Observation 18278: Cladonia grayi G. Merr. ex Sandst.
When: 2009-02-08
Herbarium specimen reported

Notes: Locations:
35°13’49.26"N, 85°57’47.14"W, el. 575 m. Dotson Point Trail.
35°12’38.36"N, 85°54’0.40"W, el. 587 m. Beckwith’s Point Trail.

Substrate: On the Dotson Point Trail, an extensive patch of this pixie-cup lichen is growing on a thin layer of sandy soil partially covering a nearly flat slab of sandstone. The patch is perhaps 5 m wide and 10-15 m long. On the Beckwith’s Point Trail, small patches of this lichen are growing on mineral soil and near the bases of trees on the rim of the canyon where the slope is beginning to be steep enough that the lichens avoid being buried by the heavy accumulation of leaf litter.

Habitat: Oak-dominated eastern deciduous hardwood forest at the western edge of the Cumberland Plateau.

Photos:
Dotson Point Trail, 2009-02-08: 36138, 36077
Dotson Point Trail, 2009-02-08: 36115-36121
Beckwith’s Point Trail, 2009-02-14: 37113-37117, 38350-38352
Dotson Point Trail, 2009-03-15: 42452-42456

Identification: Cladonia chlorophaea group (needs TLC to ID to species)

There are a number of pixie-cup lichens which look much like this one, so it is better to think of this as belonging to the pixie-cup group. The podetia of the lichens at the Beckwith’s Point locality are noticeably shorter than those found near Dotson Point. There may be more than one taxon involved.

Voucher specimens:
Tennessee, Franklin County, Sewanee, Dotson Point Trail, 15 Mar 2009, Chris Parrish 0012, det. Gary Perlmutter (NCU)
Tennessee, Franklin County, Sewanee, Beckwith’s Point Trail, 21 Mar 2009, Chris Parrish 0024, det. Gary Perlmutter (NCU)

Common name: pixie-cup lichen

Species Lists

Images

36138
Dotson Point Trail, 2009-02-08
36077
Dotson Point Trail, 2009-02-08
36115
podetia, 7.1x
36116
podetia, 7.1x
36117
podetia, 7.1x
36118
cup, 16x
36119
cups, 20x
36120
rim of cup, 50x
36121
x-section of podetium, 50x
37113
cup, 10x
37114
cup, 16x
37115
cup, 25x
37116
rim of cup, 63x
37117
podetium, 32x
38350
Beckwith’s Point Trail, 2009-02-14
38351
Beckwith’s Point Trail, 2009-02-14
38352
Beckwith’s Point Trail, 2009-02-14
42452
cups, 16x
42453
cups, 25x
42454
podetia, 16x
42455
squamules, 10x
42456
squamules, 16x

Proposed Names

30% (2)
Used references: Brodo, Sharnoff, and Sharnoff, pp.247-248
85% (1)
Eye3 Eyes3
Used references: Voucher specimens from this same patch of lichens in MO Observation 34343 were identified by James C. Lendemer (NY).

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2009-02-12 16:56:31 EST (-0500)
Last modified: 2010-06-09 02:53:20 EDT (-0400)
Viewed: 327 times, last viewed: 2016-03-29 08:49:03 EDT (-0400)
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