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Perpignan, France

Thouvenot L.,11 rue Saint Leon | Yong K.-T.,University of Malaya
Cryptogamie, Bryologie

The moss Macromitrium larrainii sp. nov. from Mt Panié, the highest summit of New Caledonia, is described and illustrated. This species is characterised by 1) the hairy appearance of branches due to the long aristate leaves arranged irregularly, not spirally, 2) the narrow leaf lamina asymmetrical above, 3) leaf cells consistently smooth, and 4) upper leaf cells irregular in shape and basal ones linear with a straight lumen. Comparison with similar Macromitrium species in neighbouring countries confirms that it is a new species, likely endemic. © 2015 Adac. Tous droits réservés. Source

Thouvenot L.,11 rue Saint Leon | Gradstein S.R.,French Natural History Museum | Zhu R.-L.,East China Normal University
Cryptogamie, Bryologie

The liverwort Ceratolejeunea bardatii sp. nov. (Lejeuneaceae) is described and illustrated from submontane, mesophilous valley forest of New Caledonia. The new species stands out by 1) leaf lobes with a 2-cells wide vitta of dark brown ocelli and some additional adjacent ocelli; 2) upper leaf margins with allorgella-type denticulations; 3) utricles absent; and 4) perianths short obovoid and with 4 flat or twisted horns. The new species constitutes the first record of the genus Ceratolejeunea for New Caledonia. © 2015 Adac. Tous droits réservés. Source

Thouvenot L.,11 rue Saint Leon | Reeb C.,CNRS Systematics, Biodiversity and Evolution Institute

A new species of Riccardia, R. elisabethae, is described from ultramafic substrate in mountain scrubland of New Caledonia. The new species is a member of the subgen. Thornoneura and differs from other species of this group by the rigid, unwinged thallus made up of large epidermal cells surrounding smaller medullary cells with thick porose walls and huge trigones. © 2014 Royal Botanic Gardens and Domain Trust. Source

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