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