Plant Guide to Iron Mountain Trail, Poway This is a working list, about which we make no guarantees at all until we officially release it. Use at your own risk!
Introduction and Explanation of Plant Trail Guides
Introduction
Highlights of This Trail
Fieldwork Dates and Summary of List Changes With Time
The Plant Guide
Comments On Specific Species
Introduction This guide begins at the Highway 67 trailhead, immediately south of Poway Road (not the Ellie Lane Trailhead to the north). Using this route, this hike is 6.2 miles roundtrip with ~1100 feet of elevation gain and loss. See Schad, 1998, pp. 79-81 for a map and description of this trail.
This guide was made from a single field trip, and has not yet been field-verified. Most mileages have not yet been added, but there are enough mileages and landmarks so that most people should be able to follow the guide.
See also Plants of Iron Mountain. This guide has an additional 27 species not found in that flora.
Highlights of This Trail Number of Unique Taxa On This Trail
The following histogram gives the number of trails in our database that contain each taxon on this trail. We had 102 trails in my database when this histogram was made; 3 of those trails, including this one, are at the Blue Sky Ecological Reserve, Lake Poway and Iron Mountain Area. A number of "1" means the taxon has only been found on this trail among the trails in my database; numbers of "3" or smaller may indicate taxa found only in this area.
Number of Trails
Containing A TaxonNumber Of Taxa
On This Trail% of Taxa
On This TrailTotal Taxa 100% We found xx additional species not in the above table, since they have not been identified yet. The unidentified ones are marked with ? or sp in the id? column in the guide, and have no entries in the #all column.
Fieldwork Dates and Summary of List Changes With Time The following table gives the dates the trail was walked and taxa recorded. After each visit, the table gives the total number of taxa on the list and the breakdown of the taxa without positive identification. See Explanation of Plant Trail Guides to understand the symbols below.
Visit Date Visit # # taxa # "?" # "sp" # "~" # "ssp"
The Plant Guide Version for printing, without lines and other text on this page: html (8 pages) or pdf Clickbook booklet (2 double-sided page). (See printing instructions for an explanation of these options)
Mile S # id? Common Name Latin Name #here #all 0.00 Begin trail at SR67 entrance just south of Poway Road 0.00 b 1 *shortpod mustard Hirschfeldia incana 99 / 9 0.00 b 2 *foxtail barley Hordeum murinum 5 / 1 0.00 b 3 dove weed Eremocarpus setigerus 30 / 5 0.00 r 4 western ragweed Ambrosia psilostachya 5 / 1 0.00 b 5 *long-beaked filaree Erodium botrys 99 / 9 0.00 r 6 *smooth cat's ear Hypochaeris glabra 99 / 9 0.00 r 7 *prickly sow thistle Sonchus asper ssp. asper 10 / 9 0.00 r 8 *sow thistle Sonchus oleraceus 10 / 9 0.00 r 9 *Italian thistle Carduus pycnocephalus 1 / 1 0.00 r 10 ~ horseweed Conyza canadensis 1 / 1 0.00 b 11 *Russian thistle Salsola tragus 5 / 2 0.00 r 12 *annual blue grass Poa annua 2 / 1 0.00 b 13 *soft chess Bromus hordeaceus 20 / 5 0.00 b 14 *red brome Bromus madritensis ssp. rubens 50 / 9 0.00 r 15 sp annual everlasting Gnaphalium sp. 5 / 1 0.00 r 16 *scarlet pimpernel Anagallis arvensis 10 / 5 0.00 b 17 California sagebrush Artemisia californica 10 / 5 0.00 b (California buckwheat, Eriogonum fasciculatum var. foliolosum) 0.00 b 18 San Diego birdsfoot lotus Lotus hamatus 5 / 2 0.00 b (curly dock, Rumex crispus; Spanish clover, Lotus purshianus var. purshianus) 0.00 r 19 ~ *wall bedstraw Galium parisiense 10 / 1 0.00 b 20 *tocalote Centaurea melitensis 99 / 9 0.00 b 21 *redstem filaree