HOOK MOUNTAIN
Route 9W, Rockland County, NY


Directions:

By car: Route 9W to Upper Nyack; park in the vacant lot on the west side of Route 9W between the auto body shop and the Wesco Building. They may have taken the Wesco sign down so park just north of the intersection with Christian Herald Road across from a gas station. By bus: Red & Tan bus 9A leaves at 9:10 a. m. from platform 22 of George Washington Bridge Terminal (confirm with bus company). Get off at top of Old Mountain Road at Route 9W (bus comes up Old Mountain Road, then turns right to continue up hill past gas station; this turn is the location of the bus stop). See car directions for exact meeting spot.


Geology:

This is part of the Palisades.  The elevation is more than 800 feet.


History:

In the 1830s Rockland Lake became the site of an important ice industry. They harvested ice cake for the spring-fed lake. The ice was transported to Hudson River boats. There was a cog or gravity-incline railway which ran through Trough Hollow, the gap in the Palisades connecting the lake to Rockland (Slaughter's) Landing 300 feet below.

At one time the lake's Knickerbocker Ice Company employed over 2,000 people. The industry was closed by the coming of mechanical refrigeration in the 1920s.

Also in the 1830s, in the Hook Mountain area there were 31 quarries along the river from Grandview to Upper Nyack. This business reached its peak in the 1890s with the development of dynamite and better rock moving and crushing machines and equipment. (Serrao 1986:25)

In 1846 almost 11,000 cords from Hook Mountain and the Tors were consumed by the Haverstraw brick-yards. The brickyards also dug lots of holes to get clay.


