Warren County, NJ


from northeast New Jersey, take Interstate Route 80 west to Exit #19 (Allamuchy- Hackettstown). Bear and turn left on to State Route 517 and proceed south approximately 5 miles to Main Street (U.S. Route 46) in Hackettstown. Turn right onto U.S. Route 46 and proceed west for nine miles. Look for a sign for Trout Hatchery on the left side of the road; turn left and proceed on entrance road approximately 0.5 miles to NREC Building parking lot.

(For maps see:


Mount Mohepinoke heads northeast/southwest along the Pequest River in this area.

The Pequest Watershed Group incorporates townships from Sussex and Warren Counties. and drains an area of about 197 square miles. The access sites include Oxford-Furnace Lake and Lake Marguerite Wildlife Refuge; Kittatinny Valley State Park, Allamuchy Mountain State Park and Jenny Jump State Forest; Pequest Wildlife Management Area, Beaver Brook Wildlife Management Area and Whittingham Wildlife Management Area. The sub watersheds include the Upper Pequest River, the Lower Pequest River and the Beaver Brook.



The name Pequest means in Pequash, "open land."

Each year the Pequest hatchery produces more than 600,000 brook, brown, and rainbow trout for stocking in more than 200 bodies of water that are open to public fishing.

The hatchery is located in the Pequest Wildlife Management Area, which encompasses more than 1,600 acres in the Pequest Valley in scenic Warren County. Below the surface is a large aquifer containing some of the purest water in New Jersey. A network of six wells supplies up to 7,000 gallons of this water a minute to the hatchery at a consistent 50-52 degree Fahrenheit year round.

The Pequest tract, located near the town of Oxford, Warren County, is one of the better trout fishing areas in the state. The area is managed primarily for upland game and fishing. There is good access to the tract along the road and from the railroad.

Acquisition of the tract began in 1956.

Another place to park is in the small space next to the kiln. Until the 1930s, the kiln was used to burn chunks of limestone to produce a powdery lime for the farmers in the area. By spreading it over their land, they could temporarily restore the fertility of the soil by balancing the pH factor.


The Pequest Wildlife Management Area is a tract of more than 1600 acres purchased by the NJDEP to safeguard water supply and provide a place for wildlife-related recreation. It is located on U.S. Route 46, nine miles west of Hackettstown in rural Warren County, western New Jersey. We will first visit a riparian forest community on the floodplain of the Pequest River, a trout stream flowing through a limestone valley. We will look for typical spring wildflowers, including yellow lady's slipper (Cypripedium calceolus), in the rich limestone-based alluvial soils. In the afternoon we will explore the vegetation of the rolling upland fields and forest areas via the Pequest Natural Resource Interpretive Trail System.


R = red

Y = yellow

B = blue

PR = Pequest River


Joseph A. Labriola, John Medallis, Dr. Patrick Cooney


Observation Trail

Scientific Name Common Name date location *

Acer negundo (boxelder) 4/20/97
Acer rubrum (red maple)
Acer saccharum (sugar maple)
Ailanthus altissima (tree of heaven)
Amelanchier arborea (shadbush)
Carpinus caroliniana (musclewood)
Carya ovata (shagbark hickory)
Carya sp. (hickory)
Elaeagnus umbellata (autumn olive) 5/17/97
Fagus grandifolia (American beech) PR
Fraxinus americana (white ash)
Juglans cinerea (butternut walnut)
Juglans nigra (black walnut)
Juniperus virginiana (red cedar)
Liriodendron tulipifera (tulip tree)
Nyssa sylvatica (tupelo)
Ostrya virginiana (eastern hop hornbeam)
Pinus strobus (white pine)
Platanus occidentalis (American sycamore)
Prunus serotina (black cherry)
Prunus sp. (cherry tree) 4/20/97
Pyrus malus (apple tree) 5/17/97
Quercus bicolor (swamp white oak) 5/17/97
Rhus typhina (staghorn sumac)
Salix discolor (pussy willow) 4/20/97
Salix nigra (black willow)
Sassafras albidum (sassafras)
Tilia americana (American basswood)
Ulmus americana (American elm)
Ulmus rubra (slippery elm)

Berberis thunbergii (Japanese barberry)
Cornus alternifolia (alternate leaved dogwood)
Ligustrum sp. (privet)
Lindera benzoin (spicebush) 4/20/97
Lonicera morrowii (Morrow's honeysuckle) 5/17/97
Potentilla fruticosa (shrubby cinquefoil)
Ribes americanum (wild black currant) 5/17/97
Rosa multiflora (multiflora rose)
Rubus idaeus (red raspberry)
Rubus occidentalis (black raspberry)
Rubus phoenicolasius (wineberry)
Rubus sp. (blackberry) 5/17/97
Sambucus canadensis (common elderberry)
Viburnum dentatum var. lucidum (smooth arrowwood viburnum)
Viburnum lentago (sweet viburnum)
Viburnum opulus (highbush cranberry viburnum)
Viburnum prunifolium (blackhaw viburnum) 5/17/97
Vinca minor (periwinkle) 5/17/97 R
Zanthoxylum americanum (northern prickly ash)

