Bear Creek Plant List

In June 2001, Pacific Habitat Services, Inc. of Wilsonville released City of Molalla, Local Wetlands & Riparian Inventories. This study was funded using a state Wetland Planning Grant from the Department of Land Conservation and Development (DLCD). The inventory covers a 1,780 acre area, of which more than 1,000 acres are in the Bear Creek Watershed.

The list below is extracted from Appendix F of City of Molalla, Local Wetlands & Riparian Inventories. The codes attached to each plant are wetland indicators, defined as follows:

  • OBL – Obligate wetland. Estimated to occur almost exclusively in wetlands (>99%).
  • FACW – Facultative wetland. Estimated to occur 67-99% of the time in wetlands.
  • FAC – Facultative. Occur equally in wetlands and non-wetlands (34-66%).
  • FACU – Facultative upland. Usually occur in non-wetlands (67-99%).
  • UPL – Obligate upland. Estimated to occur almost exclusively in non-wetlands (>99%).
  • NI – Has not yet received a wetland indicator status, but is probably not obligate upland.

TREES

big leaf maple Acer macrophyllum FACU
black cottonwood Populus trichocarpa FAC
Douglas fir Pseudotsuga menziesii UPL
grand fir Abies grandis FACU-*
Oregon ash Fraxinus latifolia FACW
Oregon white oak Quercus garryana UPL
Pacific crabapple Malus fusca FACW
Pacific willow Salix lasiandra FACW+
Ponderosa pine Pinus ponderosa UPL
quaking aspen Populus tremula FAC+
red alder Alnus rubra FAC
Scotch pine Pinus sylvestris UPL
Scouler’s willow Salix scouleriana FAC
sweet cherry Prunus avium UPL
vine maple Acer circinatum FAC

SHRUBS & WOODY VINES

beaked hazelnut Corylus cornuta FACU
California dewberry Rubus ursinus FACU
cascara buckthorn Rhamnus purshiana FAC
climbing nightshade Solanum dulcamara FAC+
clustered rose Rosa pisocarpa FAC
Douglas hawthorn Crataegus douglasii FAC
Douglas’ spiraea Spiraea douglasii FACW
English ivy Hedera helix UPL
English holly Ilex aquifolium UPL
evergreen blackberry Rubus laciniatus FACU+
Himalayan blackberry Rubus discolor FACU
Indian plum Oemleria cerasiformis FACU
Nootka rose Rosa nutkana FAC
ocean spray Holodiscus discolor UPL
ornamental hawthorn Crataegus monogyna FACU+
Pacific nine-bark Physocarpus capitatus FACW
Piper’s willow Salix piperi FAC
poison oak Rhus diversiloba UPL
red osier dogwood Cornus stolonifera FACW
Saskatoon serviceberry Amelanchier alnifolia FACU
Scot’s broom Cytisus scoparius UPL
Sitka willow Salix sitchensis FACW
snowberry Symphoricarpos albus FACU
sweetbriar rose Rosa eglanteria FACW
tall Oregon grape Berberis aquifolium UPL
western thimbleberry Rubus parviflorus FAC

