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Viburnum leaf
beetle home
Guide to identifying Viburnums
Common
names
Is
it a viburnum?
Which viburnum?
Express key
ID
tutorial
Guide to viburnums by David Swaciak.
Leaf drawings by
Marcia Eames-Sheavly.
Logo
images by Paul Weston & Craig Cramer
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This Express Key will lead you through the same identification process on a single page that you can follow page-by-page from the Guide to Identifying Viburnums page. While this page is more streamlined and might be a little bit faster for experienced users, it doesn't have pictures to help you along the way. (You can click on links in this key and go to the detailed pages that do have pictures.)
If you want a hard copy to take to the field with you, download the printer-friendly .pdf
version.
- I know the common name of my viburnum.
I want to know the scientific name.
Go to Common Names.
- I'm not sure if my plant is a viburnum.
Go to Is it a viburnum?
- I know my plant is a viburnum.
I want to figure out what species it is.
Go to Which viburnum is it?
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Is
it a viburnum?
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1A1.
If the plant is a vine (low and trailing along the ground),
you do not have a viburnum.
1A2.
If the plant is a shrub (has many stems) or small tree, about 3 to 12 feet
tall, go to 2A. View
detail page
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2A1.
If the leaves alternate on the twig, you do not have a viburnum.
2A2.
If the leaves are opposite each other on the twig, go to 3A.
View
detail page
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3A1.
If the leaf is compound (three or more leaflets), it is not
a viburnum.
3A2. If the leaf is simple (one main part), go to 4. View
detail page
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4A1
. If the leaf is lobed (divided into three or more
segments, resembling a maple leaf), go to 5A.
4A2. If the leaf is not lobed (not divided into segments)
go to 5B. View
detail page
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5A1.
If the petioles
(leaf stems) are without stipules (fang-like appendages at
the base) it is not a viburnum.
5A2.
If the petiole
has
stipules,
you have a viburnum. Go to Which viburnum is
it?
View
detail page
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5B1.
If the twigs have corky ridges you do not have a viburnum.
5B2.
If the twigs do not have corky ridges go to 6A. View
detail page
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Make
a long tapered cut in the twig.
6A1. If the inside of the stem is hollow or chambered,
you do not have a viburnum.
6A2. If the inside of the stem is solid go to 7A. View
detail page
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Look at the twig between the petioles (leaf stems) - best
seen on newest growth.
7A1. If the
base of the petioles are not connected
by a line, you do not have a viburnum.
7A2. If the base of the petioles are connected by a
line, go to 8A.View
detail page
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Look for last years fruit or dried flower/seed heads.
8A1. If the fruiting structure is a dry flower or capsule,
you do not have a viburnum.
8A2. If the fruiting structure is a red, blue or black
berry (some yellow), go to 9A.View
detail page
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9A1. If the
leaf margin is entire (smooth) and
the under side is
glabrous (smooth) you do not have a viburnum.
9A2. If the
leaf margin has teeth or if the margin is entire
and
the underside is pubescent (velvety tufts under magnification),
go to Which viburnum is it? View
detail page
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Which
viburnum is it?
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1A1. If your leaf is lobed (divided into segments)
go to 2A.
1A2. If your leaf is orbicular (rounded) or ovate to
broad ovate (like an egg or fat egg shape), go to 2B.
1A3. If your leaf is elliptic
(football) or oblong-ovate (long and narrow shaped), go to 2C.
View
detail page
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2A1. If the underside of the leaf has black dots (under
magnification), go to Viburnum acerifolium.
2A2. If there are glands (bumps) on the petiole (leaf
stalk) and pubescence (under magnification) along the veins
on the underside of the leaf, go to Viburnum opulus.
2A3. If there are glands on the petiole and the veins
on the underside of the leaf are without hairs go to Viburnum
sargentii.
View
detail page
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2B1.
If the teeth on the leaf margin are closely spaced, 10 or
more teeth within the width of a dime, go to 3A.
2B2.
If the teeth on the leaf margin are widely spaced, 9 or less
teeth within the width of a dime, go to 3B.
2B3.
If the leaf margin has obscure, indistinct or no teeth, go
to 3C. View
detail page
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3A1. If your leaf has dense pubescence (velvety tufts
under magnification)
on the underside of the leaf, go to Viburnum lantanoides.
3A2. If your leaf does not have dense
pubescence on the underside, go to 4A.
View
detail page
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4A1. If the petiole (leaf stem) has wavy margins,
go to Viburnum lentago.
4A2. If the petiole is without wavy margins, go
to Viburnum prunifolium.
View
detail page
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3B1. If your leaf has pubescence (velvety tufts under
magnification) on the underside of the leaf, go to 4B.
3B2. If your
leaf does not have pubescence on the underside, go to 4C.
