Duke Park Island
York Road, Bradley Gardens, Bridgewater Township, Somerset County, NJ


From the north and east, take exit 13 off US 287. Go right (south) on Route 202/206. Go past Somerset Mall on your right. Watch for directional signs. Turn left on Milltown Road and continue to a T-intersection (Old York Road, Rout 567). Turn left and go for about 0.5 mile and you will se a prominent sign showing the entrance to the park.

00.0 White Plains
15.8 Exit 14 Spring Valley
16.4 Exit 14A Garden State
20.6 Exit 14B Airmont/Suffern
23.3 Exit 15 New Jersey
28.2 Park Entrance Road
31.4 Exit 59 Franklin Lakes
32.5 Exit 58 Oakland
33.2 Exit 57 Ringwood
34.8 Cannonball Trail
38.0 Exit 53 Pompton Lakes
38.3 Exit 52AB Riverdale/Wayne
44.5 Exit 47 Route 202/Lincoln Park
45.8 Exit 45 Boonton
48.9 Exit 42 Dover
49.7 Exit 41AB Route 80
50.0 Exit 40AB
51.9 Exit 39 Route 10
53.4 Exit 37 Route 24
55.0 Exit 36 Route 510
55.8 Exit 35 Madison Avenue
57.8 Exit 29 Harter Road
Exit 26B Bernardsville
62.0 Exit 26A exit
63.0 Great Swamp
65 turn left
66 Lord Stirling Park
63 Exit 26A
71 Exit 18 Bedminster
72 US 78
76 Exit 13 Somerville
80 Milltown Road intersection
81.2 Old York Road (left turn)
81.7 Duke Island (on right)


Robert C. Meyer, Jr./Dr. Patrick L. Cooney

Acer negundo (box-elder)
Acer platanoides (Norway maple)
Acer rubrum (red maple)
Acer saccharinum (silver maple)
Betula nigra (river birch)
Carpinus caroliniana (musclewood)
Carya ovata (shagbark hickory)
Carya cordiformis (bitternut hickory)
Carya tomentosa (mockernut hickory)
Cercis canadensis (redbud) 5/14/97
Cornus florida (flowering dogwood) 5/14/97
Crataegus sp. (hawthorn)
Fraxinus americana (white ash)
Gleditsia triacanthos (honey locust)
Juniperus virginiana (red cedar)
Nyssa sylvatica (tupelo)
Platanus occidentalis (American sycamore)
Prunus serotina (black cherry)
Quercus palustris (pin oak)
Salix spp. (willows) 5/14/97
Tilia americana (American basswood)
Ulmus americana (American elm)

Berberis thunbergii (Japanese barberry)
Cornus amomum (swamp dogwood)
Elaeagnus umbellata (autumn olive)
Euonymus alatus (winged euonymus) 5/14/97
Ligustrum sp. (privet)
Lindera benzoin (spicebush)
Lonicera morrowii (Morrow's honeysuckle) 5/14/97
Rubus phoenicolasius (wineberry)
Rubus occidentalis (black raspberry)
Viburnum dentatum (arrowhead viburnum)
Viburnum prunifolium (blackhaw viburnum) 5/14/97

Cuscuta sp. (dodder) 9/9/95
Lonicera japonica (Japanese honeysuckle)
Parthenocissus quinquefolia (Virginia creeper)
Polygonum scandens (climbing false buckwheat) 9/9/95
Toxicodendron radicans (poison ivy)

