Plant Species of the Bright Angel Trail:
Simpson's buckwheat, Eriogonum microthecum var. simpsonii

See Plant Guide to Bright Angel Trail for an introduction to this page, especially the Introduction To These Species Pages.

This page is just a shell to hold my photographs and reference information for now, so that readers can see the photographs and this taxon. The identification status, voucher info, and discussion of the species will be added in the future.


Identification status: .

From a SEINet search on 29 September 2007, there are vouchers of this species from the Coconino County portion of the Grand Canyon. The nearest are at: ; and . Note that there may be additional vouchers at other herbaria not available through SEINet.

First occurrence on Bright Angel Trail: mile 0.33, elevation 6668 feet (2032 m).

Number of plants along Trail: this taxon is quite common along this trail; at least 50 plants were found in at least 9 different locations in September 2007.


From 5 September 2007, mile 0.33:

The white blooms are the Eriogonum; the blue-purple blooms are from Machaeranthera canescens:


See Resources for Grand Canyon Flora for further information on most of these references. Entries in the second column are either the name used in that source or a page reference. The name is linked to online pages when available. If a given reference does not contain this taxon, the entry is either left blank or contains a hyphen.

Scientific NameEriogonum microthecum var. simpsonii
1987 Grand Canyon Flora NameEriogonum microthecum var. foliosum
1987 Grand Canyon Flora page51
SEINet Image PageEriogonum microthecum var. simpsonii
USDA PlantsEriogonum microthecum var. simpsonii
Flora of North AmericaEriogonum microthecum var. simpsonii
Jepson Manual for California treatmentEriogonum microthecum var. simpsonii
Jepson Manual illustration page(877)
Kearney and Peebles NameEriogonum simpsoni
Kearney and Peebles Page #243
Vascular Plants of AZ name
Vascular Plants of AZ volume: page
Huisinga et al 2006 name-
Huisinga et al 2006 page numbers-
Epple Name-
Epple description page #-
Epple pix #-
McDougall 1964 nameEriogonum simpsoni
McDougall 1964 page #79
Brian 2000 Name
Phillips 1979 name-
Phillips 1979 page #-
Stockert 1967 name-
Stockert 1967 page #-

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Copyright © 2007 by Tom Chester.
Permission is freely granted to reproduce any or all of this page as long as credit is given to me at this source:
Comments and feedback: Tom Chester
Last Update: 3 October 2007