Identifying Local Elm Trees - Revision history

Watlington at 01:54, 24 December 2023

2023-12-24T01:54:41Z

← Older revision		Revision as of 01:54, 24 December 2023
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	== Chinese Elm ==		== Chinese Elm ==
			[[File:RN Ulmus parvifolia bark.JPG\|thumb\|Chinese Elm Bark]]
	The [https://gobotany.nativeplanttrust.org/species/ulmus/parvifolia/ Chinese Elm] ([[wikipedia:Ulmus_parvifolia\|Ulmus parvifolia]]) is included in this list as it has been planted by towns in the area, and may be found in yards around Acton.		The [https://gobotany.nativeplanttrust.org/species/ulmus/parvifolia/ Chinese Elm] ([[wikipedia:Ulmus_parvifolia\|Ulmus parvifolia]]) is included in this list as it has been planted by towns in the area, and may be found in yards around Acton.

Watlington: Added more photos

2023-12-24T01:43:13Z

Added more photos

← Older revision		Revision as of 01:43, 24 December 2023
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	The [https://gobotany.nativeplanttrust.org/species/ulmus/rubra/ Slippery Elm] ([[wikipedia:Ulmus_rubra\|Ulmus rubra]]) is probably the most common native Elm in Acton at this time. It is a smaller tree (usually no more than 50 ft. tall), frequently competing with birches in wet areas.		The [https://gobotany.nativeplanttrust.org/species/ulmus/rubra/ Slippery Elm] ([[wikipedia:Ulmus_rubra\|Ulmus rubra]]) is probably the most common native Elm in Acton at this time. It is a smaller tree (usually no more than 50 ft. tall), frequently competing with birches in wet areas.

	Slippery Elm is chiefly distinguished from American elm by its downy twigs, chestnut brown or reddish hairy buds, and slimy red inner bark~~. The lateral veins in a Slippery Elm leaf typically fork before reaching the edge of the leaf, versus the American Elm having lateral veins which rarely fork~~.		Slippery Elm is chiefly distinguished from American elm by its downy twigs, chestnut brown or reddish hairy buds, and slimy red inner bark.

	Slippery Elm has small hairs along the edges of the leaves (marginal cilia), which differentiates it from Scotch Elm and English Elm.		Slippery Elm has small hairs along the edges of the leaves (marginal cilia), which differentiates it from Scotch Elm and English Elm.
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	== Rock Elm ==		== Rock Elm ==
	The [https://gobotany.nativeplanttrust.org/species/ulmus/thomasii/ Rock Elm] ([[wikipedia:Ulmus_thomasii\|Ulmus thomasii]]) is a native Elm found in the midwest, into the western edge of Vermont and NH. No sightings in Massachusetts.		The [https://gobotany.nativeplanttrust.org/species/ulmus/thomasii/ Rock Elm] ([[wikipedia:Ulmus_thomasii\|Ulmus thomasii]]) is a native Elm found in the midwest, into the western edge of Vermont and NH. No sightings in Massachusetts.
			[[File:Ulmus thomasii (meisse) corky wings.jpg\|thumb\|Rock Elm twigs]]
	It has branches which are irregularly winged with 2 or more corky plates.		It has branches which are irregularly winged with 2 or more corky plates.

Watlington: Added some pictures

2023-12-23T00:35:11Z

Added some pictures

← Older revision		Revision as of 00:35, 23 December 2023
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	== Slippery Elm ==		== Slippery Elm ==
			[[File:Ulmus rubra 15-p.bot-ulmu.rubra-10.jpg\|left\|thumb\|Slippery Elm leaf and seed]]
	The [https://gobotany.nativeplanttrust.org/species/ulmus/rubra/ Slippery Elm] ([[wikipedia:Ulmus_rubra\|Ulmus rubra]]) is probably the most common native Elm in Acton at this time. It is a smaller tree (usually no more than 50 ft. tall), frequently competing with birches in wet areas.		The [https://gobotany.nativeplanttrust.org/species/ulmus/rubra/ Slippery Elm] ([[wikipedia:Ulmus_rubra\|Ulmus rubra]]) is probably the most common native Elm in Acton at this time. It is a smaller tree (usually no more than 50 ft. tall), frequently competing with birches in wet areas.

