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Taxonomic Fun with Roses

Why taxonomy is fun and confusing … on the naming of roses.

For years we have grown a truly splendid red-leaved species rose that is hardy to zone 2 (that’s really hardy). When we first knew it, it was named Rosa rubrifolia but in recent years it has been renamed Rosa glauca. Takes a bit of remembering and getting used to , but I think we are there now. I finally decided to find out the reason for the name change and after a lot of searching came across the following explanation. Sadly it had nothing to do with DNA profiling or any of the other modern and abstruse taxonomic arts, just good old-fashioned precedence. ?

[Quote} “The familiar name R. rubrifolia (1789) is antedated by R. glauca Pourret (1788). It is arguable that the latter name, although the earliest, should be discarded as a source of confusion, since the name R. glauca Vill. ex Loisel. (1809) has been widely used for another ally of R. canina. However, even if the name R. glauca Pourret for the present species were to be rejected it would be impossible to maintain the name R. rubrifolia, which Villars rendered illegitimate by citing his own earlier-named species R. ferruginea as a synonym. This was a taxonomic error, since his R. ferruginea, with leaflets hirsute on both sides, was clearly not the same as his R. rubrifolia, which always has perfectly glabrous leaflets. The illegitimacy of the name R. rubrifolia means that if the name R. glauca Pourret were to be left in abeyance it would be necessary to take up the next legitimate name in order of priority, which would appear to be R. rubicunda Hall.”

Sunday, June 6, 2021|Categories: Baie-D'Urfe, flowers, Garden|Tags: , , , |0 Comments

Minimal-Knead Sourdough Focaccia

Sunday, March 14, 2021|Categories: bread, bread, Food, recipe|Tags: , |

This is an adaptation of a recipe culled from a baking blog (thanks Emily for the link) the URL of which I omitted to save. I have been playing around with various methods of making focaccia and I think this one comes the closest to my personal ideal of what the bread should look and taste like. Not [...]

A Year of Neighbourhood Nature

Thursday, March 4, 2021|Categories: 1000 Species, Baie-D'Urfe, birds, wildlife|Tags: , , , , |

How time does fly — just over a year ago I was inspired by a fine naturalist from England (thanks Tom) who had set himself the challenge of identifying 1000 UK species — birds, grasses, spiders, whatever. I had a couple of exchanges with him was assured that the concept was not trademarked, and so I thought to [...]

Bright Winter with Tracks

Thursday, February 25, 2021|Categories: Landscape, Montreal, winter|Tags: , , , |

Almost the end of February and a light snowfall overnight coated everything with a covering of snow and ice. The sun came out, the temperature was not many degrees below zero. In three or four weeks most of the snow will be gone (though more could arrive) and there will be a couple of weeks of mud [...]

Focusing on Sheep

Tuesday, February 9, 2021|Categories: computing, photography|Tags: |

Getting right to the point ... the focal point I like to do macrophotography - getting really close in on small features such as flowers and insects. But it has always had a significant limitation - depth of field. Not all of your subject is guaranteed to be in focus. I use a 100mm macro lens on a [...]

Half Way There with Pancakes

Sunday, January 31, 2021|Categories: winter|Tags: , , , |

Candlemas - Imbolc - Lupercalia February 2 this year is the festival of Candlemas/Imbolc/Lupercalia and marks the half way point between the Winter Solstice and the Spring Solstice - without a doubt this is a date to celebrate. Any reason for a drink and a good meal is worth making note of. Appropriately, the traditional symbol of this [...]

Photographs – Your Thoughts Please

Friday, January 29, 2021|Categories: Art, photography|Tags: |

I wonder if I might solicit your comments please on some pairs of photographs ... well, actually on the software that edited them. This week, after a sadly lengthy wait while the slow boat arrived from China, I finally took delivery of a spiffy new computer (Apple MacBook with the new super-powerful M1 chip if you are interested) and [...]

Arboretum Main Trail – Interactive map (Winter)

Sunday, January 24, 2021|Categories: arboretum, map|

We have created an interactive trail map for visitors following the Main (Orange) Trail in the Morgan Arboretum. This map is full of interesting information for walkers taking the trail during the winter months – a spring/summer version will be published around Easter time. Use the map on this page to plan you walk – and then [...]

Snowshoe Day

Monday, January 18, 2021|Categories: Landscape, Montreal, winter|Tags: , , , |

18 January, and after a weekend of heavy snowfall we went out to enjoy the countryside on the West Island. Considering this in Montreal, it's very pleasing to have such places within a very short distance from home. Lovely deep snow with a thin and crisp topping to wade through - thank goodness for snowshoes. There were [...]

“Naturally Speaking” – A Really Big Woodpecker

Friday, January 8, 2021|Categories: 1000 Species, Accounts, Birding, birds|Tags: , , , |

Even the woodpecker owes its success to the fact that he used his head. —Author Unknown Continuing with the theme of occasional “Naturally Speaking” accounts of species you can encounter on the West Island of Montreal I am going to introduce a another bird. Botanists and entomologist friends of mine need not fret - there will [...]

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