When: 2009-02-08

Collection location: Sewanee, Franklin Co., Tennessee, USA [Click for map]

Who: Chris Parrish (kitparrish)

Specimen available

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

Dotson Point Trail, 2009-02-08
Dotson Point Trail, 2009-02-08
podetia, 7.1x
podetia, 7.1x
podetia, 7.1x
cup, 16x
cups, 20x
rim of cup, 50x
x-section of podetium, 50x
cup, 10x
cup, 16x
cup, 25x
rim of cup, 63x
podetium, 32x
Beckwith’s Point Trail, 2009-02-14
Beckwith’s Point Trail, 2009-02-14
Beckwith’s Point Trail, 2009-02-14
cups, 16x
cups, 25x
podetia, 16x
squamules, 10x
squamules, 16x

Proposed Names

30% (2)
Used references: Brodo, Sharnoff, and Sharnoff, pp.247-248
85% (1)
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.

= Observer’s choice
= Current consensus

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