Pennsylvania Rucker Index Site Comparisons (2/6/04)
(Average of 10 Tallest Species within a Site)
(Bold denotes record status)
Eastern Native Tree Society (ENTS) members involved in measuring the following trees:
Dale Luthringer, Environmental Education Specialist, Cook Forest State Park
Will Blozan, President and Co-founder, ENTS
Robert Leverett, Co-founder, ENTS and Co-founder/Executive Director, Friends of Mohawk Trail State Forest (FMTSF)
Dr. Robert Van Pelt, Forest Ecologist, University of Washington
Colby Rucker, Retired, State of Maryland
Dr. Tom Diggins, Professor, Youngstown State University
Jack Sobon, Architect and Timber Framer
Ron Busch, Arborist North Carolina
Cook Forest State Park
Species	CBH	Height	Rucker Index	Status
E. white pine	11.1	181.3	135.27	tied 3rd tallest tree in E. U.S.
E. hemlock	11.8	145.3		tied tallest NE
black cherry	11.4	140		2nd tallest E. U.S.
tuliptree	8.2	136.6
white ash	7.6	128.3
red maple	9	126
white oak	10.6	124.8		tallest NE U.S
Am. Beech	7.9	124.4		tallest PA
cucumbertree	7.5	123.1		tied tallest NE
N. red oak	9.5	122.9
Wintergreen Gorge, PSU Behrend Campus
Species	CBH	Height	Rucker Index	Status
tuliptree	9.5	145.4	127.89
red maple	7.8	136.6		tallest NE U.S.
white ash	9.9	129.8
sycamore	7.7	129.7
E. hemlock	8.2	124.2
slippery elm	8.8	123.7		tallest NE U.S.
sugar maple	5.7	123.4		tallest PA
cucumbertree	8.6	123.1		tallest NE U.S.
Am. Basswood	9	121.7		tallest PA
black cherry	8.8	121.3
Fairmont Park, Philadelphia, PA
Specie	CBH	Height	Rucker Index	Status
tuliptree	10.9	158.6	127.72	tallest NE. U.S.
sycamore	11.4	139		tallest PA
white ash	7.3	135.7		tallest PA
N. red oak	9.7	135.2		tallest NE. U.S.
bitternut hickory	6.7	134.2		tallest PA
black walnut	5.4	121.1		tallest PA
Am. Beech	6.8	118
black oak	9.6	116.7		tallest PA
sweet cherry	5.7	113.5		tallest PA
E. hemlock	10.6	106.2
Walnut Creek Gorge, Fairview, PA
Specie	CBH	Height	Rucker Index	Status
tuliptree	9.5	135.5	120.6
sycamore	15.3	133.8
white ash	8.2	124.2
Am. Beech	15.7	119.3
sugar maple	9.6	118.8
UI tree	6.6	117.8
black locust	7.6	116.5
bitternut hickory	6.4	115
shagbark hickory	6.3	112.8
E. hemlock	N/A	112.3
Rickett Glen S.P. (includes The Glens N.A. & Boston Run N.A.)
Specie	CBH	Height	Rucker Index	Status
white pine	10.4	144.6	119.85
tuliptree	8.8	138.2
E. hemlock	11.8	128.9
white ash	8.7	127.6
cucumbertree	5.4	115.8
sugar maple	11	113.5
red maple	7.6	110.6+
N. red oak	9.3	106.8
Am. Basswood	5.4	106.6+
shagbark hickory	5.1	105.9
Ander's Run Natural Area
Specie	CBH	Height	Rucker Index	Status
E. white pine	12.9	163.8	118.65
E. hemlock	7.5	125.4
black cherry	6.6	121.8
Am. Basswood	8.1	120.7
white ash	7.2	116.9
red maple	4.4	116
shagbark hickory	5.3	111
white oak	6.9	105.7
N. red oak	5.8	104.8
Am. Beech	4.3	100.4
Heart's Content Natural Area
Species	CBH	Height	Rucker Index	Status
white pine	9.9	162	113.79
E. hemlock	9.4	127.8
red maple	6.8	119
cucumbertree	8.8	114.1
Am. Beech	6.2	109.8
white oak	7.8	108.4
black cherry	4.6	106.4
N. red oak	11.1	98.6
chestnut oak	7.5	97.6
black birch	5.7	94.2
Alan Seeger Natural Area
Species	CBH	Height	Rucker Index	Status
tuliptree	8.9	137.7	111.13
white pine	8.6	137.6
E. hemlock	11.2	118.2
white ash	5.7	111.1
N. red oak	8.8	108.1+
white oak	6.9	108.1+
red maple	5.8	105.1+
cucumbertree	5.2	102.2
chestnut oak	8	96.1+
black gum	6.6	87.1+
Coho Property (Eagle's Nest), North Springfield, PA
Species	CBH	Height	Rucker Index	Status
tuliptree	8.4	140.3	109.59
N. red oak	9.7	123.4
white ash	7.4	120.5
E. hemlock	6.2	106.5
sugar maple	N/A	104.6
butternut	5.7	104.6		tallest PA
Am. Beech	9.1	101.5
cottonwood	7.8	99.7
sassafrass	5.1	98.4		tallest NE US
sycamore	14.7	96.4
Tionesta Scenic Area
Species	CBH	Height	Rucker Index	Status
E. hemlock	12.4	134.6	109.36
black cherry	16.1	121.5
tuliptree	7.6	119+
red maple	8.6	113.9
Am. Beech	6.9	108.9
white ash	9	107.2
sugar maple	6	106.5
yellow birch	9	99.1+
black birch	5.3	92.9
cucumbertree	4.5	90+
Glenwood Park  (Erie, PA urban old growth?)
Specie	CBH	Height	Rucker Index	Status
tuliptree	10.1	113.9	98.08
sugar maple	N/A	110.3
shagbark hickory	9.5	106.3
white oak	12.7	104.5
red maple	9	100.1
black cherry	7	99.1+
Am. beech	N/A	95
N. red oak	11.6	90.8
Am. basswood	7.5	90.1+
E. hophornbeam	3.4	70.7
		980.8
Parker Dam S.P. (Penfield, PA)
Specie	CBH	Height	Rucker Index	Status
white ash	7.6	114.8	85.57
N. red oak	N/A	114.1
cucumbertree	N/A	114
tuliptree	7.3	113.3
Am. Basswood	6.8	108.1+
sugar maple	9.1	107.1
shagbark hickory	4.6	104.2
white oak	N/A	89.2
E. hophornbeam	3.3	63.6
Hercules club	1.5	35.4