Sphaerolejeunea umbilicata (Lejeuneaceae): A Critically Endangered Epiphyllous Liverwort of the Andes

Reiner‐Drehwald, M. Elena; Drehwald, Uwe

doi:10.1639/0007-2745(2002)105[0422:sulace]2.0.co;2

Cited by 11 publications

(3 citation statements)

References 8 publications

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“…Crossotolejeunea , Cyrtolejeunea , Dactylolejeunea and Otigoniolejeunea were excluded following their relegation to synonymy (Reiner‐Drehwald & Goda, 2000; Gradstein et al ., 2001; Grolle, Zhu & Gradstein, 2001; the phylogenetic positions of Crossotolejeunea , Dactylolejeunea and Otigoniolejeunea were not shown by Weis (2001) in spite of the inclusion of these taxa in the datamatrix). The rare genera Myriocolea and Sphaerolejeunea were newly analysed using recently discovered material with sporophytes (Reiner‐Drehwald & Drehwald, 2002; Gradstein, Reiner‐Drehwald & Jost, 2003). Potamolejeunea and Trachylejeunea p.p.…”

Section: Methodsmentioning

confidence: 99%

A phylogenetic analysis of the genera of Lejeuneaceae (Hepaticae)

Gradstein¹,

Reiner‐Drehwald²,

Schneider³

2003

Botanical Journal of the Linnean Society

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The Lejeuneaceae are the largest family of the liverworts (Hepaticae), with almost a thousand species in 91 currently accepted genera. We analysed phylogenetic relationships of 69 genera, representing all major subfamilies and tribes recognized in the family, by using 49 informative morphological characters (31 gametophytic, 18 sporophytic), one chemical character, and applying equal and successive weighting of characters and parsimony analysis. In all trees recovered, the Lejeuneaceae were monophyletic with Nipponolejeunea (subfam. Nipponolejeuneoideae) forming the basalmost lineage. The remaining genera clustered in two major groups, the monophyletic Lejeuneoideae (52 genera) and the paraphyletic Ptychanthoideae (16 genera). Within each, several multigeneric lineages corresponding in part to previously described taxa were recovered: the Acrolejeuneinae and Ptychanthinae clades in the Ptychanthoideae, and the Brachiolejeuneinae, Lejeuneeae and Tuyamaella-Cololejeunea clades in the Lejeuneoideae. Bryopteris , a genus sometimes treated as a separate family, was nested in the Ptychanthinae clade. The Tuyamaella-Cololejeunea lineage corresponded with three previously recognized subfamilies (Cololejeuneoideae, Myriocoleoideae and Tuyamaelloideae) and contained genera with neotenic features, in two subclades. These features seemed to have originated by multiple heterochronic events: single origins were detected for 'protonemal neoteny' and 'primary neoteny', whereas 'secondary neoteny' probably evolved twice. Relationships within the large Lejeuneeae clade (43 genera) remained largely unresolved, although several putative lineages were detected in majority rule trees. Additional characters such as DNA sequences may provide better phylogenetic resolution in this group.

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Section: Methodsmentioning

confidence: 99%

A phylogenetic analysis of the genera of Lejeuneaceae (Hepaticae)

Gradstein¹,

Reiner‐Drehwald²,

Schneider³

2003

Botanical Journal of the Linnean Society

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“…Amblyolejeunea fulfordiae Ast was originally described with the distinguishing characters of eplicate perianths, entire underleaves and large leaf lobules (Jovet‐Ast, ), however, these features were considered unstable and the former genus was synonymized under Lejeunea (Zhu & Cheng, ). In the morphological treatment of Sphaerolejeunea , Reiner‐Drehwald & Drehwald () postulated a sister relationship to Lejeunea based on morphological similarities but refrained from lowering the former with the latter genus. Heinrichs et al () proved in their molecular phylogenetic study that Sphaerolejeunea is not in a sister relationship to Lejeunea , but instead is nested within the latter genus, and thus they treated Sphaerolejeunea as a synonym of Lejeunea .…”

