Taxonomic Swap 31482 (הועלה ב 2018-04-04)

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iNaturalist authorities:
Calls it S. canadensis:

Weakley 2015

Calls it S. nigra subsp. canadensis:


Listed as present in California by USDA PLANTS, but taxon not recognized in Calflora (only S. nigra subsp. caerulea listed).


The Plant List, which calls it S. canadensis

Not iNat authorities, but the following also call it S. canadensis:
Plants of the World Online
Michigan Flora
Flora of Missouri
Flora of the Chicago Region
Weber/Wittmann Flora of Colorado, per @cwarneke above as I do not have a copy

The Plant LIst (ציטוט)
נוסף על־ידי bouteloua בתאריך מרץ 31, 2018 03:45 אחה"צ | אושר על ידי bouteloua בתאריך אפריל 4, 2018
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I added common name "Common Elderberry" to Canada. Not sure what the name should be for the States but I doubt American Black Elderberry is the most widely used

פורסם על-ידי reuvenm לפני בערך 6 שנים

I've only heard folks call it black elderberry here.

פורסם על-ידי bouteloua לפני בערך 6 שנים

Huh okay - very odd how these names vary so much over such a short distance!

פורסם על-ידי reuvenm לפני בערך 6 שנים

Here is a paper that goes over the arguments for and against recognition of Sambubcus canadensis as a separate species:

Applequist, W. L. (2013, June). A brief review of recent controversies in the taxonomy and nomenclature of Sambucus nigra sensu lato. In I International Symposium on Elderberry 1061 (pp. 25-33).

While the main European and Eastern North American varieties have the same number of chromosomes, very similar pollen, and are potentially indistinguishable morphologically, they seem to be reproductively isolated not only geographically but also by the apparent general sterility of their hybrids.

Here is a quote from another paper paraphrasing part of the results of a different study:

"Seed set was obtained from the cross S. canadensis × S. nigra (Chia 1975). From 3 crosses, one produced 63 seeds and 2 seedlings, one produced 43 seeds and no seedlings, and one was sterile."

Atkinson, M. D., & Atkinson, E. (2002). Sambucus nigra L. Journal of Ecology, 90(5), 895-923.

Sadly, I can't access the study mentioned in the above quote, but here is its citation:

Chia, C. L. (1975). A chromosome and thin-layer chromatographic study of the genus Sambucus L. Diss. Abstr. Int., B, 36(4), 1565.

Still, the crossing data is a relatively small sample size. And there doesn't seem to be any good molecular phylogenetic studies that address the taxonomy of S. nigra.

פורסם על-ידי dziomber לפני בערך 6 שנים

To explain the description of the taxonomic change:

פורסם על-ידי bouteloua לפני בערך 6 שנים

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