Observation 19189: Ramalina americana Hale
When: 2009-03-05
Herbarium specimen reported

Notes: Locations:
35°12’15.59"N, 85°55’13.48"W, el. 589 m, Central campus.
35°12’38.36"N, 85°54’0.40"W, el. 587 m, Beckwith’s Point Trail.

Substrate: Four separate tufts growing with other lichens on a downed tree branch about 1 m long and 2 cm thick, evidently from the canopy of adjacent forest (central campus); on the trunk and main branches of a small ornamental tree beside a principal road through town (Beckwith’s Point Trail).

Habitat: Park-like area with lawn and scattered ornamental bushes bordering a parking lot and remnant of eastern deciduous woodland with introduced ornamental trees as well (central campus); small roadside ornamental tree (Beckwith’s Point Trail).

Photos:
Central campus, 2009-03-05: 38492-38510
Central campus, 2009-03-16: 39354
Beckwith’s Point Trail, 2009-03-08: 38713

Characterization: pale green, Usnea-colored, fruticose lichen with
(1) shrubby, tuft-like shape
(2) broad, strap-like, ascending branches, sometimes with flaring ends suggesting moose antlers
(3) prominent white, turret-shaped, cup-like pseudocyphellae

Chemistry: (central campus)
cortex C-, K-, KC+ yellow
medulla: C-, K-, KC-

Identification: Ramalina americana group (Needs TLC; it may be R. culbersoniorum)

Sewanee is near the distributional boundary between two chemotypes of Ramalina: R. americana to the N of here, with usnic acid, and R. culbersoniorum to the W, S, and SE of here with a number of lichen substances in the medulla. Both forms may occur here.

References:
Sharnoff’s Ramalina americana gallery
CNALH images and locality map, and a larger, interactive locality map.

Voucher specimen: Tennessee, Franklin County, Sewanee, central campus, 16 Mar 2009, Chris Parrish 0013, det. Gary Perlmutter (NCU)

Common name: sinewed ramalina

Species Lists

Images

38713
Beckwith’s Point Trail, 2009-03-08
38492
Central campus, 2009-03-05
38493
Central campus, 2009-03-05
38494
Central campus, 2009-03-05
38495
Central campus, 2009-03-05
38496
Central campus, 2009-03-05
38497
branches, 7.1x
38498
branches, 16x
38499
branch, 16x
38500
branch, 20x
38501
branch, 12.5x
38502
branch, 32x
38503
branch surface, 25x
38504
branch surface, 32x
38505
pseudocyphella, 16x
38506
pseudocyphella, 25x
38507
pseudocyphella interior, 50x
38508
pseudocyphella rim, 50x
38509
pseudocyphellae, 40x
38510
section thru branch, 100x
39354
cortex KC+ yellow (usnic acid)

Proposed Names

28% (1)
Eye3 Eyes3
Used references: Brodo, Sharnoff, and Sharnoff, pp. pp.621-622

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2009-03-06 22:37:58 PST (-0800)
Last modified: 2009-03-06 22:37:58 PST (-0800)
Viewed: 233 times, last viewed: 2017-06-05 06:21:56 PDT (-0700)