View
detail page
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4B1 If the length of the petiole (leaf stem) is less
than the width of a dime, go to 5A.
4B2. If the length of the petiole is
greater than the width of a dime, go to 5B.
View
detail page
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5A1.
If the leaf veins extend beyond the margin, go to Viburnum
carlesii (also Viburnum x carlcephalum).
5A2. If the leaf veins do not extend beyond the
margin, go to Viburnum macrocephalum. View
detail page
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5B1.
If your leaf has less than 9 secondary leaf veins on one side
of the midrib (main central vein), go to Viburnum lantana.
5B2. If your leaf has 9 or more secondary leaf
veins on one side of the midrib, go to Viburnum plicatum
var. tomentosum. View
detail page
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4C1.
If the twigs are glabrous (smooth),
go to 5C.
4C2. If the twigs are pubescent (hairy under magnification),
go to 5D. View
detail page
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5C1.
If your leaf has brown dots (under magnification)
on the underside especially along the veins and the teeth
are rounded, go to Viburnum cassinoides.
5C2. If your leaf does not have brown dots on the underside,
go to Viburnum dentatum
5C3.
If your leaf has brown dots on the underside and teeth are
pointed, go to Viburnum wrightii View
detail page
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5D1. If your leaf does not have 2-4 circular glands
at the base of the underside, go to Viburnum dentatum
5D2. If your leaf has 2-4 circular glands at the
base of the underside, go to Viburnum dilatatum. View
detail page
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3C1. If your leaf is orbicular (more rounded), go
to Viburnum carlesii.
3C2. If your leaf has few if any teeth,
go to Viburnum x burkwoodii.
3C3. If the leaf is ovate (egg shape), go to Viburnum
x carlcephalum.
View
detail page
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2C1. If the teeth are closely spaced, 10 teeth or
more within the width of a dime, go to 3D.
2C2. If the leaf teeth are widely spaced, 9 teeth or
less within the width of a dime, go to 3E.
2C3. If
the leaf margin has obscure, indistinct or no teeth go to 3F.
View
detail page
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3D1. If the petiole (leaf stem) has wavy margins,
go to Viburnum lentago.
3D2. If the petiole is without wavy margins, go to
Viburnum prunifolium.
View
detail page
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3E1. If the underside of the leaf is pubescent (velvety
tufts under magnification),
go to 4D.
3E2. If the
underside of the leaf is not pubescent, go to 4E.
View
detail page
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4D1.
If your leaf has 9 or more secondary leaf veins on one side
of the midrib (main central vein), go to Viburnum plicatum
var. tomentosum.
4D2. If your leaf has are fewer than 9 secondary leaf
veins on one side of the midrib, go to 5E. View
detail page
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5E1.
If the petiole (leaf stem) is longer than the width of a dime,
go to Viburnum lantana.
5E2. If the petiole is shorter than the width of a
dime and the teeth are distinct, go to Viburnum macrocephalum
(also Viburnum x carlcephalum)
5E3. If the petiole is shorter than the width of a
dime and the teeth are small or irregular go to Viburnum
x juddii. View
detail page
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4E1.
If the leaf has brown dots on the underside (under
magnification),
go to 5F.
4E2. If the does not have brown dots on the underside
go to 5G View
detail page
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5F1. If the leaf has brown dots on the underside (under
magnification), mostly along the
veins, go to Viburnum cassinoides.
5F2. If the leaf leaf smells like burnt rubber when
crushed, go to Viburnum sieboldii.
View
detail page
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5G1.
If your leaf has 2-4 circular glands at the base of the underside,
go to Viburnum dilatatum.
5G2. If the leaf base is cuneate (long taper), go to
Viburnum farreri.
5G3. If the leaf base is rounded, go to Viburnum
setigerum.
5G4. If the leaf leaf smells like burnt rubber
when crushed, go to Viburnum sieboldii. View
detail page
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3F1. If the leaf is less than 3” long go to 4F.
3F2. If the
leaf is greater than 3” long go to 4G.
View
detail page
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4F1. If the twig is glabrous (smooth under magnification),
go to Viburnum cassinoides
4F2. If the top of leaf is glabrous (smooth - see
leaf surface tutorial), go to Viburnum utile.
4F3. If there are sparse teeth along the margin
and the twig is pubescent go to Viburnum x burkwoodii.
View
detail page
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4G1. If the leaf has brown dots on the underside (under
magnification), go to Viburnum
cassinoides.
4G2. If the leaves are deeply wrinkled, go to Viburnum
rhytidophyllum
4G3. If the leaves are leaf less wrinkled go to
Viburnum x rhytidophylloides.
View
detail page
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Project coordinator: Lori Brewer, ljb7@cornell.edu
Website design: Craig Cramer cdc25@cornell.edu
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