Plant Species of the Bright Angel Trail:
pallid hoptree, Ptelea trifoliata ssp. pallida var. pallida
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 0.76, elevation 6344 feet (1934 m). The first off-trail occurrence is at mile 0.18, elevation 6748 feet (2057 m).
Number of plants along Trail: at least 40 plants were found in at least 9 different locations in September 2007.
From 5 September 2007, off-trail plant at mile 0.18 that appears mostly dead, but may just be mostly dormant:
From 5 September 2007, plant at mile 0.76:
From 6 September 2007, plant at mile ~1.65 with fruit:
From 6 September 2007, plant at mile ~3.2 that also appears mostly dead, but may just be mostly dormant:
Note the gland-dots on the leaves (the little white dots all over the surfaces of the blades) in the next three pictures:
View of the top of the fruit, showing the three wings:
View of the side of the fruit, with one wing heading almost directly to the camera:
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.
Family Rutaceae Scientific Name Ptelea trifoliata ssp. pallida var. pallida 1987 Grand Canyon Flora Name Ptelea trifoliata ssp. pallida var. pallida 1987 Grand Canyon Flora page 55 SEINet Image Page Ptelea trifoliata USDA Plants Ptelea trifoliata ssp. pallida var. pallida Flora of North America Jepson Manual for California treatment Jepson Manual illustration page Kearney and Peebles Name Ptelea pallida Kearney and Peebles Page # 495 Vascular Plants of AZ name Vascular Plants of AZ volume: page Huisinga et al 2006 name Ptelea trifoliata ssp. pallida var. pallida Huisinga et al 2006 page numbers 60-61 Epple Name Ptelea trifoliata Epple description page # 132 Epple pix # 98 McDougall 1964 name Ptelea pallida McDougall 1964 page # 145 Brian 2000 Name Phillips 1979 name Ptelea trifoliata Phillips 1979 page # 23 Stockert 1967 name - Stockert 1967 page # -
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: 2 October 2007