Acalypha rhomboidea (three-seeded mercury)
Achillea millefolium (yarrow)
Ajuga repens (bugleweed) 5/14/97
Alliaria petiolata (garlic mustard) 5/14/97
Allium sp. (onion species)
Allium vineale (field garlic)
Ambrosia artemisiifolia (common ragweed) 9/9/95
Ambrosia trifida (great ragweed) 9/9/95
Arisaema triphyllum (Jack-in-the-pulpit)
Artemisia vulgaris (common mugwort) 9/9/95
Aster divaricatus (white wood aster) 9/9/95
Aster dumosus (long-stalked aster) 9/9/95
Barbarea vulgaris (common wintercress) 5/14/97
Bidens polylepis (Ozark tickseed-sunflower) 9/9/95
Bidens frondosa (beggar ticks) 9/9/95
Bidens connata (swamp beggar-ticks) 9/9/95
Boehmeria cylindrica (false nettle)
Capsella bursa-pastoris (shepherd's purse) 5/14/97
Cardamine pratensis (cuckoo flower) 5/14/97
Centaurea dubia (short-fringed knapweed) 9/9/95
Centaurea maculosa (spotted knapweed) 9/9/95
Cichorium intybus (chicory) 628 9/9/95
Claytonia virginica (spring beauty) 5/14/97
Commelina communis (Asiatic dayflower) 9/9/95
Conyza canadensis (horseweed) 9/9/95
Dianthus armeria (Deptford pink) 9/9/95
Echinocystis lobata (wild cucumber) 9/9/95
Eclipta prostrata (yerba-de-tajo) 9/9/95
Elodea nuttallii (free-flowered water weed)
Epilobium coloratum (purple-leaved willowherb) 9/9/95
Erechtites hieraciifolia (pilewort) 9/9/95
Erythronium americanum (trout lily)
Eupatorium rugosum (white snakeroot) 9/9/95
Eupatorium fistulosum (trumpetweed) 598 9/9/95
Eupatorium perfoliatum (boneset) 9/9/95
Euphorbia nutans (eyebane spurge) 9/9/95
Euphorbia maculata (milk purslane) 335 9/9/95
Euthamia graminifolia (grass-leaved goldenrod) 9/9/95
Geranium maculatum (wild geranium) 5/14/97
Geum canadense (white avens)
Glechoma hederacea (gill-over-the-ground) 5/14/97
Gnaphalium obtusifolium (sweet everlasting) 9/9/95
Heracleum lanatum (cow parsnip)
Lamium purpureum (purple dead nettle) 5/14/97
Lemna sp. (duckweed)
Lespedeza repens (creeping bush clover) 9/9/95
Linaria vulgaris (butter-and-eggs) 9/9/95
Lindernia dubia (false pimpernel) 9/9/95
Lysimachia nummularia (moneywort)
Lythrum salicaria (purple loosestrife) 9/9/95
Mertensia virginica (Virginia bluebells) 5/14/97
Myriophyllum sp. (water milfoil)
Oenothera biennis (common evening primrose) 9/9/95
Oxalis europaea (yellow wood sorrel) 358 9/9/95
Perilla frutescens (perilla-mint)
Plantago lanceolata (English plantain)
Plantago major (common plantain)
Polygonum arenastrum (dooryard knotweed) 9/9/95
Polygonum cespitosum (cespitose knotweed) 9/9/95
Polygonum lapathifolium (nodding smartweed) 9/9/95
Polygonum persicaria (lady's thumb) 9/9/95
Polygonum pensylvanicum (pink knotweed) 9/9/95
Polygonum punctatum dotted smartweed 9/9/95
Polygonum sp. (knotweed)
Polygonum virginianum (jumpseed)
Ranunculus recurvatus (hooked crowfoot)
Rumex crispus (curled dock)
Rumex obtusifolius (broad-leaved dock)
Saponaria officinalis (bouncing bet)9/9/95
Solanum carolinense (horse nettle) 9/9/95
Solanum nigrum (black nightshade) 9/9/95
Solidago caesia (blue-stemmed goldenrod) 9/9/95
Solidago gigantea (late goldenrod) 9/9/95
Symplocarpus foetidus (skunk cabbage)
Taraxacum officinale (dandelion) 5/14/97
Thlaspi arvense (pennycress) 5/14/97
Trifolium pratense (red clover) 286 9/9/95
Urtica dioica (stinging nettle)
Utricularia sp. (a yellow bladderwort) 494 9/9/95
Verbena hastata (blue vervain) 428 9/9/95
Verbena urticifolia (white vervain) 428
Vernonia noveboracensis (New York ironweed) 608 9/9/95
Veronica serpyllifolia (thyme-leaved speedwell) 5/14/97
Viola sororia (common blue violet) 5/14/97
Xanthium strumarium (common clotbur) 550

Juncus tenuis (path rush)

Carex crinita (sedge)
Carex vulpinoidea (sedge)
Cyperus strigosus (umbrella sedge)
Cyperus diandrus or bipartitus
Scirpus validus (soft-stem bulrush)
Scirpus cyperinus (woolly grass bulrush)

