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Citation for Study 137

About Citation title: "A phylogenetic analysis of Epilobium (Onagraceae) based on nuclear ribosomal DNA sequences.".
About This study was previously identified under the legacy study ID S11x6x95c09c53c32 (Status: Published).

Citation

Baum D., Sytsma K., & Hoch P. 1994. A phylogenetic analysis of Epilobium (Onagraceae) based on nuclear ribosomal DNA sequences. Systematic Botany, 19: 363-388.

Authors

  • Baum D.
  • Sytsma K.
  • Hoch P.

Abstract

The internal transcribed spacers and 5.8S cistron of nuclear ribosomal DNA were sequence from 22 species of Epilobium and two outgroups. Phylogenies were inferred from the sequences using parsimony neighbor-joining maximum-likelihood and compatibility analysis. With parsimony we explored the effect of different weights for insertions/deletions (indwells) vs. substitutions coding vs. non-coding regions transitions vs. transversions and a post~riori character reweighting. Section Chamaenerion was fount to be sister to the rest of the genus. The remainder of Epilobium fell into two main clades: 1) sect. Epilobium, and 2) the xerophytic clate which comprises the remaining six sections. The unusual species E. rigidum (sect. Epilobium) hat an uncertain position appearing either at the base of sect. Epilobium, the base of the xerophytic clate or as sister to the entire genus except sect. Chamaenerion. Within the xerophytic clate relationships were incompletely resolved but a monophyletic group consisting of the annual sects Boisduvalia and Currania (both formerly constituting the genus Boisduvalia) and the perennial hummingbird- pollinated sect. Zauschneria was supported. The molecular phylogeny is compatible with some important independent characters and is useful for interpreting morphological and cytological evolution in Epilobium.

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  • Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S137
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