Hiker's Guide to the Trees, Shrubs,
and Woody Vines of Ricketts Glen State Park
Third Edition -- Internet Version
| Introduction | References | Leaf Types | Leaf Arrangements | Leaf Edges | Identification Key | Descriptions | Species List |
| Vines | Ground Covers | Trees with Needle-Leaves | Trees and Shrubs with Opposite and Simple Leaves | Trees and Shrubs with Opposite and Compound Leaves | Trees and Shrubs with Alternate and Compound Leaves | Trees and Shrubs with Alternate and Simple Leaves |
TREES AND SHRUBS WITH OPPOSITE (OR WHORLED) AND COMPOUND LEAVES
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Ash (Includes White Ash, Fraxinus
americana); and Green Ash = Red Ash, F. pensylvanica)
These two
species are very similar, and they may hybridize. Experts use leaf scars and
small differences in leaves and fruits to distinguish them. For convenience,
we will lump these two species together. Height to 80 ft, sometimes taller.
Leaves 8 - 12 in; with 5 - 9 leaflets; the only large trees in the Park with
opposite and compound leaves (binoculars are helpful!). Leaflets may show
ellipsoid galls called Ash Bullet Galls, caused by the midge Campylomyza
pellax. Buds brown; with clasping scales. Bark split into tight
fissures; outer bark of older trees becomes soft and corky (use fingernail).
Found throughout the Park. |
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Red Elderberry (Sambucus pubens)
Height to 13
ft. Leaves 4 - 11 in; with 5 - 7 leaflets; petioles and base of leaflets
purplish. Branches with large lenticels (wart-like openings through which
gases are exchanged); and extensive pith; pith on younger stems white, but
brownish on older stems. Fruits red, in cone-shaped clusters. Similar in
form to common elderberry (S. canadensis), but common elderberry
produces flat-topped clusters of dark purple fruits, and inhabits more open
areas. Common Elderberry was sighted on the State Gamelands (eastern) side
of Mt. Springs Lake Road). Red Elderberry is a true woodland species, and
found mostly along the Falls Trail, especially just below Waters Meet, and
on the Evergreen Trail.
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Wild Sarsaparilla (Aralia nudicaulis)
Height to 2
ft. Leaves 2 - 7 in; arranged in a whorl of three from a common node near
the ground. Flowers in ball-shaped clusters (inflorescences called umbels),
three of which are attached at a single node on a stem separate from the
stem bearing the leaves. Although this plant is woody at and just below the
soil line, it is not a true shrub. It is included here because the petioles
are so erect that the plant appears shrub-like. Common along the lower
portions of the Falls Trail, the lower portion of the Old Bulldozer Road
Trail, and around the picnic area on the north side of Rt. 118. |
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Updated 10 July 2005.