FORBS

American bugleweed Lycopus americanus OBL
American speedwell Veronica americana DBL
American purple vetch Vida americana FAC
birds-foot trefoil Lotus corniculatus FAC
black nightshade Solanum nigrum FACU
bracken fern Pteridium aquilinum FACU
broadleaved water plantain Alisma plantago-aquatica OBL
bull thistle Cirsium vulgare FACU
California false helleborre Veratrum californicum FACW+
Canada thistle Cirsium arvense FACU+
Canada horseweed Conyza canadensis FACU
Carolina geranium Geranium carolinianum UPL
catchweed bedstraw Galium aparine FACU
common burdock Arctium minus UPL
common camas Camassia quamash FACW
common centaury Centaurum umbellatum FAC
common chickweed Cerastium vulgatum FACU
common St. John’s wort Hypericum perforatum UPL
common plantain Plantago major FACU+
common groundsel Senecio vulgaris FACU
common chickweed Stellaria media FACU
common tansy Tanacetum vulgare FACU
common dandelion Taraxacum officinale FACU
common mullein Verbascum thapsis UPL
common vetch Vida sativa UPL
creeping loosestrife Lysimachia nummularia FACW
creeping buttercup Ranunculus repens FACW
curly dock Rumex crispus FAC+
curve-pod yellowcress Rorippa curvisiliqua OBL
dense flower spike primrose Boisduvalia densiflora FACW
doubtful chickweed Cerastium dubium NOL
dove foot geranium Geranium molle UPL
duckweed Lemna minor OBL
English plantain Plantago lanceolata FAC
everlasting wild pea Lathyrus latifolius UPL
feather false-solomon’s seal Smilacina racemosa FAC
few-seed bittercress Cardamine oligosperma FAC
field bindweed Convolvulus arvensis UPL
field woodrush Luzula campestris FAC
field mint Mentha arvensis FACW
fringecup Tellima grandiflora UPL
hairy cats-ear Hypochaeris radicata FACU*
hairy hawkbit Leontodon nudicaulis UPL
heal-all Prunella vulgaris FACU+
hedgenettle Stachys cooleyae FACW
hyssop loosestrife Lythrum hyssopifolia OBL
lady fern Athyrium filix-femina FAC
ladysthumb Polygonum persicaria FACW
large leaf avens Geum macrophyllum FACW-*
lemon balm Melissa officinalis UPL
licorice fern Polypodium glycyrrhiza UPL
line-leaf montia Montia linearis NOL
little buttercup Ranunculus uncinatus FAC
lowland cudweed Gnaphalium palustre FAC+
marsh seedbox Ludwigia palustris OBL
marsh speedwell Veronica scutellata DBL
moth mullein Verbascum blattaria UPL
mountain sweet cicley Osmorhiza chilensis UPL
nipplewort Lapsana communis UPL
ox-eye daisy Chrysanthemum leucanthemum UPL
pennyroyal Mentha pulegium OBL
peppermint Mentha x piperita FACW+
periwinkle Vinca major UPL
piggy-back plant Tolmiea menziesii FAC
pineapple weed Matricaria matricarioides FACU
pointed blue-eyed grass Sisyrinchium augustifolium FACW
poison hemlock Conium maculatum FAC+
prickly lettuce Lactuca serriola FACU
prickly sowthistle Sonchus asper FAC
purple loosestrife Lythrum salicaria FACW+
Queen Anne’s lace Daucus carota UPL
red dead-nettle Lamium purpureum UPL
red clover Trifolium pratense FACU
Robert’s geranium Geranium robertianum UPL
rough hawksbeard Crepis setosa UPL
rough cockle bur Xanthium strumarium FAC
shaggy horkelia Horkelia congesta ssp. congesta NOL
sickle-keeled lupine Lupinus albicaulis UPL
slender vetch Vida tetrasperma UPL
small flower forget-me-not Myosotis laxa OBL
sour dock Rumex acetosella FACU+
Spanish clover Lotus purshiana UPL
stinging nettle Urtica dioica FAC+
straight beak buttercup Ranunculus orthorhynchus FACW
subterranean clover Trifolium subterraneum UPL
suckling clover Trifolium dubium UPL
swamp smartweed Polygonum hydropiperoides OBL
sword fern Polystichum munitum FACU
tansy ragwort Senecio jacobaea FACU
tarweed Madia sativa FACU
teasel Dipsacus sylvestris FAC
thyme-leaved speedwell Veronica serpyllifolia FAC
water starwort Callitriche stagnalis OBL
water hemlock Cicuta douglasii OBL
water cress Rorippa nasturtium aquaticum OBL
water-parsley Oenanthe sarmentosa OBL
Watson’s willow-herb Epilobium watsonii FACW
western touch-me-not Impatiens noli-tangere FACW
white clover Trifolium repens FAC
willow weed Polygonum lapathifolium FACW
willow dock Rumex salicifolius FACW
yellow mustard Brassica campestris UPL
yellow and blue forget-me-not Myosotis discolor FACW
yellow parentucellia Parentucellia viscosa FAC
yellow salsify Tragopogon dubius UPL

GRAMINOIDS

American sloughgrass Beckmannia syzigachne DBL
annual bluegrass Poa annua FAC
broad-leaf cattail Typha latifolia OBL
burreed Sparganium emersum OBL
California oatgrass Danthonia californica ..
colonial bentgrass Agrostis tenuis FAC
common spikerush Eleocharis palustris OBL
common velvet grass Holcus lanatus FAC
common timothy Phleum pratense FAC
creeping bentgrass Agrostis stolonifera FAC
crested dogtail grass Cynosurus cristatus UPL
daggerleaf rush Juncus ensifolius FACW
dense sedge Carex densa OBL
Dewey’s sedge Carex deweyana FACU
field horsetail Equisetum arvense FAC
green sheath sedge Carex feta FACW
hairy crabgrass Digitaria sanguinalis FACU
hare’s foot sedge Carex leporina FACW
inflated sedge Carex vesicaria OBL
Italian ryegrass Lotium multiflorum UPL
Kentucky bluegrass Poa pratensis FAC
large barnyard grass Echinochloa crus-galli FACW
little prickly sedge Carex echinata NT
meadow foxtail Alopecuris pratensis FACW
meadow barley Hordeum brachyantherum FACW
northwestern manna grass Glyceria occidentalis OBL
one-sided sedge Carex unilateralis FACW
orchard grass Dactylis glomerata FACU
ovate spikerush Eleocharis ovata OBL
perennial rye grass Lotium perenne FACU
red fescue Festuca rubra FAC
reed canary grass Phalaris arundinacea FACW
rice cut grass Leersia oryzoides OBL
ripgut brome Bromus rigidus UPL
rough horsetail Equisetum hyemale FACW
rough bluegrass Poa triviatis FACW
sawbeak sedge Carex stipata OBL
slender wheatgrass Agropyron trachycaulum FAC
slender rush Juncus tenuis FACW
slough sedge Carex obnupta OBL
small-fruit bulrush Scirpus microcarpus OBL
smooth crabgrass Digitaria ischaemum FACU
soft brome Bromus mollis UPL
soft rush Juncus effusus FACW
spreading rush Juncus patens FACW
sweet vernal grass Anthoxanthum odoratum FACU
tall fescue Festuca arundinacea FAC
tall mannagrass Glyceria elata OBL
toad rush Juncus bufonius FACW
tufted hairgrass Deschampsia cespitosa FACW
water foxtail Alopecuris geniculatus DBL
witchgrass Panicum capillare FAC
wooly sedge Carex pellita OBL