PLANT LIST:
Nancy Slowik


Acer negundo (box elder) 4/18/95 4/22/95 4/24/95
Acer nigrum (black maple)
Acer platanoides (Norway maple)
Acer rubrum (red maple)
Acer saccharinum (silver maple)
Acer saccharum (sugar maple)
Achillea millefolium (yarrow) 6/19/99 7/18/98
Agrimonia gryposepala (common agrimony)
Agropyron repens (quack grass)
Agrostis perennans (autumn bent grass)
Ailanthus altissima (tree of heaven)
Alliaria petiolata (garlic mustard) 4/22/95 6/19/99 7/18/98
Allium canadense (wild garlic)
Allium tricoccum (wild leek)
Allium vineale (field garlic)
Ambrosia artemisiifolia (common ragweed)
Amelanchier canadensis (serviceberry)
Amphicarpaea bracteata (hog peanut)
Andropogon gerardii (big bluestem grass)
Anemone quinquefolia (wood anemone)
Anemone virginiana (thimbleweed)
Anemonella thalictroides (rue anemone) 4/18/95 4/22/95 4/24/95 5/25/96
Antennaria neglecta (field pussytoes) 4/18/95
Antennaria plantaginifolia (plantain-leaved pussytoes)
Anthoxanthum odoratum (sweet vernal grass)
Aquilegia canadensis (wild columbine) 5/15/95 5/25/96
Arabidopsis thaliana (mouse-ear cress)
Arabis hirsuta (hairy rockcress) 4/18/95
Arabis laevigata (smooth rock-cress) 4/18/95 4/24/95
Arabis lyrata (lyre-leaved rock cress)
Aralia nudicaulis (wild sarsparilla) 5/15/95
Arctium minus (common burdock)
Arisaema triphyllum (Jack-in-the-pulpit) 4/24/95 5/25/96
Artemisia vulgaris (common mugwort)10/11/97
Asarum canadense (wild ginger) 4/25/92
Asclepias verticillata (whorled milkweed) 7/18/98
Asclepias viridiflora (green milkweed) 6/19/99 in fl bud; 7/18/98
Asparagus officinalis (asparagus) 5/25/96
Asplenium platyneuron (ebony spleenwort)
Aster cordifolius (heart-leaved aster) 10/11/97
Aster divaricatus (white wood aster) 10/11/97
Aster lanceolatus var. simplex (lanced-leaved aster) 10/11/97
Aster lateriflorus (aster) 10/11/97
Aster patens (aster) 10/11/97
Aster pilosus var. pringlei (aster) 10/11/97
Aster undulatus (aster) 10/11/97
Athyrium felix-femina (lady fern)
Barbarea vulgaris (common winter cress) 5/15/95 5/25/96
Berberis thunbergii (Japanese barberry)
Betula lenta (black birch)
Betula populifolia (gray birch)
Bromus inermis (smooth brome grass)
Bromus tectorum (downy brome grass) 5/25/96
Caltha palustris (marsh marigold)
Capsella bursa-pastoris (shepherd's purse) 5/25/96
Cardamine parviflora (small-flowered bitter-cress) 4/25/92
Cardamine pensylvanica (Pennsylvania bittercress) 5/25/96
Carex laxiflora type
Carex pensylvanica (Pennsylvania sedge) 4/18/95
Carex spp. (sack sedges)
Carpinus caroliniana (musclewood)
Carya cordiformis (bitternut hickory)
Carya glabra (pignut hickory)
Carya ovata (shagbark hickory)
Carya tomentosa (mockernut hickory)
Catalpa speciosa (northern catalpa)
Caulophyllum thalictroides (blue cohosh)
Ceanothus americanus (New Jersey tea)
Celastrus orbiculatus (Asiatic bittersweet) 5/25/96
Celtis occidentalis (hackberry)
Cerastium arvense (field chickweed) 4/18/95 5/25/96
Chelidonium majus (celandine) 5/15/95 4/25/92
Chenopodium album (pigweed) 10/11/97
Cichorium intybus (chicory) 6/19/99 10/11/97 7/18/98
Circaea lutetiana (enchanter's nightshade) 6/19/99 7/18/98
Comandra umbellata (bastard toadflax) 5/15/95 5/25/96
Commelina communis (Asiatic dayflower) 10/11/97
Conopholis americana (squawroot)
Conyza canadensis (horseweed)
Cornus florida (flowering dogwood) 5/15/95
Cornus racemosa (gray-stemmed dogwood)
Corydalis flavula (yellow corydalis) 4/22/95
Crataegus sp. (hawthorn)
Cystopteris fragilis (fragile fern)
Dactylis glomerata (orchard grass)
Daucus carota (Queen Anne's lace)
Dennstaedtia punctilobula (hay-scented fern)
Cardamine laciniata (cut-leaved toothwort) 4/22/95
Dianthus armeria (Deptford pink) 6/19/99 7/18/98
Dicentra cucullaria (Dutchman's-breeches) 4/18/95 4/22/95 4/24/95
Dipsacus sylvestris (teasel)
Dryopteris marginalis (marginal wood fern)
Dryopteris noveboracensis (New York fern)
Duchesnea indica (Indian strawberry) 5/25/96
Elymus hystrix (bottlebrush grass)
Epipactis helleborine (helleborine orchid)
Equisetum arvense (common horsetail)
Eragrostis spectabilis (purple lovegrass)
Erigeron annuus (daisy fleabane) 6/19/99
Erigeron strigosus (lesser daisy fleabane) 6/19/99
