
California Native Plant Society (CNPS). 20013. Electronic Inventory of Rare and Endangered
Vascular Plants of California (v7-09d). Records of Occurrence for the USGS Chilao Flat,
Condor Peak, Mt. Wilson, and Pasadena 7.5-minute quadrangle maps. Sacramento, CA:
CNPS. http://www.cnps.org/inventory.
Munz, P.A. 1974. A Flora of Southern California. Berkeley, CA: University of California Press.
National Oceanic and Atmospheric Administration (NOAA). 2013. Daily Climate Report. Silver
Spring, MD: National Weather Service. http://www. nws.noaa.gov/climate.
U.S. Department of Agriculture (USDA). 1969 (revised). Report and General Soil Map, Los
Angeles County, California. Lancaster, CA: USDA, Natural Resources Conservation
Service.
United States Department of Agriculture, Natural Resources Conservation Service (USDA
NRCS). 2013 (last updated). Web Soil Survey (search for Soil Survey Area, Los Angeles
County, California: Angeles National Forest Area, California). Davis, CA: USDA NRCS.
1 Although the California Department of Fish and Game (CDFG) changed its name to the California Department of
Fish and Wildlife (CDFW) effective January 1, 2013, “CDFG” is still used throughout this document for all documents published or database searches completed before January 1, 2013.
Arroyo Seco Canyon Project
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USGS 7.5-minute Quadrangle Exhibit 2
(Rev: 12-17-2013 MMD) R:\Projects\Carollo\J041\Graphics\Plant\ex2_USGS.pdf
Special Status Plant Species LocationsArroyo Seco Canyon Project
Exhibit 3
(Rev: 2-04-2014 MMD) R:\Projects\Carollo\J041\Graphics\Plants\ex3_SS_locs.pdf
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ATTACHMENT A
PLANT COMPENDIUM
Arroyo Seco Canyon Project
R:\Projects\Carollo\J041\Plant_SurveyRpt-020414.doc A-1 Plant Compendium
PLANTS OBSERVED IN THE SURVEY AREA
DURING 2013 SPECIAL STATUS BOTANICAL SURVEYS
Species
PTERIDOPHYTES - FERNS AND ALLIES
DRYOPTERIDACEAE - WOOD FERN FAMILY
Dryopteris arguta coastal wood fern
POLYPODIACEAE - POLYPODY FAMILY
Polypodium californicum California polypody
PTERIDACEAE - BRAKE FAMILY
Pellaea andromedifolia coffee fern
Pentagramma triangularis ssp. triangularis goldenback fern
SELAGINELLACEAE - SPIKE-MOSS FAMILY
Selaginella bigelovii Bigelow's or bushy spike-moss
ANGIOSPERMAE - FLOWERING PLANTS
MAGNOLIIDS
LAURACEAE - LAUREL FAMILY
Umbellularia californica California bay
EUDICOTS
ADOXACEAE - MUSKROOT FAMILY
Sambucus nigra ssp. caerulea [S. mexicana] blue elderberry
AMARANTHACEAE - AMARANTH FAMILY
Amaranthus albus* tumbleweed
ANACARDIACEAE - SUMAC FAMILY
Malosma laurina laurel sumac
Rhus aromatica [R. trilobata] skunk bush
Rhus ovata sugar bush
Toxicodendron diversilobum western poison oak
APOCYNACEAE - DOGBANE FAMILY
Nerium oleander* common oleander
Vinca major* greater periwinkle
ASTERACEAE - SUNFLOWER FAMILY
Acourtia microcephala sacapellote
Ageratina adenophora* crofton weed
Ambrosia acanthicarpa annual bur-sage
Ambrosia psilostachya western ragweed
Anthemis cotula* mayweed
Artemisia californica California sagebrush
Artemisia douglasiana mugwort
Artemisia dracunculus tarragon
