Friends of Marymoor Park

Marymoor Park Plant List

Marymoor Park plant inventory conducted on 10/15/00 and 5/31/02 on Washington Native Plant Society field trips led by Fred Weinmann.. The list combines observations from both dates. Very few species were seen in October that were not seen in May.  No attempt has been made by Fred to catalog the planted species around the Clise Mansion, nor the area north of the through access road, nor west of the Sammamish Slough.

Nomenclature has been updated and will, therefore, not be the same as found in Hitchcock and Cronquist (1973). Nomenclature is from the book by Arthur Lee Jacobson, Wild Plants of Greater Seattle (2001). 151 species; 64 native, 87 introduced, 12 listed as noxious. N=Native to King County; I=Introduced species; f=flower or fruit of current year; nox.= listed as category A, B, or C on 2002 King County Noxious Weed List. Vascular plants by Fred Weinmann; Bryophytes by Denise Liguori.

A couple of additions have been made to the list based on additional visits by Michael Hobbs.

Scientific name Common name Origin
 

Coniferous Evergreen Trees

Pinus contorta v. latifolia Shore pine N, planted
Thuja plicata Western red cedar N, planted
Tsuga heterophylla Western hemlock N
Pseudotsuga menziesii Douglas fir N
 

Deciduous Trees

Acer circinatum Vine maple N, f
Acer macrophyllum Bigleaf maple N, f
Alnus rubra Red alder N
Betula pendula European white birch I, f
Cornus nuttallii Pacific dogwood N
Crataegus monogyna Common hawthorn I, f
Crataegus phaenopyrum Washington hawthorn I, f
Malus x domestica Domestic apple I, f
Fraxinus latifolia Oregon ash N, f
Populus balsamifera Black cottonwood N, f
Populus tremuloides Quaking aspen N
Prunus avium Mazzard cherry I, f
Prunus cerasifera Cherry plum I
Prunus domestica European plum I
Prunus emarginata Bitter cherry N, f
Rhamnus purshiana Cascara N, f
Salix geyeriana Geyer’s willow N, f
Salix lucida s. lasiandra Pacific willow N, f
Salix piperi Piper's willow N
Salix scouleriana Scouler’s willow N, f
Salix sitchensis Sitka willow N, f
Sorbus aucuparia European Mountain Ash (Rowan tree) I, f
 

Broadleaf Evergreen Trees

Arbutus menziesii Madrone N, f
Ilex aquifolium English holly I
Prunus laurocerasus English laurel I
 

Deciduous Shrubs

Corylus avellana Cultivated hazelnut I
Corylus cornuta v. californica Western beaked hazelnut N
Cornus sericea s. occidentalis Red osier dogwood N, f
Lonicera involucrata Black twinberry N, f
Oemleria cerasiformis Indian plum N, f
Physocarpus capitatus Pacific ninebark N, planted
Ribes lacustre Swamp black gooseberry N, planted
Ribes sanguineum Redflower gooseberry N, planted
Rosa nutkana Nootka rose N, planted
Rosa pisocarpa Peafruit rose (Swamp rose) N
Sambucus racemosa Red elderberry N, f
Spiraea douglasii Hardhack N
Symphoricarpos albus Snowberry N
Vaccinium corymbosum Common blueberry I
Viburnum opulis Highbush cranberry I, f
 

Broadleaf Evergreen Shrubs

Berberis aquifolium Tall Oregon grape N, f
Cytisus scoparius Scot’s broom I, f, nox
 

Woody Vines

Hedera helix English ivy I, nox
Lonicera ciliosa Orange honeysuckle N
Lonicera periclymenum European honeysuckle I
 

Brambles

Rubus armeniacus Himalaya blackberry I
Rubus laciniatus Cutleaf blackberry I
Rubus parviflorus Thimbleberry N, f
Rubus spectabilis Salmonberry N, f
Rubus ursinus Trailing blackberry N, f
 