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	== Siberian Elm ==		== Siberian Elm ==
	The [https://gobotany.nativeplanttrust.org/species/ulmus/pumila/ Siberian Elm] ([[wikipedia:Ulmus_pumila\|Ulmus pumila]]) is an invasive species frequently found along road edges in Acton.		The [https://gobotany.nativeplanttrust.org/species/ulmus/pumila/ Siberian Elm] ([[wikipedia:Ulmus_pumila\|Ulmus pumila]]) is an invasive species frequently found along road edges in Acton.
			[[File:RN Ulmus pumila leaves.JPG\|thumb\|Siberian Elm leaves]]
	In general it has smaller, more evenly sized leaves, and straighter stems/branches. The definitive tell is that the leaf edges have medium-sized to coarse teeth, whereas other Elms have leaf edges with teeth, with smaller teeth on them.		In general it has smaller, more evenly sized leaves, and straighter stems/branches. The definitive tell is that the leaf edges have medium-sized to coarse teeth, whereas other Elms have leaf edges with teeth, with smaller teeth on them.

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	There has been work on identifying and breeding varieties with adequate resistance to DED. [https://www.elmpost.org/ An Acton citizen has been working since 1994] to re-introduce these resistant variants back into Acton's conservation lands. Some of these are now approaching 30 years of age and 40 ft. in height.		There has been work on identifying and breeding varieties with adequate resistance to DED. [https://www.elmpost.org/ An Acton citizen has been working since 1994] to re-introduce these resistant variants back into Acton's conservation lands. Some of these are now approaching 30 years of age and 40 ft. in height.
			[[File:Ulmus americana 15-p.bot-ulmu.amer-17.jpg\|left\|thumb\|American Elm leaf and seed]]

	== Rock Elm ==		== Rock Elm ==

Watlington at 06:25, 22 December 2023

2023-12-22T06:25:41Z

← Older revision		Revision as of 06:25, 22 December 2023
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	Elm trees all have one leaf per node (alternate), and simple leaves with toothed edges. The base of the leaf is cordate (heart-shaped), and '''asymmetric'''. (If the base is symmetric, you are probably looking at a Birch tree)		Elm trees all have one leaf per node (alternate), and simple leaves with toothed edges. The base of the leaf is cordate (heart-shaped), and '''asymmetric'''. (If the base is symmetric, you are probably looking at a Birch tree)

	The different Elms are confusingly similar. They are listed here starting with the ones most commonly found in Acton.		The [https://gobotany.nativeplanttrust.org/genus/ulmus/ different Elms] are confusingly similar. They are listed here starting with the ones most commonly found in Acton.

	== Slippery Elm ==		== Slippery Elm ==

Watlington: Added English Elm

2023-12-22T06:24:42Z

Added English Elm

← Older revision		Revision as of 06:24, 22 December 2023
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	== Slippery Elm ==		== Slippery Elm ==
	The [https://gobotany.nativeplanttrust.org/species/ulmus/rubra/ Slippery Elm] ([[wikipedia:Ulmus_rubra\|Ulmus ~~Rubra~~]]) is probably the most common native Elm in Acton at this time. It is a smaller tree (usually no more than 50 ft. tall), frequently competing with birches in wet areas.		The [https://gobotany.nativeplanttrust.org/species/ulmus/rubra/ Slippery Elm] ([[wikipedia:Ulmus_rubra\|Ulmus rubra]]) is probably the most common native Elm in Acton at this time. It is a smaller tree (usually no more than 50 ft. tall), frequently competing with birches in wet areas.

	Slippery Elm is chiefly distinguished from American elm by its downy twigs, chestnut brown or reddish hairy buds, and slimy red inner bark. The lateral veins in a Slippery Elm leaf typically fork before reaching the edge of the leaf, versus the American Elm having lateral veins which rarely fork.		Slippery Elm is chiefly distinguished from American elm by its downy twigs, chestnut brown or reddish hairy buds, and slimy red inner bark. The lateral veins in a Slippery Elm leaf typically fork before reaching the edge of the leaf, versus the American Elm having lateral veins which rarely fork.

