MORPHOLOGICAL STUDY OF THE GENUS GRIMMIA HEDW. (GRIMMIACEAE, BRYOPSIDA)
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Accession number;05A0192036
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| Title;MORPHOLOGICAL STUDY OF THE GENUS GRIMMIA HEDW. (GRIMMIACEAE, BRYOPSIDA) |
| Author;
STREIFF A
(Univ. Lausanne, Lausanne, Che)
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Journal Title;J Hattori Bot Lab
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Journal Code:Y0255A
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ISSN:0073-0912
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VOL.;NO.97;PAGE.317-338(2005)
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| Figure&Table&Reference;FIG.3, TBL.2, REF.37 |
| Pub. Country;Japan |
| Language;English |
| Abstract;This work investigates the phylogenetic relationships among species of Grimmia Hedw. using cladistic analyses based on morphological and anatomical characters. The genus Grimmia is taxonomically difficult, because of morphological homogeneity of both gametophyte and sporophyte, principally due to growth conditions. The forty Grimmia species used in this study represent the majority of those found in Europe and Asia. Ten taxa belonging to the Grimmiaceae and Grimmiales were included as outgroups. Fifty-two morphological and anatomical traits (33 gametophytic and 19 sporophytic) were identified. Based on these data, a maximum parsimony (mp) method was applied to construct a phylogeny of Grimmia. Eight hundred and nineteen mp-trees were found and although they had relatively low statistical support on the internal branches, the tree topology was stable. Based on the RC re-weighted consensus tree, Grimmia as currently defined was found to be paraphyletic. Three subclades corresponding to the subgenera Rhabdogrimmia Limpr., Litoneuron I. Hagen and Gasterogrimmia Schimp. were observed in the trees, while the remainder of the Grimmia species formed an unresolved group indistinct from the other Grimmiaceae. (author abst.) |
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