Plant Species of the South Kaibab Trail:
hairy erioneuron, Erioneuron pilosum

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

This page is just a shell to hold my photographs for now, along with very cryptic notes I made from the identification process, so that readers can see the photographs for this taxon. The identification status, voucher info, and discussion of the species will be added in the future.

Characteristics

Identification status: .

I didn't recognize this grass in the field, but as soon as I saw the hairy lemmas in my photograph knew it was one of the beautiful little fluff grasses.

McDougall:

 1' Spikelets not in groups of 3
 2' Glumes remain on plant
19' Spikelets stalked, in panicles
40' Spikelets many-flowered
78' Glumes shorter than the lowest floret
82' Low plant less than 6 feet tall
83  Lemmas 3-nerved
84' Lemmas hairy below
85' Plants without runners; panicles not headlike
86  Glumes shorter than the lowest floret; lemma awned ... E. pilosum

McDougall used the name Tridens pilosa for these plants.

These plants match the drawing at USDA Plants.


From a SEINet search on 8 September 2008, 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 South Kaibab Trail: mile 2.37, elevation ~5300 feet (~1615 m).

Number of plants along Trail: at least 5 plants were found in at least 2 different locations in August 2008.

Pictures

From 24 August 2008, mile 2.37:

From 24 August 2008, mile 2.73:

References


Go to:


Copyright © 2008 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:
http://tchester.org/gc/plants/species/erioneuron_pilosum.html
Comments and feedback: Tom Chester
Last Update: 8 September 2008