USGS

The Big Trees of Patuxent Research Refuge

Patuxent Home

PINACEAE (Pine Family)
    Picea pungens - blue spruce (diam. 30") - Superintendent's House
    Picea abies - Norway spruce (diam. 31") - Bluegill Pond
                                                   (diam. 31") - Uhler Marsh Meadow Near Cedar       
    Tsuga canadensis - Eastern hemlock (diam 6") - Bluegill Creek (Plot 4473)
    Pinus strobus - white pine (diam. 42"} - North Tract Loop Road Cemetery
                                              (diam. 31") - Harding Spring Woods - dead from lightning in 1990s
                                              (diam. 31”) – AA County near beaver pond on Mill Race Road
                                              (diam. 31”) – Shaefer Farm
    Pinus taeda - loblolly pine (diam. 28") - Visitor Center Exit Road
                                               (diam. 26”) – Visitor Center Exit Road
                                               (diam. 25") - Snowden Hall Meadow
    Pinus rigida - pitch pine (diam. 30") - Cash Lake Trail (State Record)
    Pinus virginiana - Virginia pine (diam. 32") - Snowden Hall Meadow
                                                        (diam. 23”) – PEPCO ROW woods near church
                                                        (diam. 22") - Snowden Pond Woods (Plot 2587)
    Pinus echinata - shortleaf pine (diam. 16") - Visitor Center Exit Road
    Pseudotsuga menziesii - Douglas fir (diam. 14") - Snowden Hall

TAXODIACEAE
    Taxodium distichum - bald cypress (diam. 5") - Harding Spring Pond

CUPRESSACEAE
    Thuja occidentalis – Northern white cedar (diam. 11”) – Shaefer Farm
    Juniperus virginiana - red cedar (diam. 46") - Uhler Marsh Meadow
                                                        (diam. 27") - Crane Caretaker House

MAGNOLIACEAE (Magnolia Family)
    Magnolia virginiana - sweetbay magnolia (diam. 9") - Snowden Hall Woods
    Magnolia grandiflora - southern magnolia (diam. 27") - Entrance Road
    Liriodendron tulipifera - tulip tree (diam. 72") - Beech Island (died in 1986)
                                                           (diam. 66") - Millrace Rd. Is. - Plot 2730
                                                           (diam. 59") - Beech Island

ANNONACEAE (Custard-apple Family)
    Asimina triloba - pawpaw (diam. 5") - Duvall Bridge Woods

LAURACEAE (Laurel Family)
    Sassafras albidum - sassafras (diam. 19") - Snowden Pond Woods

PLATANACEAE (Plane Tree Family)
    Platanus occidentalis - sycamore (diam. 73") - Little Patuxent River bank

HAMAMELIDACEAE (Witch Hazel Family)
    Liquidambar styraciflua - sweetgum (diam. 46") - Beech Island
                                                               (diam 44") - Near Excl. #5

ULMACEAE (Elm Family)
    Ulmus americana - American elm (diam. 43") - Garden Woods
    Celtis occidentalis - northern hackberry (diam. 19") - Visitor Center Entrance Road

MORACEAE (Mulberry Family)
    Maclura pomifera - osage orange (diam. 12") - Stickel Lab.
                                                          (diam. 17") - Crane Caretaker House (??)
    Broussonetia papyrifera - Paper mulberry (diam.    )  - Birmingham Manor Site
    Morus rubra - red mulberry
    Morus alba - white mulberry (diam. 29") - Gabrielson Lab. (2005 split and fell over sidewalk)

JUGLANDACEAE (Walnut Family)
    Juglans cinerea - butternut (diam. 25") - Duvall Bridge Rd. Gate
    Juglans nigra - black walnut (diam. 41") - Cedar Lane House
    Carya illinoiensis - pecan (diam. 50") - Nelson Lab
    Carya cordiformis - bitternut hickory (in old plant list; none found recently)
    Carya pallida - sand hickory (diam. 5”) – North Tract Airport area
    Carya tomentosa - mockernut hickory (diam. 22") - Snowden Pond Rd. near ROW (Plot 3581)
    Carya ovata - shagbark hickory (diam. 11") - Stickel Lab
    Carya ovalis - sweet pignut hickory (in old plant list; none found recently)
    Carya glabra - pignut hickory (diam. 34") - Beech Island (State Record)
                                                     (diam. 27") - River Road near Pin Oak

FAGACEAE (Beech Family)
    Fagus grandifolia - American beech (diam. 54") - Beech Island
    Castanea dentata - American chestnut (diam. 5") - Entrance Road (dead @ 2000)
    Castanea mollissima - Chinese chestnut (diam. 20")
    Quercus alba - white oak (diam 63") - Patuxent River - Plot 2712
    Quercus stellata - post oak (diam. 38") - Log Cabin
    Quercus lyrata - overcup oak (diam. 60") - U.S. Record in 1946 (died in 1972)
                                                   (diam. 39") - River Road Woods - Plot 3656
    Quercus bicolor - swamp white oak (diam. 45") Patuxent River Swamp
    Quercus michauxii - swamp chestnut oak (diam. 51") - Patuxent River - Plot 3712
    Quercus prinus - chestnut oak (diam. 22") – PEPCO ROW woods near church
    Quercus phellos - willow oak (diam. 61") - Farm Pond - Bad Crown
                                                    (diam 47”) - Snowden Hall Snake Tree (dead in 1988)
                                                    (diam. 45") - Gabrielson Lab Gazebo Area
    Quercus marilandica - black-jack oak (diam 16") BGE ROW
    Quercus ilicifolia - bear (scrub) oak
    Quercus falcata - southern red oak (diam. 36") - Snowden Woods
    Quercus velutina - black oak (diam. 48") - Apartment Woods
    Quercus rubra - northern red oak (diam. 61") - Patuxent River (Blew Down in
                                                                             Hurricane Isabel Sept 18, 2003)
    Quercus palustris - pin oak (diam. 46") - River Road Woods near Green Ash
                                                (diam. 38") - Patuxent River - Plot 3676
    Quercus coccinea - scarlet oak (diam. 35”) – PEPCO ROW woods near church (3 stems)
                                                      (diam. 32") - Snowden Pond Woods near ROW
   