Erodium cicutarium 99 / 9 0.00 r 22 *California burclover Medicago polymorpha 50 / 9 0.00 r 23 *horehound Marrubium vulgare 10 / 5 0.00 r 24 *ripgut brome Bromus diandrus 20 / 5 0.00 l 25 *Crete weed Hedypnois cretica 50 / 9 0.00 l 26 *cheeseweed Malva parviflora 3 / 1 0.00 l 27 *white-stemmed filaree Erodium moschatum 20 / 5 0.00 l 28 *sourclover Melilotus indicus 10 / 3 0.00 Cross over culvert 0.00 l 29 *London rocket Sisymbrium irio 50 / 9 0.00 l 30 ssp big sagebrush Artemisia tridentata 2 / 1 0.00 l (laurel sumac, Malosma laurina; chaparral bush mallow, Malacothamnus fasciculatus) 0.01 r Kiosk 0.01 b 31 coast live oak Quercus agrifolia var. agrifolia 20 / 1 0.01 b 32 ~ *nettle-leaved goosefoot Chenopodium murale 10 / 2 0.02 l 33 narrow-leaf milkweed Asclepias fascicularis 1 / 1 0.02 l (planted pine, Pinus sp.; eucalyptus, Eucalyptus sp.; purple wild radish, Raphanus sativus) 0.02 r 34 sacred datura Datura wrightii 1 / 1 0.03 l 35 rattlesnake weed Chamaesyce albomarginata 1 / 1 r 36 planted pine Pinus sp. / l 37 *purple wild radish Raphanus sativus 5 / 2 l 38 *prickly lettuce Lactuca serriola 1 / 1 l 39 laurel sumac Malosma laurina 10 / 3 l 40 *winter vetch Vicia villosa ssp. varia 10 / 2 l 41 California-aster Lessingia filaginifolia var. filaginifolia 5 / 2 l 42 saw-toothed goldenbush Hazardia squarrosa var. grindelioides 30 / 9 r 43 California buckwheat Eriogonum fasciculatum var. foliolosum 10 / 3 l 44 deerweed Lotus scoparius var. scoparius 30 / 5 r 45 broom baccharis Baccharis sarothroides 10 / 3 0.10 r 46 white sage Salvia apiana 10 / 3 r 47 bicolored everlasting Gnaphalium bicolor 3 / 3 l 48 golden yarrow Eriophyllum confertiflorum var. confertiflorum 30 / 9 l 49 ~ chaparral bush mallow Malacothamnus fasciculatus 10 / 5 r (California four o'clock, Mirabilis californica) l (fragrant everlasting, Gnaphalium canescens ssp. beneolens) l 50 ~ holly-leaf navarretia Navarretia atractyloides 1 / 1 l 51 small-seeded spurge Chamaesyce polycarpa 1 / 1 r 52 popcorn flower Cryptantha intermedia 20 / 3 r 53 red maids Calandrinia ciliata 10 / 3 b Sign: "Remain on trail" l 54 slender tarweed Hemizonia fasciculata 10 / 1 r Road rejoins trail l 55 wild-cucumber Marah macrocarpus var. macrocarpus 2 / 2 r 56 *mouse-ear chickweed Cerastium glomeratum 5 / 1 r 57 *windmill pink Silene gallica 30 / 5 b 58 common fiddleneck Amsinckia menziesii var. intermedia 5 / 1 0.25 l 59 slender sunflower Helianthus gracilentus 30 / 9 r (coastal goldenbush, Isocoma menziesii) r 60 *lesser swine cress Coronopus didymus 5 / 1 r 61 bush monkeyflower Mimulus aurantiacus 30 / 9 r (Ramona-lilac, Ceanothus tomentosus var. olivaceus) r 62 small-flowered soap plant Chlorogalum parviflorum 30 / 9 r 63 sp filago Filago sp. 30 / 9 r 64 sp tiny annual clover Trifolium microcephalum? 1 / 1 r 65 ssp western thistle Cirsium occidentale 1 / 1 l Jct. trail and signpost to Ellie Lane trailhead l 66 coastal goldenbush Isocoma menziesii 2 / 2 l Two porta-potties l 67 stinging lupine Lupinus hirsutissimus 1 / 1 l (dwarf nettle, Urtica urens) l 68 Ramona-lilac Ceanothus tomentosus var. olivaceus 99 / 9 l 69 chaparral yucca Yucca whipplei 30 / 9 r 70 sp prickly-pear Opuntia sp. 1 / 1 r (California goosefoot, Chenopodium californicum) r 71 *slender wild oats Avena barbata 50 / 9 l 72 ~ purple needlegrass Nassella pulchra 1 / 1 l 73 blue dicks Dichelostemma capitatum ssp. capitatum 5 / 2 l (chia, Salvia columbariae) 0.50 b 74 chamise Adenostoma fasciculatum 50 / 9 r ~ (Engelmann oak, Quercus engelmannii) l 75 ashy spike-moss Selaginella cinerascens 20 / 9 l 76 Bigelow's spike-moss Selaginella bigelovii 2 / 1 l 77 bird's-foot fern Pellaea mucronata var. mucronata 3 / 3 l (silver puffs, Uropappus lindleyi) l 78 