Western Riverside County Multiple Species Habitat Conservation Plan (MSHCP) Biological Monitoring Program Rare Plant Survey Report 2008 15 April 2009 TABLE OF CONTENTS INTRODUCTION ............................................................................................................................1 SURVEY GOALS: ...........................................................................................................................1 METHODS .......................................................................................................................................2 PROTOCOL DEVELOPMENT............................................................................................................2 PERSONNEL AND TRAINING...........................................................................................................2 SURVEY SITE SELECTION ..............................................................................................................3 SURVEY METHODS........................................................................................................................7 DATA ANALYSIS ...........................................................................................................................9 RESULTS .......................................................................................................................................11 ALLIUM MARVINII, YUCAIPA ONION..............................................................................................13 ALLIUM MUNZII, MUNZ’S ONION ..................................................................................................13 ARCTOSTAPHYLOS RAINBOWENSIS, RAINBOW MANZANITA........................................................23 ASTRAGALUS PACHYPUS VAR. JAEGERI, JAEGER’S MILK-VETCH....................................................23 ATRIPLEX CORONATA VAR. NOTATIOR, SAN JACINTO VALLEY CROWNSCALE................................24 ATRIPLEX SERENANA VAR. DAVIDSONII, DAVIDSON’S SALTSCALE .............................................24 BRODIAEA ORCUTTII, ORCUTT’S BRODIAEA .................................................................................24 BRODIAEA FILIFOLIA, THREAD-LEAVED BRODIAEA ......................................................................25 CALOCHORTUS PALMERI VAR. MUNZII, MUNZ’S MARIPOSA LILY ..................................................25 CALOCHORTUS PLUMMERAE, PLUMMER’S MARIPOSA LILY...........................................................25 CALOCHORTUS WEEDII VAR. INTERMEDIUS, INTERMEDIATE MARIPOSA LILY ................................26 CAULANTHUS SIMULANS, PAYSON’S JEWELFLOWER .....................................................................26 CEANOTHUS OPHIOCHILUS, VAIL LAKE CEANOTHUS ...................................................................26 CENTROMADIA PUNGENS SSP. LAEVIS, SMOOTH TARPLANT ...........................................................26 CHORIZANTHE LEPTOTHECA, PENINSULAR SPINE FLOWER ............................................................27 CHORIZANTHE PARRYI VAR. PARRYI, PARRY’S SPINE FLOWER .......................................................27 CHORIZANTHE POLYGONOIDES VAR. LONGISPINA, LONG-SPINED SPINE FLOWER ........................28 CHORIZANTHE PROCUMBENS, PROSTRATE SPINE FLOWER.............................................................28 CONVOLVULUS SIMULANS, SMALL-FLOWERED MORNING-GLORY..................................................29 DEINANDRA MOHAVENSIS, MOJAVE TARPLANT ............................................................................29 DODECAHEMA LEPTOCERAS, SLENDER-HORNED SPINE FLOWER ...................................................29 DUDLEYA MULTICAULIS, MANY-STEMMED DUDLEYA ...................................................................29 ERYNGIUM ARISTULATUM VAR. PARISHII, SAN DIEGO BUTTON-CELERY ........................................30 ERODIUM MACROPHYLLUM, ROUND-LEAVED FILAREE..................................................................30 GALIUM ANGUSTIFOLIUM SSP. JACINTICUM, SAN JACINTO MOUNTAINS BEDSTRAW .....................30 HARPAGONELLA PALMERI, PALMER’S GRAPPLINGHOOK...............................................................31 HEUCHERA HIRSUTISSIMA, SHAGGY-HAIRED ALUMROOT..............................................................31 HOLOCARPHA VIRGATA SSP. ELONGATA, GRACEFUL TARPLANT.....................................................32 HULSEA VESTITA SSP. CALLICARPHA, BEAUTIFUL HULSEA .............................................................32 JUGLANS CALIFORNICA VAR. CALIFORNICA, CALIFORNIA BLACK WALNUT....................................33 ii LASTHENIA GLABRATA SSP. COULTERI, COULTER’S GOLDFIELDS ...................................................33 LEPECHINIA