BETULACEAE (Birch Family)
    Carpinus caroliniana - hornbeam (diam. 20") - River Road
    Betula nigra - river birch (diam. 44") - U. S. Record in 1960s (can't find; presumed dead)
                                             (diam. 32") - Cash Branch - Near Farm Pond - Plot 5413
                                             (diam. 32") - Near Beech Is. - A.A. County
    Betula papyrifera - white birch - power lines (can't find; presumed dead)

SALICACEAE
    Populus alba - white poplar
    Populus grandidentata - big-toothed aspen (diam. 21") - Visitor Center
    Populus tremuloides - quaking aspen
    Salix nigra - black willow - (diam. 21") - Uhler Marsh 2 (top rotted out)
                                                (diam. 18") - Crane Chick Bldg. Well area (dead in 2006).
   
EBENACEAE (Ebony Family)
    Diospyros virginiana - persimmon (diam. 25") - Log Cabin

ROSACEAE (Rose Family)
    Pyrus communis – Pear (in old plant list; none found recently)
    Pyrus calleryama – Bradford pear (diam. 20”) – Visitor Center
    Malus angustifolia – Southern crabapple (diam. 24” in 1992) - Snowden Hall (died late 1990s)
    Prunus serotina - black cherry (diam. 42") - Cedar Lane - Cut by PRR Facilities late 1990s
                                                      (diam. 34") - Gabrielson Lab. near Gazebo
                                                      (diam. 31") - Cedar Lane House
    Prunus pensylvanica - pin cherry (in old plant list; none found recently)
    Prunus avium - sweet cherry (diam. 34") - Butler Bldg. – died in late 1990s
    Prunus americana - American plum (in old plant list; none found recently)
    Prunus serrulata Kwanzan - Japanese cherry (diam. 32") - Stickel House

FABACEAE (Pea Family)
    Robinia pseudoacacia - black locust  (diam35") - Crane Caretaker House
                                                                (diam. 33") - Cedar Lane House
    Gleditsia triacanthos inermis - thornless honey locust (diam. 28") - Merriam Lab
    Cercis canadensis - Eastern redbud (diam. 13"; diam. 44" at base) – Director’s House
                                                              (diam. 10 ") - Stickel Lab.
    Sophora japonica - pagoda tree (diam. 36") - Snowden Hall
   

CORNACEAE (Dogwood Family)
    Cornus florida - flowering dogwood (diam. 15") - Crane Caretaker House
    Nyssa sylvatica - black gum (diam. 28") - Snowden Woods

SIMAROUBACEAE
    Ailanthus altissima - ailanthus - (diam. 13") - Crane Pens

AQUIFOLIACEAE (Holly Family)
    Ilex opaca - holly (diam. 33") - Crane Caretaker House
                                (diam. 22") - Crane Caretaker House

HIPPOCASTANACEAE (Horse Chestnut Family)
    Aesculus hippocastanum - horse chestnut (diam. 37") - Snowden Hall

ACERACEAE (Maple Family)
    Acer platanoides - Norway maple (diam. 34") - Snowden Hall
    Acer p. schwedleri – Schwedler’s maple (diam. 37”) - Crane Caretaker House
    Acer pseudoplatanus - sycamore maple (diam. 12") - Cedar Lane (top broken @ 2002)
    Acer rubrum - red maple (diam. 51") - near Beech Is. - A.A. County
                                            (diam. 48") - Cash Branch near Farm Pond - Plot 5413
    Acer saccharinum - silver maple - (diam. 60”) - Cedar Lane House
                                                           (diam. 45") - Millrace Rd. Island - Plot 2731
                                                           (diam. 44") - Snowden Lawn
    Acer negundo - box-elder (diam. 32") - Millrace Rd. Island - Plot 2731
    Acer palmatum - Japanese maple (diam. 13") - Nelson Lab
 
OLEACEAE (Olive Family)
    Fraxinus americana - white ash (diam. 60") – MD Record in 1960s. Now presumed dead. 
    Fraxinus pennsylvanica - green ash (diam. 45") - River Road near sign 
                                                             (diam. 43") - Beech Island
                                                             (diam. 39") - Beech Island

BIGNONIACEAE (Trumpet Creeper Family)
    Catalpa speciosa - Northern catalpa (diam. 54") - Crane Caretaker House
    Paulonia tomentosa - Royal Paulonia (diam. 9") - Near Meter Square Pens

CAPRIFOLIACEAE
    Viburnum prunifolium - black haw

Last updated 6/2/2006


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