Wildflowers and Weeds

Achillea millefolium Yarrow N/I
Aphanes australis Slender parsley piert I, f
Arabidopsis thalliana Mouse-ear cress I, f
Bellis perennis English lawn daisy I, f
Bidens frondosa Leafy beggar-tick N
Brassica campestris Field mustard I, f
Callitriche stagnalis Common water starwort I
Capsella bursa-pastoris Shepherd’s purse I, f
Cardamine hirsuta Hairy shotweed I, f
Cerastium glomeratum Sticky mouse-ear I, f
Cerastium vulgatum Common mouse-ear I, f
Cirsium arvense Creeping thistle I, nox
Cirsium vulgare Bull thistle I, nox
Convolvulus arvensis Field bindweed I, nox
Crepis capillaris Smooth hawk’s beard I
Epilobium ciliate ssp. watsonii Watson’s willowherb I
Filago minima? Small cudweed I
Fragaria vesca Woodland strawberry N, f
Galium aparine Common bedstraw N, f
Galium trifidum Marsh cleavers N, f
Geranium dissectum Cut-leaf geranium I, f
Geranium molle Dovefoot geranium I, f
Geranium robertianum Herb-robert I, f
Geum macrophyllum Big-leaf avens N, f
Glechoma hederacea Creeping charlie I
Hypochaeris radicata Hairy cats-ear I, f
Iris pseudacorus Yellow flag I, f, nox.
Lactuca muralis Wall lettuce I
Lamium purpureum Purple dead nettle I, f
Lapsana communis Nipplewort I, f
Lemna minor Common duckweed N
Lotus corniculatus Birdsfoot trefoil I
Lotus micranthus Small-flowered lotus N, f
Ludwigia palustrus Water purslane N
Lycopus americanus Water horehound N
Lysimachia vulgaris Garden loosestrife I, nox
Lythrum salicaria Purple loosestrife I, nox
Matricaria discoidea Pineapple weed I, f
Mycelis muralis Wall lettuce I
Myriophyllum spicatum Eurasian water milfoil I
Najas flexilis Wavy water-nymph N
Nuphar polysepalum Yellow water lily N, f
Nymphaea odorata White water lily I, f, nox
Oenanthe sarmentosa Water parsley N
Plantago lanceolata English plantain I, f
Plantago major Common plantain I, f
Polygonum amphibium Water smartweed N
Polygonum aviculare Doorweed I
Polygonum hydropiperoides Waterpepper N
Polygonum persicaria Spotted smartweed I
Potentilla palustris Swamp cinquefoil N
Prunella vulgaris var. vulgaris Self heal I
Ranunculus acris Meadow buttercup I, f
Ranunculus repens Creeping buttercup I, f
Rorippa curvisiliqua Western yellow-cress N
Rumex acetocella Sheep sorrel I, f
Rumex crispus Curly dock I
Sagina occidentalis Western pearlwort N, f
Scutellaria lateriflora Mad dog skullcap N
Solanum dulcamera Bittersweet nightshade I
Sonchus arvensis Field sow thistle I, nox
Spergularia rubra Red sand spurry I, f
Stellaria media Garden chickweed I, f
Tanacetum vulgare Common tansy I, nox.
Taraxacum officinale Dandelion I, f
Trifolium pratense Red clover I, f
Trifolium repens White clover I, f
Urtica dioica Stinging nettle N, f
Utricularia vulgaris Common bladderwort N, f
Veronica arvensis Wall speedwell I, f
Veronica scutellata Marsh speedwell N
Vicia sativa Common vetch I, f
 

Rushes, Sedges, and Grasses

Agrostis capillaris Colonial bentgrass I
Aira caryophyllea Silvery hairgrass I, f
Aira praecox Little hair grass I, f
Anthoxanthum odoratum Sweet-vernal grass I, f
Bromus diandrus Ripgut brome I, f
Bromus mollis Smooth brome I, f
Bromus sitchensis Sitka brome N
Carex deweyana Dewey’s sedge N, f
Carex lenticularis Lens-fruited sedge N, f
Carex obnupta Slough sedge N, f
Dactylus glomerata Orchard grass I, f
Festuca arundinacea Tall fescue I, f
Festuca rubra v. rubra Red fescue I, f
Holcus lanatus Velvet grass I, f
Hordeum marinum Farmer’s foxtail I, f
Juncus articulatus Jointed rush N
Juncus bufonius Toadrush N
Juncus effusus var. effusus European soft rush I
Juncus tenuis Slender rush N, f
Lolium perenne Perennial ryegrass I, f
Phalaris arundinacea Reed canary-grass I, nox
Phleum pratense Timothy I
Poa annua Annual bluegrass I, f
Poa pratensis Kentucky bluegrass I
Poa trivialis Rough bluegrass I, f
Scirpus acutus Hardstem bulrush N, f
Typha latifolia Common cattail N
Vulpia myuros Rat-tail fescue I, f
 

Ferns and Horsetails

Athyrium filix-femina Lady fern N
Equisetum arvense Field horsetail N
Polypodium glycyrrhiza Licorice fern N
Polystichum munitum Sword fern N

 

Bryophytes
Dendroalsia abietina
Grimma sp.
Isothecium stoloniferum
Neckera douglasii
Orthotrichium lyellii
Polytrichum juniperinum
Porella navicularis (liverwort)
Racomitrium sp.
Rhytidiadelphus triquetrus

 

 

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