Lonicera japonica (Japanese honeysuckle)
Smilax herbacea (carrion flower)
Toxicodendron radicans (poison ivy)

Achillea millefolium (yarrow)
Acorus americanus (sweet flag) R
Agrimonia sp. (agrimony)
Alliaria petiolata (garlic mustard) 4/20/97 5/17/97 R, Y, PR
Allium vineale (field garlic)
Anemone quinquefolia (wood anemone) 5/17/97 PR
Anemonella thalictroides (rue anemone) 5/17/97 PR
Angelica atropurpurea (great angelica) PR
Anthriscus sylvestris (wild chervil) 5/17/97 PR
Arabis glabra (tower mustard) 5/17/97 PR
Arctium sp. (burdock)
Arisaema triphyllum (jack in the pulpit) R, PR
Artemisia vulgaris (common mugwort)
Asarum canadense (wild ginger) 4/20/97 5/17/97 PR
Aster ericoides (many-flowered aster) 9/30/02
Aster lanceolatus (panicled aster) 9/30/02
Aster lowrieanus (Lowry's aster) 9/30/02
Barbarea vulgaris (common wintercress) 5/17/97 R, PR
Caltha palustris (marsh marigold) 5/17/97 PR
Cardamine concatenata (cut-leaved toothwort 4/20/97 PR
Cardamine pensylvanica (Pennsylvania bittercress) 5/17/97 PR
Cardamine rhomboidea (springcress) 5/17/97 PR
Carduus nutans (nodding thistle)
Centaurea maculosa (spotted knapweed) 9/30/02
Cerastium vulgatum (mouse-ear chickweed) 5/17/97 R, PR
Chelidonium majus (celandine) 5/17/97 R, PR
Chelone glabra (white turtlehead)
Cichorium intybus (chicory) 9/30/02
Claytonia virginica (spring beauty) 5/17/97 R, PR
Coronilla varia (crown vetch) 9/30/02
Daucus carota (Queen Anne's lace)
Dianthus armeria (Deptford pink) 9/30/02
Dipsacus sylvestris (teasel)
Erigeron annuus (daisy fleabane) R, PR
Erythronium americanum (trout lily) Y, PR
Eupatorium rugosum (white snakeroot) 9/30/02
Euphorbia cyparissias (cypress spurge) 5/17/97 R, PR
Fragaria virginiana (wild strawberry) 5/17/97 R, PR
Galium aparine (cleavers) 5/17/97 R, PR
Galium mollugo (wild madder)
Geranium maculatum (wild geranium) 5/17/97 R, PR
Geum sp. (avens)
Glechoma hederacea (gill-over-the-ground) 4/20/97 5/17/97 R, PR
Hesperis matronalis (dame's rocket) 5/17/97 PR
Hieracium pilosella (mouse ear hawkweed) 5/17/97 R, PR
Hypericum perforatum (common St. Johnswort)
Impatiens capensis (orange jewelweed)
Impatiens pallida (pale jewelweed)
Iris pseudacorus (yellow flag) PR
Iris versicolor (larger blue flag) PR
Lamium purpureum (purple dead nettle) 4/20/97 R, PR
Laportea canadensis (wood nettle)
Lemna sp. (duckweed)
Leonurus cardiaca (motherwort)
Lepidium campestre (field peppergrass) 5/17/97 R
Lilium canadense (Canada lily)
Linaria vulgaris (butter and eggs)
Lobelia siphilitica (great lobelia) 9/30/02
Lysimachia nummularia (moneywort)
Lythrum salicaria (purple loosestrife)
Maianthemum canadense (Canada mayflower) Y, PR
Mitchella repens (partridgeberry) Y, PR
Mitella diphylla (mitrewort) 5/17/97 PR
Monarda fistulosa (wild bergamot) 9/30/02
Nepeta cataria (catnip)
Oenothera biennis (common evening primrose) 9/30/02
Orchis spectabilis (showy orchis) 5/17/97 PR
Oxalis stricta (yellow wood sorrel) 5/17/97 R, PR
Parnassia glauca (grass-of-parnassus)
Plantago lanceolata (English plantain)
Plantago major (common plantain)
Podophyllum peltatum (mayapple) 5/17/97 R, Y, PR
Polygonatum pubescens (hairy true Solomon's seal) 5/17/97 R, PR
Polygonum persicaria (lady's thumb) 9/30/02
Polygonum virginianum (jumpseed)
Potentilla recta (rough-fruited cinquefoil)
Prenanthes altissima (tall white lettuce)
Prunella vulgaris (self-heal)
Ranunculus abortivus (small-flowered crowfoot) 5/17/97 R, PR
Ranunculus hispidus v. caricetorium (swamp buttercup) 5/17/97 PR
Ranunculus recurvatus (hooked buttercup) 5/17/97 PR
Sanguinaria canadensis (bloodroot) 4/20/97 PR
Sanicula sp. (sanicle)
Scrophularia marilandica (carpenter's square)
Sedum acre (mossy stonecrop)
Senecio aureus (golden ragwort) 5/17/97 R, PR
Smilacina stellata (star-flowered Solomon's seal) 5/17/97 PR
Solidago canadensis (Canada goldenrod) 9/30/02
Symplocarpus foetidus (skunk cabbage) R, PR
Taraxacum officinale (dandelion) 4/20/97 5/17/97 R, PR
Thalictrum dioicum (early meadowrue)
Tiarella cordifolia (foamflower) 5/17/97 PR
Trientalis borealis (starflower)
Trifolium pratense (red clover) 9/30/02
Trifolium sp. (hop clover) 5/17/97 R, PR
Trillium cernuum (nodding trillium) 5/17/97 PR
Typha latifolia (broad-leaved cattail)
Urtica dioica v. procera (tall nettle)
Uvularia perfoliata (perfoliate leaved bellwort) 5/17/97 Y
Verbascum thapsus (common mullein)
Veronica chamaedrys (bird's-eye speedwell) 5/17/97 R, PR
Veronica officinalis (common speedwell)
Veronica serpyllifolia (thyme-leaved speedwell) 4/20/97 5/17/97 R, PR
Vicia sp. (vetch)
Viola conspersa (dog violet) 5/17/97 R, PR
Viola pubescens (smooth yellow violet) 4/20/97 5/17/97 PR
Viola sororia (common blue violet) 5/17/97 R, Y, PR
Zizia aurea (golden alexanders) 5/17/97 PR