Baccharis pilularis ssp. consanguinea [B. pilularis] coyote brush
Baccharis salicifolia ssp. salicifolia [B. salicifolia] mule fat
Bidens pilosa* common beggar-ticks
Brickellia californica California brickellbush
Carduus pycnocephalus ssp. pycnocephalus* Italian thistle
Centaurea melitensis* tocalote, Malta star-thistle
Chaenactis glabriuscula yellow pincushion
Cirsium occidentale western thistle
Arroyo Seco Canyon Project
R:\Projects\Carollo\J041\Plant_SurveyRpt-020414.doc A-2 Plant Compendium
PLANTS OBSERVED IN THE SURVEY AREA
DURING 2013 SPECIAL STATUS BOTANICAL SURVEYS
Species
Cirsium vulgare* bull thistle
Corethrogyne filaginifolia [Lessingia f.] California-aster
Delairea odorata [Senecio mikanioides]* cape ivy, German ivy
Eriophyllum confertiflorum golden-yarrow
Euthamia occidentalis western goldenrod
Heterotheca grandiflora telegraph weed
Heterotheca sessiliflora sessileflower goldenaster
Hypochaeris glabra* smooth cat's-ear
Lactuca serriola* prickly lettuce
Lepidospartum squamatum scale-broom
Malacothrix saxatilis var. saxatilis cliff malacothrix
Pseudognaphalium californicum [Gnaphalium c.] California everlasting
Pseudognaphalium canescens [Gnaphalium c.] everlasting
Pseudognaphalium luteoalbum [Gnaphalium l.]* weedy cudweed
Sonchus oleraceus* common sow thistle
Stephanomeria exigua wreath plant
Xanthium strumarium cocklebur
BETULACEAE - BIRCH FAMILY
Alnus rhombifolia white alder
BORAGINACEAE - BORAGE FAMILY
Cryptantha sp. cryptantha
Eriodictyon crassifolium thick-leaf yerba santa
Eucrypta chrysanthemifolia common eucrypta
Phacelia cicutaria caterpillar phacelia
Phacelia minor wild canterbury-bell
Phacelia ramosissima branching phacelia
Plagiobothrys sp. popcorn flower
BRASSICACEAE - MUSTARD FAMILY
Brassica nigra* black mustard
Hirschfeldia incana* shortpod mustard
Lepidium nitidum peppergrass / shining peppergrass
Lepidium virginicum var. menziesii [L.v. var. pubescens] wild peppergrass
Nasturtium officinale [Rorippa nasturtium-aquaticum]* water cress
Raphanus sativus* radish
Sisymbrium irio* London rocket
Sisymbrium orientale* hare's ear cabbage
CACTACEAE - CACTUS FAMILY
Cylindropuntia prolifera [Opuntia p.] coastal cholla
Opuntia ficus-indica* mission prickly-pear
Opuntia littoralis coastal prickly-pear
Opuntia x vaseyi mesa prickly-pear
CAMPANULACEAE - BELLFLOWER FAMILY
Lobelia dunnii var. serrata rothrock lobelia
Arroyo Seco Canyon Project
R:\Projects\Carollo\J041\Plant_SurveyRpt-020414.doc A-3 Plant Compendium
PLANTS OBSERVED IN THE SURVEY AREA
DURING 2013 SPECIAL STATUS BOTANICAL SURVEYS
Species
CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
Lonicera subspicata var. denudata southern honeysuckle
CARYOPHYLLACEAE - PINK FAMILY
Polycarpon tetraphyllum ssp. tetraphyllum* four-leaved allseed
Silene gallica* small-flower catchfly
Spergularia villosa* hairy sand-spurrey
CHENOPODIACEAE - GOOSEFOOT FAMILY
Chenopodium album* lamb's quarters
Dysphania ambrosioides [Chenopodium a.]* Mexican tea
Dysphania botrys [Chenopodium b.]* Jerusalum oak
CONVOLVULACEAE - MORNING-GLORY FAMILY
Calystegia macrostegia large-bracted morning-glory
Cuscuta subinclusa canyon dodder
CRASSULACEAE - STONECROP FAMILY