			Slippery Elm has small hairs along the edges of the leaves (marginal cilia), which differentiates it from Scotch Elm and English Elm.

	Unfortunately, it apparently [[wikipedia:Ulmus_rubra#Hybrids\|readily hybridizes]] with the invasive Siberian Elm.		Unfortunately, it apparently [[wikipedia:Ulmus_rubra#Hybrids\|readily hybridizes]] with the invasive Siberian Elm.
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	== American Elm ==		== American Elm ==
	The [https://gobotany.nativeplanttrust.org/species/ulmus/americana/ American Elm] ([[wikipedia:Ulmus_americana\|Ulmus ~~Americana~~]]) was the largest species of Elm, commonly more than 100 ft. tall. It was largely wiped out by the introduction of the "Dutch" Elm Disease (DED), beginning in the 1930s. In 2023, there is no knowledge of old American Elms in Acton.		The [https://gobotany.nativeplanttrust.org/species/ulmus/americana/ American Elm] ([[wikipedia:Ulmus_americana\|Ulmus americana]]) was the largest species of Elm, commonly more than 100 ft. tall. It was largely wiped out by the introduction of the "Dutch" Elm Disease (DED), beginning in the 1930s. In 2023, there is no knowledge of old American Elms in Acton.

	There has been work on identifying and breeding varieties with adequate resistance to DED. [https://www.elmpost.org/ An Acton citizen has been working since 1994] to re-introduce these resistant variants back into Acton's conservation lands. Some of these are now approaching 30 years of age and 40 ft. in height.		There has been work on identifying and breeding varieties with adequate resistance to DED. [https://www.elmpost.org/ An Acton citizen has been working since 1994] to re-introduce these resistant variants back into Acton's conservation lands. Some of these are now approaching 30 years of age and 40 ft. in height.

			== Rock Elm ==
			The [https://gobotany.nativeplanttrust.org/species/ulmus/thomasii/ Rock Elm] ([[wikipedia:Ulmus_thomasii\|Ulmus thomasii]]) is a native Elm found in the midwest, into the western edge of Vermont and NH. No sightings in Massachusetts.

			It has branches which are irregularly winged with 2 or more corky plates.

	== Scotch Elm ==		== Scotch Elm ==
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	It has a very distinctive smooth peeling bark which sets it apart from the other Elm species.		It has a very distinctive smooth peeling bark which sets it apart from the other Elm species.

	== ~~Rock~~ Elm ==		== English Elm ==
	The [https://gobotany.nativeplanttrust.org/species/ulmus/~~thomasii~~/ ~~Rock~~ Elm] ([[wikipedia:~~Ulmus_thomasii~~\|Ulmus ~~thomasii~~]]) is ~~a native~~ Elm found in ~~the midwest~~, ~~into the western edge of Vermont~~ and NH. ~~No sightings~~ in ~~Massachusetts~~.		The [https://gobotany.nativeplanttrust.org/species/ulmus/procera/ English Elm] ([[wikipedia:Ulmus_minor_'Atinia'\|Ulmus minor 'Atinia']]) is another European Elm which might be found in a yard, or escaped from it. It is a sterile clone, regenerated by root suckers, and given its susceptibility to DED, [https://gobotany.nativeplanttrust.org/species/ulmus/procera/ GoBotany's reporting of it's presence in NE] is suspect.

	It has branches which are irregularly winged with 2 or more corky plates.		It has branches which are irregularly winged with 2 or more corky plates, similar to Rock Elm.

Watlington: Created page with "While the American Elm tree was devastated by the "Dutch" Elm Disease, there are other species of Elm trees, both native and invasive, growing around Acton. 248x248px Elm trees all have one leaf per node (alternate), and simple leaves with toothed edges. The base of the leaf is cordate (heart-shaped), and '''asymmetric'''. (If the base is symmetric, you are probably looking at a Birch tree) The different Elms are co..."

