Callery Pear at Mount Majura
Identification history
| Pyrus calleryana | 27 Feb 2024 | abread111 | ||
| Pyrus sp. | 26 Feb 2024 | Tapirlord | ||
| Pyrus sp. | 26 Feb 2024 | abread111 | ||
| Unidentified | 26 Feb 2024 | abread111 |
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7 comments
abread111
wrote:
27 Feb 2024
I fear it is Pyrus calleryana. There are 4 varieties listed as "new" in the current MIS25 for planting in Canberra - a disaster in the making.
See https://hortflora.rbg.vic.gov.au/taxon/ad959e24-5340-11e7-b82b-005056b0018f for drawing of leaf margin for this species and for other Pyrus species.
Descriptions for P. calleryana varieties often mention scalloped leaves, but this sighting also looks wavy like the @MichaelMulvaney sighting of P. ussuriensis 2458832
See https://hortflora.rbg.vic.gov.au/taxon/ad959e24-5340-11e7-b82b-005056b0018f for drawing of leaf margin for this species and for other Pyrus species.
Descriptions for P. calleryana varieties often mention scalloped leaves, but this sighting also looks wavy like the @MichaelMulvaney sighting of P. ussuriensis 2458832
waltraud
wrote:
28 Feb 2024
Do I understand correctly? the list of species that are recommended of planting contains invasive weeds?
Mike
wrote:
28 Feb 2024
The callery pear invasion in the USA resulted from the mixing of 'safe' cultivars. An extract from a quick internet searsh: "Initially thought to be sterile, Bradford pear trees can cross-pollinate with other Pyrus calleryana cultivars, resulting in viable seeds. These seeds give rise to offspring with large thorns, which damage equipment and harm livestock. These hardy offspring, sometimes called Callery pears, have invaded forests, roadsides, and open fields, crowding out native species and reducing biodiversity." That's why it is on the list of Sleeper weeds.
waltraud
wrote:
28 Feb 2024
Is anything known about the 4 Callery Pear cultivars listed new in MIS25 of recommended plants? Mike, MIS25 is not a list of sleeper weeds to be avoided but a list of plant species / cultivars recommended for urban landscape planting; google TCCS (2021) STANDARDS, Part 25 Plant Species for Urban Landscape Projects. Wouldn't it be ironic if TCCS recommends to plant weeds that volunteers then remove from the nature reserve?
Mike
wrote:
28 Feb 2024
I mean the list of Sleeper Weeds on Canberra Nature Map https://canberra.naturemapr.org/species/lists/52.
abread111
wrote:
28 Feb 2024
Yes Waltraud the TCCS document MUNICIPAL INFRASTRUCTURE STANDARDS Part 25 Plant Species for Urban Landscape Projects does indeed recommend these 4 Callery Pears for planting, also other invasive plants like Hakea salicifolia, Gleditsia Honey Locust varieties, Golden Rain Tree, and probably others - needs urgent review.
Mike
wrote:
29 Feb 2024
Some American states have banned Callery pear. North Carolina introduced a weed swap that shut down because it was too successful. Ohio had it on the invasive plant list for some years and has now banned it.
I was surprised to see that Forest 87 at the National Arboretum is Callery pear Pyrus calleryana 'Chanticleer' a cultivar that was selected from a street planting in Cleveland, Ohio in 1965. It is also known as 'Cleveland Select'. According to https://www.nationalarboretum.act.gov.au/living-collections/forests-and-trees/forest-87 it was selected as Municipal tree of the year in 2005.
Now known as invasive and being prohibited. How things change!
I was surprised to see that Forest 87 at the National Arboretum is Callery pear Pyrus calleryana 'Chanticleer' a cultivar that was selected from a street planting in Cleveland, Ohio in 1965. It is also known as 'Cleveland Select'. According to https://www.nationalarboretum.act.gov.au/living-collections/forests-and-trees/forest-87 it was selected as Municipal tree of the year in 2005.
Now known as invasive and being prohibited. How things change!
Location information
- Coordinates 149.168626-35.228879
- Altitude 641.0m
- Maps Mount Majura
- Places Watson, ACT
Sighting information
- 2 Abundance
- 26 Feb 2024 10:38 AM Recorded on
- abread111 Recorded by
-
Collections
Plants Other Trees abread111
Additional information
- 30cm to 1 metre Plant height
- Alive / healthy Plant health
Species information
- Pyrus calleryana Scientific name
- Callery Pear Common name
- Not Sensitive
- Exotic
- Medium weed or pest
- Up to 714.36m Recorded at altitude
- Machine learning
-
In flower
- External link More information
Record quality
- Images or audio
- More than one media file
- Verified by an expert moderator
- Nearby sighting(s) of same species
- GPS evidence of location
- Description
- Additional attributes