Section: Discussionmentioning

confidence: 99%

Molecular and morphological evidence for a new species of liverwort, Lejeunea heinrichsii (Marchantiophyta: Lejeuneaceae) from Taveuni, Fiji

Lee

Bechteler

Pócs

et al. 2019

J of Sytematics Evolution

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A new species from Fiji, Lejeunea heinrichsii is described and illustrated herein based on morphological characters and molecular phylogenetic analyses. The taxonomic descriptions of L. heinrichsii and the comparison with their allies are presented, together with the Maximum Likelihood (ML) and Bayesian phylogenetic analyses based on sequences of two chloroplast regions (trnL‐trnF, rbcL) and the nuclear ribosomal ITS region. This delicate and rather minute species is characterized by its autoicy, eplicate perianths, the oblong‐rectangular leaf lobes, the distantly arranged underleaves with lobes to 1/2‐2/3 underleaf length, and the leaf cells without well‐developed trigones and intermediate thickenings. In the molecular phylogeny, L. heinrichsii is placed sister to the Asian L. compressiuscula from Indonesia and forms an independent lineage including accessions of Neotropical L. adpressa from the Dominican Republic and the widespread Palaeotropical L. anisophylla from São Tomé and Príncipe. Morphologically, L. heinrichsii is very similar to L. capensis, however the result based on the molecular phylogenetic analyses revealed that the two species are very distinct.

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“…(7) Sphaerolejeunea Herzog (Lejeuneaceae), with only S. umbilicata Herzog, 1400-1800 m, in the western Cordillera of the Colombian Andes and in northern Peru, Dept. San Martín (Herzog, 1938;Reiner-Drehwald and Drehwald, 2002).…”

Section: Introductionmentioning

confidence: 99%

Studies on Geocalycaceae XIV. Physotheca J. J. Engel & Gradst., a new genus of Hepaticae from Ecuador, belonging to a new subfamily, Geocalycaceae subfam. Physothecoideae J. J. Engel & Gradst.

Engel

Gradstein²

2003

TAXON

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Physotheca autoica J. J. Engel & Gradst. is a liverwort genus and species new to science and is endemic to the Andes of southern Ecuador. The new genus, while having several characters also found in the family Geocalycaceae, differs from members of that family in a num ber of important respects, which are discussed. The mode of growth of Physotheca is unusual, and occurs strictly by repeated innovations originating from below the bracts or bracteoles of the gynoecium. The inflated, bladder-like perianths are noteworthy, and have a shape and form that is remarkably similar to the sterile perianths of the unrelated genus Pleurozia. Capsule wall anatomy is also unusual, the walls are 7-8-stratose, and the outer layer, which has both one-phase and two-phase development represented, readily collapses. The large spores (to nearly 39 µm ) are echinate and nearly three times the elater width, and the elaters, which frequently uncoil, adhere in considerable num ber to the inner face of the capsule wall. The best placement of Physotheca is within the family Geocalycaceae. Due to the unusual combination of these and other characters, the genus does not fit into any of the known subfamilies of Geocalycaceae and must be placed in a new subfamily, Physothecoideae J.J. Engel & Gradst.

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Sphaerolejeunea umbilicata (Lejeuneaceae): A Critically Endangered Epiphyllous Liverwort of the Andes

Cited by 11 publications

References 8 publications

A phylogenetic analysis of the genera of Lejeuneaceae (Hepaticae)

A phylogenetic analysis of the genera of Lejeuneaceae (Hepaticae)

Molecular and morphological evidence for a new species of liverwort, Lejeunea heinrichsii (Marchantiophyta: Lejeuneaceae) from Taveuni, Fiji

Studies on Geocalycaceae XIV. Physotheca J. J. Engel & Gradst., a new genus of Hepaticae from Ecuador, belonging to a new subfamily, Geocalycaceae subfam. Physothecoideae J. J. Engel & Gradst.

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