Crassula connata pygmy-weed
Dudleya lanceolata lance-leaved dudleya / lanceleaf/ coastal dudleya / coastal live-forever
CUCURBITACEAE - GOURD FAMILY
Marah macrocarpus wild cucumber / chilicothe
EUPHORBIACEAE - SPURGE FAMILY
Chamaesyce albomarginata [Euphorbia a.] rattlesnake weed
Croton californicus California croton
Euphorbia lathyris* caper spurge / gopher spurge
Euphorbia peplus* petty spurge
Ricinus communis* castor bean
FABACEAE - LEGUME FAMILY
Acacia sp.* acacia
Acmispon americanus [Lotus purshianus] American lotus
Acmispon glaber var. glaber [Lotus scoparius var. scoparius] coastal deerweed
Acmispon heermannii var. heermannii [Lotus h. var. h.] southern woolly lotus
Lupinus excubitus grape soda lupine
Lupinus bicolor miniature lupine
Melilotus indica* sourclover
Spartium junceum* Spanish broom
FAGACEAE - OAK / BEECH FAMILY
Quercus agrifolia coast live oak
Quercus sp. oak
Erodium botrys* long-beaked filaree
Erodium cicutarium* red-stemmed filaree
GROSSULARIACEAE - GOOSEBERRY FAMILY
Ribes aureum golden currant
JUGLANDACEAE - WALNUT FAMILY
Juglans californica Southern California black walnut
Arroyo Seco Canyon Project
R:\Projects\Carollo\J041\Plant_SurveyRpt-020414.doc A-4 Plant Compendium
PLANTS OBSERVED IN THE SURVEY AREA
DURING 2013 SPECIAL STATUS BOTANICAL SURVEYS
Species
LAMIACEAE - MINT FAMILY
Marrubium vulgare* common horehound
Mentha spicata* spearmint
Salvia apiana white sage
Salvia columbariae chia
Salvia mellifera black sage
Stachys albens white hedge-nettle
MONTIACEAE - MONTIA FAMILY
Claytonia perfoliata ssp. perfoliata common miner's-lettuce
MORACEAE - FIG FAMILY
Ficus carica* edible fig
MYRSINACEAE - MYRSINE FAMILY
Anagallis arvensis* scarlet pimpernel
MYRTACEAE - MYRTLE FAMILY
Eucalyptus camaldulensis* river red gum
OLEACEAE - OLIVE FAMILY
Fraxinus sp. ash
ONAGRACEAE - EVENING-PRIMROSE FAMILY
Epilobium canum California fuchsia
Epilobium ciliatum willow-herb
Oenothera elata ssp. hirsutissima great marsh evening primrose
OROBANCHACEAE - BROOMRAPE FAMILY
Castilleja minor ssp. spiralis California threadtorch
PAPAVERACEAE - POPPY FAMILY
Eschscholzia californica California poppy
PHRYMACEAE - LOPSEED FAMILY
Mimulus aurantiacus bush monkeyflower
Mimulus cardinalis scarlet monkeyflower
Mimulus floribundus showy monkeyflower
Mimulus guttatus seep monkeyflower
PLANTAGINACEAE - PLANTAIN FAMILY
Keckiella cordifolia heart-leaved bush-penstemon
Plantago arenaria [P. indica]* sand plantain
Plantago lanceolata* English plantain
Plantago major* common plantain
Veronica anagallis-aquatica* water speedwell
PLATANACEAE - SYCAMORE FAMILY
Platanus racemosa western sycamore
POLEMONIACEAE - PHLOX FAMILY
Linanthus californicum [Leptodactylon c.] prickly phlox
Eriogonum elongatum var. elongatum long-stemmed wild buckwheat
Eriogonum fasciculatum California buckwheat
Persicaria lapathifolia [Polygonum lapathifolium] willow weed
Polygonum aviculare ssp. depressum [Polygonum common knotweed
Arroyo Seco Canyon Project
R:\Projects\Carollo\J041\Plant_SurveyRpt-020414.doc A-5 Plant Compendium
PLANTS OBSERVED IN THE SURVEY AREA
DURING 2013 SPECIAL STATUS BOTANICAL SURVEYS
Species
arenastrum]*
Rumex crispus* curly dock