strigose lotus Lotus strigosus 10 / 3 r 79 *common groundsel Senecio vulgaris 20 / 5 r (Torrey's scrub oak, Quercus acutidens; bush poppy, Dendromecon rigida) r 80 Parish's purple nightshade Solanum parishii 20 / 9 r (goldentop, Lamarckia aurea) l 81 California plantain Plantago erecta 20 / 1 r (meadow-rue, Thalictrum fendleri var. polycarpum) l 82 *nit grass Gastridium ventricosum 2 / 1 l 83 foothill needlegrass Nassella lepida 1 / 1 l 84 hairyleaf redberry Rhamnus pilosa 20 / 9 r (southern honeysuckle, Lonicera subspicata var. denudata) l 85 sp phacelia Phacelia sp. 10 / 2 l 86 threadstem Pterostegia drymarioides 30 / 2 Cross creek to right l (San Diego mountain mahogany, Cercocarpus minutiflorus; eucrypta, Eucrypta chrysanthemifolia var. chrysanthemifolia) I failed to record the first on-trail occurrence of the following taxon, which occurs somewhere after this point 87 San Diego mountain mahogany Cercocarpus minutiflorus / r (sugar bush, Rhus ovata; California everlasting, Gnaphalium californicum) l 88 scarlet larkspur Delphinium cardinale 50 / 9 l (California bee plant, Scrophularia californica ssp. floribunda) l 89 sp Mariposa lily Calochortus sp. 1 / 1 l 90 mission manzanita Xylococcus bicolor 30 / 9 l 91 white-flowering currant Ribes indecorum 5 / 3 r 92 bigberry manzanita Arctostaphylos glauca 10 / 9 l (triangular-fruit sedge, Carex triquetra) l 93 ~ *Mediterranean schismus Schismus barbatus 1 / 1 l (poison oak, Toxicodendron diversilobum) Cross creek to left l 94 San Diego pea Lathyrus vestitus var. alefeldii 5 / 3 l 95 ~ eucrypta Eucrypta chrysanthemifolia var. chrysanthemifolia 1 / 1 r 96 ~ narrow-leaved miner's lettuce Claytonia parviflora ssp. parviflora 5 / 1 r (silverback fern, Pentagramma triangularis ssp. viscosa; ~purple snapdragon, ~Antirrhinum nuttallianum ssp. nuttallianum) r 97 *Australian brass-buttons Cotula australis 10 / 2 r 98 climbing bedstraw Galium nuttallii ssp. nuttallii 5 / 5 l 99 sp annual suncup Camissonia sp. 10 / 3 l 100 Torrey's scrub oak Quercus acutidens 10 / 9 l 101 sugar bush Rhus ovata 2 / 2 l (matchweed, Gutierrezia sarothrae) l Jct. use trail to Iron Mine l 102 red-skinned onion Allium haematochiton 10 / 5 r (California buckwheat, Eriogonum fasciculatum var. polifolium) l 103 southern California morning-glory Calystegia macrostegia 1 / 1 r 104 hollyleaf cherry Prunus ilicifolia ssp. ilicifolia 2 / 2 l 105 coast jepsonia Jepsonia parryi 10 / 1 l 106 silverback fern Pentagramma triangularis ssp. viscosa 50 / 9 l 107 toyon Heteromeles arbutifolia 3 / 3 r (heartleaf penstemon, Keckiella cordifolia) Cross creek to right r 108 mule fat Baccharis salicifolia 2 / 1 r (Mariposa rush, Juncus dubius) b 109 common bedstraw Galium aparine 10 / 2 r 110 milk maids Cardamine californica 50 / 9 r 111 coast-range melic Melica imperfecta 10 / 9 l 112 poison oak Toxicodendron diversilobum 3 / 2 Switchback right r 113 heartleaf penstemon Keckiella cordifolia 10 / 5 l 114 ~ California wood fern Dryopteris arguta 2 / 2 Switchback left Switchback right 115 Eastwood manzanita Arctostaphylos glandulosa ssp. zacaensis 99 / 9 Switchback left r 116 California snowdrop bush Styrax officinalis var. redivivus 99 / 9 r 117 fire reedgrass Calamagrostis koelerioides 99 / 9 r 118 southern Indian pink Silene laciniata ssp. major 30 / 9 r 119 southern honeysuckle Lonicera subspicata var. denudata 20 / 9 r Check for goldback fern l 120 wild celery Apiastrum angustifolium 1 / 1 l (scaly lipfern, Cheilanthes clevelandii) r 121 leafy daisy Erigeron foliosus var. foliosus 50 / 9 r 122 narrowleaf bedstraw Galium angustifolium ssp. angustifolium 10 / 9 r 123 felt-leaved monardella Monardella hypoleuca ssp. lanata 50 / 9 b 124 southern tauschia Tauschia