Extinct Plants of northern North America

Updated 2014-12-22: Added years of extinction, where known. Started section for Extinct in the Wild (IUCN Red List code EW).

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I'm limiting this list for two reasons:

1. Restricting this list geographically is in keeping with my specialization in plants native to northeastern North America.
2. There are many more tropical plants, and plant extinctions, than I can manage; for example, Cuba alone has lost more plant species than I've listed on this blog post. 

If you have additions to this list, please let me know, and provide a link which I can research.

• Astilbe crenatiloba, Roan Mountain false goat's beard, Roan Mountain, Tennessee, 1885
• Narthecium montanum, Appalachian Yellow Asphodel, East Flat Rock Bog, Henderson County, North Carolina, before 2004?
• Neomacounia nitida, Macoun's shining moss, Belleville, Ontario, 1864
• Orbexilum macrophyllum, bigleaf scurfpea, Polk County, North Carolina, 1899
• Orbexilum stipulatum, large-stipule leather-root, Falls-of-the-Ohio scurfpea, Rock Island, Falls of the Ohio, KY, 1881
• Thismia americana, banded trinity, Lake Calumet, IL, 1916

Extinct in the wild

• Franklinia alatamaha, Franklin Tree

Extinct versus Extirpated

I often come across misuse of the word "extinct," as in: native plant extinct in New York City. "Extinct" means globally extinct. No living specimens exist anywhere in the world, not even in cultivation. "Extirpated" means locally extinct, while the species persists in other populations outside of the study area. To correct the above example: extirpated in New York City. Any regional Flora lists many extirpated species. When a species is known only from one original or remaining population, as those listed above were, loss of that population means extinction for the species. In this case, extirpation and extinction are the same thing. Another category might be "extinct in the wild" when the species still exists under cultivation, like an animal in a zoo. A famous example of this is Franklinia alatamaha.

Related Content

Links

Wikipedia: List of extinct plants: Americas IUCN Red List: List of species extinct in the wild, The Sixth Extinction: Recent Plant Extinctions Extinct and Extirpated Plants from Oregon (PDF, 5 pp)

Shrubberies

Update 2014-11-23:

• Completed Step #4 today, nearly injuring myself in the exertion. Did I mention that established grasses have deep and extensive roots?
• Also completed Step #5, replacing the Panicum.
• Added Step #9. I'd overlooked this shrub, and need to find a place where it can be featured, while still kept in bounds with the garden. I think where the Aronia once stood, a transplant I did in the Spring of this year.

Update 2014-11-10:

• I'm taking photos as the work progresses. See Before and After below.
• Reordered based on the progress I'm making. Because the Rhododendron is shallow-rooted, I decided to leave that until the last weekend before Thanksgiving, when I'll visit my sister and deliver her plants.

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It's a long weekend for me. The weather favors gardening.

I've got seven shrubs - and one or two mature perennials - to plant, transplant, and move out. Here's the plan.