MADAGASCARIACEUM (Hue) Hale
SYNONYMS: Parmelia madagascariacea
HABIT: A large (8-20 cm), loosely adnate foliose lichen. Yellow-green
upper surface with black lower surface. Has marginal isidia and ciliate lobes.
SIMILAR SPECIES: Nearly identical to Parmotrema xanthinum
but with different chemistry. P. xanthinum reacts medulla C- while P.
madagascariaceum shows medulla C+ rose.
TOTAL RANGE: Southeastern U.S. where it is listed as rather
rare. (Hale, 1979)
STATE RANGE: One old record (pre-1945) from Jackson County
and one modern record from Vinton County.
STATE STATUS: 1992-1993: Added, 1994 to present:
HABITAT: Dry sandstone cliffs. Also reported to occur on
bark but both Ohio records are on rock.
HAZARDS: Habitat destruction.
RECOVERY POTENTIAL: Good if population is not totally
INVENTORY GUIDELINES: Collect whole thallus and store in paper
COMMENTS: Only one extant population known in Ohio.
Hale, M.E. 1979. How to know the lichens. Wm. C. Brown
Company Publishers. Dubuque, Iowa. 246 pp.
Taylor, C.J. 1967. The Lichens of Ohio. Part 1. Foliose
lichens. Ohio Biological Survey Biological Notes No. 3.
Department of Natural Resources
Division of Natural Areas and
Created: 3/1995 Ray Showman
Database Code: SPQC.L06