Erythronium americanum (trout lily) 4/18/95 4/22/95 4/24/95
Euonymus alatus (winged euonymus) 5/15/95 5/25/96
Eupatorium perfoliatum (boneset)
Eupatorium rugosum (white snakeroot) 10/11/97
Eupatorium sessilifolium (upland boneset)
Eupatorium verticillatum (upland boneset) 7/18/98
Euphorbia cyparissias (cypress spurge)
Fagus grandifolia (American beech)
Festuca elatior (meadow fescue)
Fragaria vesca (wood strawberry)
Fragaria virginiana (common strawberry) 4/18/95
Fraxinus americana (white ash) 4/22/95
Galium aparine (cleavers) 5/15/95
Galium boreale (northern bedstraw)
Geranium maculatum (wild geranium) 5/15/95 5/25/96
Geranium robertianum (herb robert) 5/15/95 5/25/96 6/19/99 7/18/98 10/11/97
Geum canadense (white avens) 7/18/98
Glechoma hederacea (gill over the ground)
Gleditsia triacanthos (honey locust)
Gnaphalium obtusifolium (fragrant cudweed) 10/11/97
Hamamelis virginiana (witch hazel)
Hedeoma pulegioides (American pennyroyal)
Helianthus divaricatus (woodland sunflower)
Hemerocallis fulva (daylily)
Hepatica americana (round-lobed hepatica)
Hesperis matronalis (dame's rocket)
Heuchera americana? (alumroot)
Hieracium caespitosum (yellow king-devil hawkweed) 5/25/96
Hieracium pilosella (mouse-ear hawkweed) 5/25/96
Holcus lanatus (velvet grass)
Humulus japonicus (Japanese hops)
Hypericum perforatum (common St. Johnswort) 6/19/99
Hypochoeris radicata (cat's ear) 10/11/97
Hypoxis hirsuta (yellow stargrass) 5/25/96
Impatiens capensis (jewelweed)
Juncus tenuis (path rush)
Juniperus virginiana (red cedar)
Krigia virginica (dwarf dandelion) 4/22/95 5/25/96 6/19/99
Lepidium virginica (poor man's pepper) 6/19/99
Lespedeza violacea (?) (bush clover)
Ligustrum sinensis (Chinese privet) 6/19/99
Linaria vulgaris (butter and eggs) 6/19/99 7/18/98 10/11/97
Lindera benzoin (spicebush) 4/18/95
Liriodendron tulipifera (tulip tree)
Lonicera fragrantissima (winter honeysuckle)
Lonicera japonica (Japanese honeysuckle) 6/19/99 10/11/97
Lonicera morrowii (Morrow's honeysuckle) 5/15/95
Lonicera tatarica (Tatarian honeysuckle) 4/24/95 5/15/95
Lotus corniculatus (birdfoot trefoil) 5/25/96 6/19/99 7/18/98
Luzula multiflora (wood rush)
Lysimachia quadrifolia (whorled loosestrife)
Lythrum salicaria (purple loosestrife) 7/18/98
Melilotus alba (white sweet clover) 7/18/98
Menispermum canadense (moonseed)
Muhlenbergia sobolifera (muhly grass)
Myosotis scorpioides (larger forget-me-not) 5/25/96
Nepeta cataria (catnip)
Nyssa sylvatica (tupelo)
Onoclea sensibilis (sensitive fern)
Opuntia humifusa (prickly pear) 6/19/99 7/18/98
Ornithogalum umbellatum (star of Bethlehem)
Osmorhiza claytonia (sweet cicely)
Osmunda cinnamomea (cinnamon fern)
Osmunda claytoniana (interrupted fern)
Oxalis stricta (yellow wood sorrel) 5/15/95 5/25/96 6/19/99
Panax trifolium (dwarf ginseng)
Panicum clandestinum (deer-tongue grass)
Panicum sp. (panic grass)
Panicum virgatum (switch grass)
Paronychia canadensis (forked chickweed)
Parthenocissus quinquefolia (Virginia creeper)
Paulownia tomentosa (princess-tree) 5/25/96
Phlox sp. (phlox) 5/15/95
Phragmites australis (giant reed grass)
Pilea pumila (clearweed)
Plantago lanceolata (English plantain) 5/25/96
Plantago major (common plantain)
Plantago rugellii (pale plantain)
Poa annua (annual bluegrass)
Poa compressa (Canada bluegrass)
Poa pratensis Kentucky bluegrass
Polygonatum biflorum (true Solomon's seal)
Polygonatum pubescens (hairy Solomon's seal) 5/25/96
Polygonatum commutatum (giant Solomon's seal)
Polygonum aviculare (knotweed)
Polygonum cespitosum (cespitose knotweed) 6/19/99 7/18/98 10/11/97
Polygonum cuspidatum (Japanese knotweed)
Polygonum tenue (slender knotweed)
Polygonum scandens (climbing false buckwheat)
Polygonum virginianum (Virginia knotweed) 7/18/98
Polypodium virginianum (common polypody)
Polystichum acrostichoides (Christmas fern)
Populus deltoides (cottonwood)
Potentilla argentea (silvery cinquefoil) 5/25/96
Potentilla norvegica (rough cinquefoil) 7/18/98
Potentilla recta (rough-fruited cinquefoil)
Potentilla simplex (common cinquefoil)
Prenanthes spp. (lettuces)
Prunella vulgaris (self-heal) 7/18/98
Prunus persica (peach) 4/22/95 4/24/95
