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Rare Lichens

A. LICHENIZED FUNGI WHICH MAY WARRANT LISTING FOR PROTECTION
Draft list
Submitted by John W. Thomson and Susan Will-Wolf
October 1996 (Revised March 2000)

In addition to being rare, these species show some evidence of either decline or stress to populations, and so should be considered for protected status. The main criteria for rarity (see Table B) were 1) the existence of no more than 5 records in the state; and 2) knowledge by Dr. Thomson that the genus has been at least moderately well-collected in the state.


Species Name Growth
Form1
No. of Counties No. of Records Distribution
Ahtiana aurescens (Tuck.) Thell & Randlane fo 3 3 N
Anaptychia setifera Räsänen fo 1 2
Anzia colpodes (Ach.) Stizenb. fo 2 2 N
Aspicilia limitata (H. Magn.) J.W. Thomson
May be endangered
cr 2 2
Baeomyces rufus (Huds.) Rebent.
May be endangered in state
cr 1 1 N
Bryoria capillaris (Arch.) Brodo & D. Hawksw. fr 1 3 N
Bryoria nadvornikiana (Gyelnick) Brodo & Hawksw. fr 1 3
Caloplaca atroalba (Tuck.) Zahlbr. cr 2 2
Cetraria arenaria Kärnefelt
2 localities have since been eliminated
fo 5 6
Cladina arbuscula (Wallr.) Hale & Culb. fr 1 1
Cladonia decorticata (Flörke) Sprengel fr 3 5
Cladonia incrassata Flörke fr 3 4
Cladonia norrlinii Vainio = C. acuminata (Ach.)
Norrlin var. norrlinii May be extinct in state
fr 1 1
Cladonia sulphurina (Michaux) Fr. fr 1 1
Diplotomma alboatrum (Hoffm.) Flotow *
Common to the north of the state
cr 1 2-3? N
Dirinaria frostii (Tuck.) Hale & Culb. fo 2 3
Ephebe lanata (L.) Vainio
These records are old; may be extinct in the state
fr 1 1
Evernia prunastri (L.) Ach *
This is a western species with disjunct occurrences in the Great Lakes
fr 1 1 N
Graphis intricata Fee *
This species is at the edge of its range
cr 1 1
Heppia lutosa (Ach.) Nyl.
May be extinct at the one known location
sq 1 1
Hypogymnia tubulosa (Schaerer) Hav. *
Another western - Great Lake disjunction
fo 1 3 Apostle Is.
Icmadophila ericetorum (L.) Zahlbr. *
Abundant north of the state
cr 2 2 N
Lopadium pezizoideum (Ach.) Körber cr 2 2 N
Melanelia tominii (Oxner) Essl. = M. substygia
(Räsänen) Essl. * 
fo 1 1
Menegazzia terebrata (Hoffm.) Massal. fo 2 2
Pannaria pezizoides (Weber) Trevisan sq 2 2
Peltigera scabrosa Th. Fr. fo 1 1 N
Peltigera venosa (L.) Hoffm. fo 1 1 N
Pseudocyphellaria crocata (L.) Vain.
One record, dates from 1931
fo 1 1
Solorina saccata (L.) Ach. fo 3 3
Sticta beauvoisii Delise = S. weigelii (Ach.) Vainio fo 5 5
Teloschistes chrysopthalmus (L.) Th. Fr.
Until Fall 1999**, the last record of this genus in the state was in 1893
fr 1 3
Usnea angulata Ach. fr 4 4 N
Usnea ceratina Ach. fr 1 1 N
Usnea longissima Ach. fr 2 2 N
Usnea rubicunda Stirton
Two specimens collected before 1900. Habitat destroyed for locations of at least three specimens.
fr 6 7


1 fr=fruticose, fo=foliose, sq=squamulose, cr=crustose

* These species' ranges barely reach into Wisconsin, where they are rare. They are less rare elsewhere in their ranges.

**Matt Nelson collected this species in Dane County, WI in Fall 1999.

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Rare Lichens