2023-12-22T06:02:10Z

Created page with "While the American Elm tree was devastated by the "Dutch" Elm Disease, there are other species of Elm trees, both native and invasive, growing around Acton. right|frameless|248x248px Elm trees all have one leaf per node (alternate), and simple leaves with toothed edges. The base of the leaf is cordate (heart-shaped), and '''asymmetric'''. (If the base is symmetric, you are probably looking at a Birch tree) The different Elms are co..."

New page

While the American Elm tree was devastated by the "Dutch" Elm Disease, there are other species of Elm trees, both native and invasive, growing around Acton.
[[File:EB1911 Leaf - Elm leaf.jpg|right|frameless|248x248px]]
Elm trees all have one leaf per node (alternate), and simple leaves with toothed edges. The base of the leaf is cordate (heart-shaped), and '''asymmetric'''. (If the base is symmetric, you are probably looking at a Birch tree)

The different Elms are confusingly similar. They are listed here starting with the ones most commonly found in Acton.

== Slippery Elm ==
The [https://gobotany.nativeplanttrust.org/species/ulmus/rubra/ Slippery Elm] ([[wikipedia:Ulmus_rubra|Ulmus Rubra]]) is probably the most common native Elm in Acton at this time. It is a smaller tree (usually no more than 50 ft. tall), frequently competing with birches in wet areas.

Slippery Elm is chiefly distinguished from American elm by its downy twigs, chestnut brown or reddish hairy buds, and slimy red inner bark. The lateral veins in a Slippery Elm leaf typically fork before reaching the edge of the leaf, versus the American Elm having lateral veins which rarely fork.

Unfortunately, it apparently [[wikipedia:Ulmus_rubra#Hybrids|readily hybridizes]] with the invasive Siberian Elm.

== Siberian Elm ==
The [https://gobotany.nativeplanttrust.org/species/ulmus/pumila/ Siberian Elm] ([[wikipedia:Ulmus_pumila|Ulmus pumila]]) is an invasive species frequently found along road edges in Acton.

In general it has smaller, more evenly sized leaves, and straighter stems/branches. The definitive tell is that the leaf edges have medium-sized to coarse teeth, whereas other Elms have leaf edges with teeth, with smaller teeth on them.

== American Elm ==
The [https://gobotany.nativeplanttrust.org/species/ulmus/americana/ American Elm] ([[wikipedia:Ulmus_americana|Ulmus Americana]]) was the largest species of Elm, commonly more than 100 ft. tall. It was largely wiped out by the introduction of the "Dutch" Elm Disease (DED), beginning in the 1930s. In 2023, there is no knowledge of old American Elms in Acton.

There has been work on identifying and breeding varieties with adequate resistance to DED. [https://www.elmpost.org/ An Acton citizen has been working since 1994] to re-introduce these resistant variants back into Acton's conservation lands. Some of these are now approaching 30 years of age and 40 ft. in height.

== Scotch Elm ==
The [https://gobotany.nativeplanttrust.org/species/ulmus/rubra/ Scotch or Witch Elm] ([[wikipedia:Ulmus_glabra|Ulmus glabra]]) is closely related to the Slippery Elm, but reaches taller heights (100 ft). It is native to the British Isles, and found throughout Europe. It might also be found in yards around Acton as an ornamental tree.

Slippery Elm has small hairs along the edges of the leaves (marginal cilia) and the winter bud scales are red, versus no hairs along leaf edges in Scotch Elm, which has reddish-brown or brown winter bud scales.

== Chinese Elm ==
The [https://gobotany.nativeplanttrust.org/species/ulmus/parvifolia/ Chinese Elm] ([[wikipedia:Ulmus_parvifolia|Ulmus parvifolia]]) is included in this list as it has been planted by towns in the area, and may be found in yards around Acton.

It has a very distinctive smooth peeling bark which sets it apart from the other Elm species.

== Rock Elm ==
The [https://gobotany.nativeplanttrust.org/species/ulmus/thomasii/ Rock Elm] ([[wikipedia:Ulmus_thomasii|Ulmus thomasii]]) is a native Elm found in the midwest, into the western edge of Vermont and NH. No sightings in Massachusetts.

It has branches which are irregularly winged with 2 or more corky plates.