Prunus serotina (black cherry) 5/15/95 5/25/96
Prunus spinosa (blackthorn)
Pteridium aquilinum (bracken fern)
Pycnanthemum clinopodioides (basal leaved mountain mint) 7/18/98
Pycnanthemum tenuifolium (narrow leaved mountain mint) 7/18/98
Pycnanthemum verticillatum (whorled mountain mint) 7/18/98
Pycnanthemum virginianum (Virginia mountain mint)
Pyrus sp. (crab apple)
Quercus alba (white oak)
Quercus palustris (pin oak)
Quercus prinus (chestnut oak)
Quercus rubra (red oak)
Quercus velutina (black oak)
Ranunculus abortivus (kidney-leaf buttercup) 4/18/95 4/22/95 4/24/95 5/25/96
Ranunculus bulbosus (bulbous buttercup) 4/22/95 5/25/96
Ranunculus recurvatus (hooked crowfoot) 5/25/96
Rhus glabra (winged sumac)
Rhus typhina (staghorn sumac)
Robinia pseudoacacia (black locust) 5/25/96
Rosa carolina (Carolina rose) 6/19/99
Rosa multiflora (multiflora rose)
Rubus occidentalis (black raspberry)
Rubus odoratus (purple-flowering raspberry)
Rubus phoenicolasius (wineberry)
Rubus sp. (blackberry) 5/15/95 5/25/96
Rumex acetosella (field sorrel)
Rumex crispus (curled dock)
Rumex obtusifolius (broad-leaved dock)
Salix sp. (willow)
Sambucus canadensis (common elderberry) in fruit 6/19/99
Sambucus racemosa (red elderberry) 4/22/95
Sanguinaria canadensis (bloodroot) 4/22/95 4/24/95
Saponaria officinalis (bouncing bet)
Sassafrass albidum (sassafras) 4/24/95
Saxifraga pensylvanica? (swamp saxifrage)
Saxifraga virginiensis (early saxifrage) 4/22/95 5/25/96
Schizachyrium scoparium (little blue stem grass)
Sedum sp. (sedum)
Senecio vulgaris (common groundsel) 4/29/95 5/15/95
Setaria faberi (nodding foxtail grass)
Setaria glauca (yellow foxtail grass)
Setaria viridis (green foxtail grass)
Silene latifolia (white campion) 5/25/96
Silene stellata (starry campion)
Smilacina racemosa (Solomon's plume) 5/25/96
Smilax glauca (sawbrier)
Smilax herbacea (carrion flower greenbrier)
Smilax rotundifolia (round-leaved greenbrier)
Solanum dulcamara (bittersweet nightshade) 7/18/98
Solidago arguta (sharp-leaved goldenrod)
Solidago bicolor (silverrod) 10/11/97
Solidago caesia (bluestem goldenrod) 10/11/97
Solidago flexicaulis (zigzag goldenrod) 10/11/97
Solidago nemoralis (goldenrod) 10/11/97
Sonchus asper (spiny-leaved sow thistle)
Sorghastrum nutans (Indian grass)
Staphylea trifolia (bladdernut)
Stellaria media (common chickweed) 4/18/95
Symplocarpus foetidus (skunk cabbage)
Taraxacum officinale (dandelion) 4/24/95 5/25/96 10/11/97
Taxus canadensis (American yew)
Thalictrum dioicum (early meadow rue)
Thalictrum pubescens (tall meadow rue)
Thaspium trifoliatum (meadow parsnip) 5/15/95 5/25/96
Tilia americana (American basswood)
Toxicodendron radicans (poison ivy)
Tragopogon dubius fistulous (yellow goat's beard) 5/25/96
Tridens flavus (purple top grass)
Trifolium campestre (low hop clover) 5/25/96
Trifoium pratense (red clover)
Trifolium repens (white clover)
Trillium erectum (wake-robin) 4/22/95 4/24/95 5/25/96 to fruit
Triodanis perfoliata (Venus's looking glass) 6/19/99
Tussilago farfara (coltsfoot) 4/24/95
Typha angustifolia (cattail)
Ulmus americana (American elm)
Ulmus rubra (slippery elm)
Uvularia grandiflora (large flowered bellwort)
Uvularia perfoliata (perfoliate bellwort)
Vaccinium pallidum (hillside blueberry)
Vaccinium stamineum (deerberry) 5/25/96
Veratrum viride (white hellebore)
Verbascum blattaria (moth mullein)
Verbascum thapsus (common mullein)
Veronica arvensis (cornwall speedwell) 4/22/95 5/25/96
Veronica serpyllifolia (thyme-leaved speedwell)
Viburnum acerifolium (maple-leaf viburnum)
Viburnum dentatum var. lucidum (arrowwood viburnum)
Viburnum prunifolium (blackhaw viburnum) 5/15/95 5/25/96
Viburnum rafinesquianum (downy arrowwood viburnum) 5/25/96
Vinca minor (periwinkle)
Vincetoxicum nigrum (black swallowwort) 5/25/96 6/19/99 7/18/98
Viola cucullata (marsh blue violet)
Viola palmata (early blue violet)
Viola pubescens var. eriocarpa (smooth yellow violet) 4/18/95 4/22/95 4/25/92
Viola soraria (northern blue violet) 4/18/95
Viola sororia v. papilionacea (common blue violet)
Vitis aestivalis (summer grape) 6/19/99
Woodsia ilvensis (rusty woodsia)
Yucca filamentosa (Spanish bayonet) 7/18/98