CARDIOPHYLLA, HEART-LEAVED PITCHER SAGE........................................................34 LILIUM HUMBOLDTII SSP. OCELLATUM, OCELLATED HUMBOLDT LILY ..........................................34 LILIUM PARRYI, LEMON LILY ........................................................................................................34 LIMNANTHES GRACILIS VAR. PARISHII, PARISH’S MEADOWFOAM ..................................................34 MICROSERIS DOUGLASII SSP. PLATYCARPHA, SMALL-FLOWERED MICROSERIS ...............................34 MIMULUS CLEVELANDII, CLEVELAND’S BUSH MONKEYFLOWER ..................................................35 MIMULUS DIFFUSUS, PALOMAR MONKEYFLOWER .......................................................................35 MONARDELLA MACRANTHA SSP. HALLII, HALL’S MONARDELLA ....................................................36 MUHLENBERGIA CALIFORNICA, CALIFORNIA MUHLY....................................................................36 MYOSURUS MINIMUS SSP. APUS, LITTLE MOUSETAIL .....................................................................36 NAMA STENOCARPUM, MUD NAMA ...............................................................................................36 NAVARRETIA FOSSALIS, SPREADING NAVARRETIA .........................................................................37 NAVARRETIA PROSTRATA, PROSTRATE NAVARRETIA .....................................................................37 ORCUTTIA CALIFORNICA, CALIFORNIA ORCUTT GRASS ................................................................37 OXYTHECA CARYOPHYLLOIDES, CHICKWEED OXYTHECA ..............................................................37 PENSTEMON CALIFORNICUS, CALIFORNIA BEARDTONGUE............................................................38 PHACELIA STELLARIS, BRAND’S PHACELIA ...................................................................................38 POLYGALA CORNUTA VAR. FISHIAE, MILK’S FISHWORT ................................................................39 POTENTILLA RIMICOLA, CLIFF CINQUEFOIL...................................................................................39 QUERCUS ENGELMANNII, ENGELMANN OAK.................................................................................39 ROMNEYA COULTERI, COULTER’S MATILIJA POPPY ......................................................................40 SATUREJA CHANDLERI, SAN MIGUEL SAVORY ..............................................................................40 SIBAROPSIS HAMMITTII, HAMMITT’S CLAY-CRESS ........................................................................40 TRICHOCORONIS WRIGHTII VAR. WRIGHTII, WRIGHT’S TRICHOCORONIS .......................................40 DISCUSSION.................................................................................................................................41 RECOMMENDATIONS FOR FUTURE SURVEYS...............................................................................41 LITERATURE CITED ...................................................................................................................43 iii LIST OF TABLES AND FIGURES Table 1. List of Species Surveyed for or Found Incidentally in 2008. .............................................4 Figure 1. Sites surveyed in 2008 for rare plant species....................................................................8 Table 2. Sentinel Site Results for 2008. .........................................................................................12 Figure 2a. Covered plant species detected during rare plant surveys in 2008................................14 Figure 2b. Covered plant species detected during rare plant surveys in 2008. ..............................15 Figure 2c. Covered plant species detected during rare plant surveys in 2008................................16 Figure 2d. Covered plant species detected during rare plant surveys in 2008. ..............................17 Figure 2e. Covered plant species detected during rare plant surveys in 2008................................18 Figure 2f. Covered plant species detected during rare plant surveys in 2008. ...............................19 Table 3. Results from 2008 surveys and cumulative results towards meeting species objectives. Species highlighted in grey have had at least 75% of their distributional goals met. .......20 Table 4. Results from 2008 Surveys and Cumulative Results Towards Meeting Demonstrate Conservation Objective.....................................................................................................22 LIST OF APPENDICES Appendix A: Western Riverside County MSHCP Biological Monitoring Program Protocol for Inventory-Phase Rare Plant Surveys, March 18, 2008 .....................................................45 Appendix