Published September 17, 2021 | Version v1
Taxonomic treatment Open

Chionoloma tenuirostre var. tenuirostre M. Alonso, M. J. Cano & J. A. Jiménez var. tenuirostre

  • 1. Saint Léon, 66000 Perpignan (France) thouvenot. louis @ orange. fr
  • 2. Technische Universität Dresden, Institut für Botanik, 01062 Dresden (Germany)

Description

* Chionoloma tenuirostre (Hook. & Taylor) M.Alonso, M.J.Cano & J.A.Jiménez var. tenuirostre

SPECIMENS EXAMINED. — New Caledonia. North Province, Poya 15 km NE, limestone massif Roche d’Adio, 21°14’S, 165°15’E, on limestone rockface, c. 200-250 m, 06.IX.2003, Müller NC464 (DR).

COMMENTS

In New Caledonia, three species of the genus Chionoloma Dixon were hitherto known, namely Chionoloma dubium (Thér.) M.Alonso, M.J.Cano & J.A.Jiménez, C. orthodontum (Müll.Hal.) M.Alonso, M.J.Cano & J.A.Jiménez, and C. schlimii (Müll.Hal.) M.Alonso, M.J.Cano & J.A.Jiménez (Alonso et al. 2019). Record details of our own collections of

C. dubium and C. schlimii (as C. crassicostatum (D.H.Norris & T.J.Kop.) M.Alonso, M.J.Cano & J.A.Jiménez) are given in Thouvenot et al. (2018). Here we report a fourth species of the genus, C. tenuirostre, as new for New Caledonia. This species is most similar to C. orthodontum, but is differing by its leaf basal marginal cells, which do not extend up the margin to form a V-shaped pattern, and its dorsal stereid band of the costa, which is usually larger than the ventral band (Alonso et al. 2019). Chionoloma tenuirostre var. tenuirostre has a cosmopolitan distribution, except for arctic regions (Alonso et al. 2019), the nearest known records are in Australia, New Zealand and Papua New Guinea.

Notes

Published as part of Thouvenot, Louis & Müller, Frank, 2021, Contribution to the bryophyte flora of New Caledonia IV. Species new to the country, new localities together with taxonomic notes, pp. 181-196 in Cryptogamie, Bryologie 20 (13) on page 192, DOI: 10.5252/cryptogamie-bryologie2021v42a13, http://zenodo.org/record/7822275

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Linked records

Additional details

Biodiversity

Family
Pottiaceae
Genus
Chionoloma
Kingdom
Plantae
Order
Pottiales
Phylum
Bryophyta
Species
tenuirostre
Taxon rank
variety

References

  • ALONSO M., JIMENEZ J. A. & CANO M. J. 2019. - Taxonomic Revision of Chionoloma (Pottiaceae, Bryophyta). Annals of the Missouri Botanical Garden 104: 563 - 632. https: // doi. org / 10.3417 / 2019381
  • THOUVENOT L., MULLER F. & GRADSTEIN S. R. 2018. - Contribution to the bryophyte flora of New Caledonia III. New and interesting records, new combinations and new synonyms. Cryptogamie, Bryologie 39: 361 - 376. https: // doi. org / 10.7872 / cryb / v 39. iss 3.2018.361