HISTORICAL TRIPS:

November 3, 1929

Four members of the club, undaunted by a day of frequent heavy gusts of rain, made the excursion form Congers to Nyack, along the shore of the Hudson, on Sunday, November 3. The route between the lower landing of Hook Mountain section of the Palisades Interstate Park, under the beetling Verdreitege Hook, to North Nyack, was over great masses of trap talus, some original and unaltered by man, some left when the quarries were abandoned ten years ago.
Only a few plants remained in bloom
Helianthus decapetalus
Aster ericoides
Eupatorium ageratoides
Geranium robertianum -- which has about the longest blooming season of any plant
Interesting species new to some of the party were the bladdernut, Staphylea, in great banks with thousands of the conspicuous three lobed bladdery fruits: Triosteum, the wild coffee, or tinker's weed, with plentiful orange fruit which some of the party gathered to take home to try out as a beverage; and Paulownia, which as established itself at the foot of the cliffs, as it has along the Palisades. Signs were seen of the American Wood Rat, which still persists in holes in the talus, the only locality where it is still found within 30 miles of New York City, so far as I know. Striking exposures of the red sandstone underlying the trap cliffs were seen, including some partings of the strata with ripple marks and what appeared to be casts of marine worm burrows.
Raymond H. Torrey


April 23, 1977. P. 282
Abraham and Mildred Penzer.


April 24, 1982 p. 400
Abe and Mildre Penzer


HOOK MOUNTAIN, ROCKLAND COUNTY, NY. JUNE 20, 1999.

On a warm, sunny day a joint group from Green Brook Sanctuary and the Torrey Botanical Society explored the trail up to the summit of Hook Mountain and the next summit north. At the parking lot Catalpa speciosa (northern catalpa) was in bloom.

On the way to the summit the group found in bloom Circaea lutetiana (enchanter's nightshade), Geranium robertianum (herb robert), Ligustrum sinensis (Chinese privet), Linaria vulgaris (butter and eggs), Rosa carolina (Carolina rose), and Vitis aestivalis (summer grape). Not in bloom were Lespedeza violacea (violet bush clover), Paronychia canadensis (forked chickweed), and Pycnanthemum clinopodioides (mountain mint).

In bloom at the summit of Hook Mountain were scores of Opuntia humifusa (prickly pear cactus) along with Krigia virginica (dwarf dandelion) and Vincetoxicum nigrum (black swallowwort).

On the next summit north the group found Asclepias verticillata (whorled milkweed) in flower bud and A. viridiflora (green milkweed).

Other plants in bloom included Achillea millefolium (yarrow), Alliaria petiolata (garlic mustard), Cichorium intybus (chicory), Dianthus armeria (Deptford pink), Erigeron annuus (daisy fleabane) and E. strigosus (lesser daisy fleabane), Lepidium virginicum (poor man's pepper), Lonicera japonica (Japanese honeysuckle), Lotus corniculatus (birdfoot trefoil), Polygonum cespitosum (cespitose knotweed), and Triodanis perfoliata (Venus looking glass).

Total attendance was 16. The trip leader was Nancy Slowik.