Usnea jørgenseniana Bystr. & Leśniewska sp. nova Usnea (subgen. Usnea, Parmeliaceae) in Sweden

Jan Bystrek, Joanna Leśniewska

Abstract


Usnea jørgenseniana Bystr. & Leśniewska sp. nova, an epixilic species of bushy Usnea (Parmeliaceae) in Sweden, is similar to U. hirta var. minutissima (Mer.) Bystr., but the similarity to U. hirta is apparent. U. jørgenseniana is not a species from the foveatae Mot. section. The lack of soralia and a very small thallus (0.3–2.0 cm) makes it difficult to locate U. jørgenseniana in the section Comosae Mot. It colonizes exceptionally unfavorable climatic conditions, a coprophilous species. Collected by G. Ohrstedt in 1937. Dozens of specimens from one position.


Keywords


Usnea jørgenseniana Bystr. & Leśniewska sp. nova, (Ascolichenes), taxonomy

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References


Asahina y. 1956. Lichens of Japan 3. Usnea. Research Inst. for Natural Resources, Tokyo.

Asahina y., Shibata S. 1954. Chemistry of lichen substances. Jap. Soc. for the Promotion of Science, Tokyo.

Awasthi D. D. 1986. The lichen genus Usnea from India and Nepal. Journ. hatton Bot. Labor. 61: 333–425.

Bystrek J., 1964. Przyczynek do poznania porostów Suwalszczyzny (Contribution à la connaissance des lichens de la region de Suwałki). Ann. UMCS Sect. C 19: 261–272.

Bystrek J. 1994. Usnea hirta (L.) Mot. in Europe. Ann. UMCS Sect. C, 49, 2: 19–30.

Bystrek J. 1994a. Studien über die Flechtengattungen Usnea in Europa. Wydawnictwo UMCS, 1–69.

Bystrek J., Górzyńska K.,1981. Porosty Roztocza (The lichens of the Roztocze Region (Eastern Poland). Fragm. flor. geobot. 27, 1–2: 213–237.

Clerc P. 1987. On the morphology of soralia in the genus Usnea. Bibliotheca Lichenologica 25: 99–107.

Clerc P. 1992. Some new or interesting species of the genus Usnea (lichenized Ascomycetes) in the British Isles. Candollea 47: 513–526.

Clerc P. 1997. Notes on the genus Usnea Dill. ex Adanson. Lichenologist 29: 209–215.

Clerc P. 1998. Species concepts in the genus Usnea (lichenized Ascomycetes). – Lichenologist 30: 321–340.

Clerc P. 2004. Notes on the genus Usnea Adanson. II. Bibliotheca Lichenologica 88: 79–90.

Halonen P., Myllys, L., Ahti, T., Petrova V.O. 1999. The lichen genus Usnea in East Fennoscandia. III. The shrubby species. Ann. Bot. Fenn. 36: 235–256.

Halonen P., Puolasmaa A. 1995. The lichen genus Usnea in eastern Fennoscandia. I. Usnea hirta. Ann. Bot. Fenn. 32: 127–135.

Holmgren P.K, holmgren N.h., Barnett L.C. 1990. Index herbariorum, Part I. The herbaria of the World. 8th ed. (Regnum Vegetabile vol. 120). Utrecht: Bohn. Scheltama & helkoma.

James P.W., Clerc P., Purvis O.W. 2009. Usnea Dill. ex Adans. In: P.A. Smith (eds). The Lichens of Great Britain and Ireland. British Lich. Soc., London, 6: 918–929.

Leśniewska J., Kuczyńska I., Bystrek J. 2008. The use of botanical microtechnique paraffin in anatomical studies of lichens. Ann. UMCS Sectio C 62: 93–101.

Motyka J. 1936–1938. lichenum generis Usnea. Studium monographicum, pars systematica. Leopoli: privately printed. 1947 pars generalis, Ann. UMCS Sect. C 3, 9 (Suppl.).

Swinscow T.D.V., Krog h. 1979. The fruticulose species of Usnea subgenus Usnea in East Africa. Lichenologist 11. 3: 207–252.

Thell A., Seaward M.R.D., Feuerer T. (eds). 2009. Key to European Usnea species. Bibliotheca Lichenologica 100: 419–462. J. Cramer in der Gebrüder Borntraeger Verlagsbuchhandlung, Berlin–Stuttgart.

Tõrra T., Randlane T. 2007. The lichen genus Usnea (lichenized Ascomycetes, Parmeliaceae) in Estonia with a key to the species in the Baltic countries. Lichenologist 39: 415–438.




DOI: http://dx.doi.org/10.17951/c.2018.73.1.31-39
Date of publication: 2019-06-10 12:48:58
Date of submission: 2019-06-10 12:23:31


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