Carex laxiflora (sedge)
Carex pensylvanica (Pennsylvania sedge)

Calamagrostis canadensis (blue-joint grass)
Dactylis glomerata (orchard grass)
Phragmites australis (giant reed grass)
Poa annua (annual bluegrass)
Poa pratensis (Kentucky bluegrass)

Ferns and Fern Allies:
Equisetum arvense (field horsetail)
Equisetum hyemale (common scouring rush)
Athyrium filix-femina (red-stiped lady fern)
Botrychium virginianum (rattlesnake fern)
Dryopteris intermedia (intermediate woodfern)
Onoclea sensibilis (sensitive fern)
Osmunda cinnamomea (cinnamon fern)
Polystichum acrostichoides (Christmas fern)
Woodsia ilvensis (rusty-lip woodsia)

From Journal of the Torrey Botanical Society

On a cool, overcast day with a few rain sprinkles, a Torrey group toured the rich floodplain forest of the Pequest River. Fifty species were found in bloom here and in the fields around the fish hatchery. On the floodplain, four species really caught the admiration of the group: yellow lady's slippers (Cypripedium calceolus), showy orchis (Orchis spectabilis), foamflower (Tiarella cordifolia), and nodding trillium (Trillium cernuum). Other species found in bloom on the floodplain included Anemone quinquefolia, Anemonella thalictroides, Asarum canadense, Caltha palustris, Cardamine pensylvanica and C. rhomboidea, Chelidonium majus, Claytonia virginica, Galium aparine, Mitella diphylla, Podophyllum peltatum, Polygonatum pubescens, Quercus bicolor, Ranunculus abortivus, R. hispidus v. caricetorium, and R. recurvatus, Ribes americanum, Senecio aureus, Smilacina stellata, Viburnum prunifolium, Viola conspersa, V. pubescens, and V. sororia, and Zizia aptera. There were a great many sycamore trees (Platanus occidentalis) on the floodplain.

Not in bloom, but on the floodplain were turtlehead (Chelone glabra), great angelica (Angelica atropurpurea) with its purple stem, both types of jewelweed (Impatiens capensis and I. pallida), and northern prickly ash (Zanthoxyllum americanum). An interesting grass in a small pond on the flood plain was blue-joint grass (Calamagrostis canadensis).

On the abandoned railroad tracks was a mass of rough horsetail (Equisetum hyemale). Blooming in the same area were Euphorbia cyparissias, Lonicera morrowii, and an Oxalis sp. Also here, but not in bloom, was carpenter's square (Scrophularia marilandica).

In the fields, in bloom were tower mustard (Arabis glabra), Barbarea vulgaris, Hesperis matronalis, Pyrus malus, and Vinca minor. The remnants of teasel (Dipsacus sylvestris) covered some areas of the fields.

Total attendance was nine. Joe Labriola led the morning session and John Medallis led the afternoon session.