arguta 20 / 9 r 125 scaly lipfern Cheilanthes clevelandii 10 / 3 r 126 bristly bird's beak Cordylanthus rigidus ssp. setigerus 20 / 5 r 127 rush-rose Helianthemum scoparium 99 / 9 r 128 Ramona horkelia Horkelia truncata 30 / 9 r 129 California everlasting Gnaphalium californicum 2 / 2 r 130 white star-lily Zigadenus fremontii 30 / 9 1.00 r "1 mile post" r 131 canyon silktassel Garrya veatchii 1 / 1 b 132 bush poppy Dendromecon rigida 20 / 5 r 133 sp violet Viola sp. 10 / 5 r 134 common skullcap Scutellaria tuberosa 20 / 2 r 135 California filago Filago californica 20 / 1 r 136 pygmy-weed Crassula connata 20 / 1 r 137 *Mediterranean pygmy-weed Crassula tillaea 20 / 1 r 138 ~ Pacific sanicle Sanicula crassicaulis 1 / 1 r 139 sp popcorn flower Plagiobothrys sp. 10 / 1 r 140 ? sharp-toothed annual ? 3 / 1 Switchback right l 141 Cleveland sage Salvia clevelandii 20 / 9 Switchback left b 142 tuberous sanicle Sanicula tuberosa 40 / 9 l 143 silver puffs Uropappus lindleyi 10 / 2 Cross creek with visible water in April 2007 r (miner's lettuce, Claytonia perfoliata ssp. perfoliata) l (goldenrod, Solidago californica) Switchback right Switchback left r (shiny lomatium, Lomatium lucidum) r (Indian warrior, Pedicularis densiflora) b 144 interior live oak Quercus wislizeni var. frutescens 30 / 9 r 145 southern mountain misery Chamaebatia australis 10 / 9 r 146 California bee plant Scrophularia californica ssp. floribunda 5 / 2 T-jct; go right r 147 bushrue Cneoridium dumosum 1 / 1 Trail turns left 90° r 148 Indian warrior Pedicularis densiflora 30 / 9 l 149 ~ seashore bentgrass Agrostis pallens 3 / 3 Trail turns right 90° r (giant needlegrass, Achnatherum coronatum) l 150 woolly-fruited lomatium Lomatium dasycarpum ssp. dasycarpum 20 / 3 r 151 ~ Parish's bluecurls Trichostema parishii 10 / 3 r 152 Mohave yucca Yucca schidigera 1 / 1 1.50 r "1.5 mile post" l Jct. short Overlook Trail r 153 white everlasting Gnaphalium canescens ssp. microcephalum 1 / 1 l 154 everlasting nest-straw Stylocline gnaphaloides 5 / 1 r 155 tinker's penny Hypericum anagalloides 10 / 2 r (thick-leaved yerba santa, Eriodictyon crassifolium var. crassifolium) l (deergrass, Muhlenbergia rigens) l (oracle oak, Quercus kelloggii X Quercus wislizeni var. frutescens) l (Mexican rush, Juncus mexicanus) b 156 thick-leaved yerba santa Eriodictyon crassifolium var. crassifolium 10 / 3 Switchback right l 157 meadow-rue Thalictrum fendleri var. polycarpum 10 / 2 l 158 ? spreading-stiff-hairy tiny ann with alt petioled roundish leaves with truncate base ? 20 / 2 l 159 rigid hedge-nettle Stachys ajugoides var. rigida 10 / 1 l (San Diego sedge, Carex spissa; willow, Salix sp.) l 160 Mexican rush Juncus mexicanus 10 / 1 Cross drainage and switchback left Switchback right l 161 California lace fern Aspidotis californica 1 / 1 2.00 r "2.0 mile post" Switchback left Switchback right Switchback left Switchback right Switchback left l 162 giant needlegrass Achnatherum coronatum 10 / 9 Switchback right Switchback left r Saddle; sign: "Do not cut switchbacks" l 163 ~ rein orchid Piperia cooperi 30 / 9 2.50 r "2.5 mile post" r 164 *gazania Gazania X (mounding hybrid) 2 / 2 r (Second oracle oak, Quercus kelloggii X Quercus wislizeni var. frutescens) End guide at top of Iron Mountain
Comments On Specific Species Isocoma menziesii. The subspecies does not seem to be separable in Southern California. See Comments on the Jepson Manual and A Flora of Southern California by Munz: Isocoma menziesii.
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Copyright © 2007 by Tom Chester, James Dillane and Cindy Burrascano.
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Comments and feedback: Tom Chester
Updated 12 April 2007.