Agrostis perennans var. perennans (autumn bentgrass)
Anthoxanthum odoratum (sweet vernal grass) 5/14/97
Arthraxon hispidus (arthraxon)
Elytrigia repens (quack grass)
Cinna arundinacea (wood reedgrass)
Dactylis glomeratus (orchard grass)
Digitaria ischaemum (smooth crab grass)
Duchesnia indica (Indian strawberry) 9/9/95
Echinochloa crus-galli (barnyard grass)
Echinochloa walteri (salt-marsh or freshwater cockspur)
Eleusine indica (goose grass)
Elymus virginicus (wild rye grass)
Elymus hystrix (bottle-brush grass)
Elymus riparius (streambank wild rye grass)
Eragrostis cilianensis (stink grass)
Eragrostis pectinacea (Carolina lovegrass)
Leersia oryzoides (rice cutgrass)
Leersia virginiana (white grass)
Microstegium vimineum (Japanese stilt grass) 815
Muhlenbergia schreberi (nimblewill)
Muhlenbergia frondosa (muhly grass)
Panicum clandestinum (deer-tongue grass)
Panicum dichotomiflorum (fall panic grass)
Panicum philadelphicum (Philadelphia panic grass)
Panicum virgatum (switch grass)
Phalaris arundinacea (reed canary grass)
Poa annua (annual bluegrass) 5/14/97
Poa compressa (Canada bluegrass)
Poa pratensis (Kentucky bluegrass)
Poa trivialis (rough-stalked bluegrass)
Schizachyrium scoparium (little bluestem grass)
Setaria glauca (yellow foxtail grass)
Setaria faberi (faber's foxtail)
Sorghastrum nutans (Indian nutgrass)

Matteuccia struthiopteris (ostrich fern)
Osmunda claytoniana (interrupted fern)

Isoetes sp. (quillwort)

From the Journal of the Torrey Botanical Society.

The North Branch and South Branch of the Raritan River meet in the park to form the Raritan River proper. There is also a water power canal that runs through the area.

Most plants in bloom were found in moist shaded areas or adjacent to the river bank. Often only one or two samples of a species were found to be in bloom, while most others had succumbed to the drought. In spite of the severe drought, we were able to identify and record a larger number of species even though most of the vegetation had withered. This was due to the fact that most of the participants on the walk were very knowledgeable about plants.

The area by the Raritan River proved to be a superb one for interesting blooms. There were many smartweeds found here as elsewhere, including Polygonum arenastrum, P. cespitosum, P. lapathifolium, P. persicaria, P. pensylvanica, P. punctatum, P. scandens and P. virginianum.

A new plant to several of the attendees was yerba-de-tajo (Eclipta prostrata) with very short, white, pistillate rays. Another plant that caught the group's attention was cup plant (Silphium perfoliatum). And a third interesting species was the beautiful perilla-mint (Perilla frutescens) with dark purple stem and thick, curduroyed, dark green leaves. It is a native of India sometimes used as a condiment. Other plants along the river included Chenopodium ambrosioides, Epilobium coloratum, Eupatorium fistulosum, Heteranthera reniformis, Lindernia dubia, Ludwigia palustris, Lythrum salicaria, and Vernonia noveboracensis.

In the woody areas were dried out specimens of cow parsnip (Heracleum lanatum) and blooming species of Duchesnea indica, Aster divaricatus and A. cordifolius, and Eupatorium rugosum.

The group identified twenty-nine grasses, some of the early bloomers being in poor condition. The grasses were: Agropyron repens, Agropyron perennans var. perennans, Arthraxon hispidus, Cinna arundinacea, Dactylis glomerata, Digitaria ischaemum, Echinochloa crus-galli and E. walteri, Eleusine indica, Elymus hystrix, E. riparius, and E. virginicus, Eragrostis cilianensis and E. pectinacea, Leersia oryzoides and L. virginiana, Microstegium vimineum, Muhlenbergia frondosa and M. schreberi, Panicum clandestinum, P. dichotomiflorum, P. philadelphicum, and P. virgatum, Phalaris arundinacea, Poa compressa, Schizachyrium scoparium, Setaria faberi and S. glauca, and Sorghastrum nutans.

The day was cloudy, but pleasant. The leader was Robert. C. Meyer, Jr. Attendance was 12.