Rumex salicifolius willow dock
PORTULACACEAE - PURSLANE FAMILY
Portulaca oleracea* common purslane
RHAMNACEAE - BUCKTHORN FAMILY
Ceanothus crassifolius hoaryleaf ceanothus
Ceanothus leucodermis chaparral whitethorn
Ceanothus spinosus greenbark ceanothus
Frangula californica [Rhamnus californica] California coffee berry
Rhamnus crocea spiny redberry
Rhamnus ilicifolia hollyleaf redberry
ROSACEAE - ROSE FAMILY
Adenostoma fasciculatum var. fasciculatum common chamise
Cercocarpus betuloides var. betuloides birch-leaf mountain-mahogany
Heteromeles arbutifolia toyon / Christmas berry
Prunus ilicifolia holly-leaved cherry
Rosa californica California rose
Rubus armeniacus* Himalayan blackberry
Rubus ursinus California blackberry
RUBIACEAE - MADDER FAMILY
Galium angustifolium narrowly leaved bedstraw
SALICACEAE - WILLOW FAMILY
Populus fremontii ssp. fremontii Fremont cottonwood
Salix gooddingii Goodding's black willow
Salix laevigata red willow
Salix lasiolepis arroyo willow
SAPINDACEAE - SOAP BERRY FAMILY
Acer macrophyllum big-leaf maple
SCROPHULARIACEAE - FIGWORT FAMILY
Verbascum thapsus* woolly mullein
Verbascum virgatum* wand mullein
SIMAROUBACEAE - QUASSIA FAMILY
Ailanthus altissima* tree of heaven
SOLANACEAE - NIGHTSHADE FAMILY
Datura wrightii jimson weed
Nicotiana glauca* tree tobacco
Solanum douglasii Douglas' nightshade
TAMARICACEAE - TAMARISK FAMILY
Tamarix ramosissima* saltcedar
URTICACEAE - NETTLE FAMILY
Urtica dioica ssp. holosericea hoary nettle
Arroyo Seco Canyon Project
R:\Projects\Carollo\J041\Plant_SurveyRpt-020414.doc A-6 Plant Compendium
PLANTS OBSERVED IN THE SURVEY AREA
DURING 2013 SPECIAL STATUS BOTANICAL SURVEYS
Species
MONOCOTYLEDONES - MONOCOTS
AGAVACEAE - CENTURY PLANT FAMILY
Agave americana* century plant
Hesperoyucca whipplei [Yucca w.] chaparral yucca
ARACEAE - ARUM FAMILY
Lemna sp. duckweed
CYPERACEAE - SEDGE FAMILY
Cyperus eragrostis tall umbrella-sedge
JUNCACEAE - RUSH FAMILY
Juncus macrophyllus long-leaved rush
Juncus oxymeris pointed rush
Juncus xiphioides iris-leaved rush
POACEAE - GRASS FAMILY
Arundo donax* giant reed
Avena fatua* wild oat
Bromus catharticus* rescue grass
Bromus diandrus* ripgut grass
Bromus hordeaceus* soft chess
Bromus madritensis ssp. rubens* red brome
Cynodon dactylon* bermuda grass
Echinochloa crus-galli* barnyard grass
Festuca myuros [Vulpia m.]* foxtail fescue
Hordeum murinum ssp. glaucum* smooth barley
Lamarckia aurea* goldentop
Melica imperfecta little California melic grass
Phalaris minor* little-seed canary grass
Polypogon monspeliensis* annual beard grass
Stipa miliacea [Piptatherum miliacea]* smilo grass
TYPHACEAE - CATTAIL FAMILY
Typha latifolia broad-leaved cattail
* non-native to the region it was found
ATTACHMENT B
SITE PHOTOGRAPHS
Special Status Plant Species Photographs Attachment BArroyo Seco Canyon Project
(12/17/13 MMD) R:\Projects\Carollo\J041\Graphics\Plant\Att_SP1.pdf
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Southern California black walnut in coastal sage scrub - chaparral ecotone. The walnut is the tall, pale green tree in background.
Southern California black walnut on a slope adjacent to the JPL parking lot.