Taxonomy of the New World species of Lotus (Leguminosae: Loteae)

Abstract

The aims of the present study were to elucidate the relationships of the New World Lotus species groups, subgenera Acmispon Raf. (sections Microlotus Benth. and Simpeteria Ottley), Hosackia Benth. and Syrmatium Vog., and to compare these results with previous classifications and recent morphological and molecular phylogenetic hypotheses. A numerical taxonomic study using unweighted pair-group arithmetic average clustering was performed. The phenogram was generated from 34 operational taxonomic units (OTUs) × 41 characters (four vegetative characters and the basic chromosome numbers, 16 epidermal traits and 20 reproductive characters). The epidermal microcharacters (epidermal cells, stomata, stomatal index and trichomes) are described and summarised for 18 species of Hosackia and Syrmatium, and the remaining characters were derived from the literature. Phenetic results resolved four groups of species which coincide with the new genera Acmispon, Hosackia Douglas ex Benth., Ottleya D.D.Sokoloff and Syrmatium proposed, having taken into consideration the most recent morphological and phylogenetic hypotheses.

Phylogeography and genetic structure of endemic Acmispon argophyllus and A. dendroideus (Fabaceae) across the California Channel Islands

“…In total, 15 populations of island A. argophyllus and 14 populations of A. dendroideus were sampled. Outgroup taxa were sampled to represent closely and more distantly related taxa based on taxonomy, phenotypic similarity, and previous phylogenetic analyses (Allan and Porter, 2000; Arambarri et al, 2005). These outgroup taxa included A. argophyllus var.…”

“…In total, 15 populations of island A. argophyllus and 14 populations of A. dendroideus were sampled. Outgroup taxa were sampled to represent closely and more distantly related taxa based on taxonomy, phenotypic similarity, and previous phylogenetic analyses ( Allan and Porter, 2000 ;Arambarri et al, 2005 ). These Genetic data collection -Genomic DNA was extracted from frozen leaf tissue using a modifi ed C-TAB protocol ( Friar, 2005 ) or the Qiagen DNeasy Plant Mini Kit (Valencia, California, USA).…”

“…Gray) Brouillet and A. dendroideus (Greene) Brouillet (Fabaceae) are insular endemics of the California Channel Islands. Both species belong to the informally recognized Syrmatium group within Acmispon ( Arambarri et al, 2005 ), but their divergent morphologies align them with diff erent mainland relatives, and they are not considered to be sister species ( Allan and Porter, 2000 ). Our sampling is not suffi cient to evaluate the phylogenetic position of these species within Acmispon ; thus, the phylogenetic placement of these species is not addressed here.…”

Lotus maritimus L.'nin (Leguminosae) in Vitro Rejenerasyon Potansiyeli

“…Genus Lotus L. (Leguminosae) comprises between 125 and 180 species, which is worldwide spread except in extremely cold regions and the lowlands in tropical areas of Southeast Asia, South America, and Central America (Arambarri et al, 2005;Diaz et al, 2005;Sokoloff and Lock, 2005). Among the species, Lotus corniculatus L., Lotus tenuis Waldst.…”

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“…In particular, both morphological (Sokoloff, 2003a(Sokoloff, ,b, 2006Arambarri & al., 2005;Degtjareva & al., 2006) and molecular (Degtjareva & al., 2003(Degtjareva & al., , 2006; present study) cladistic analyses support the monophyly of all genera of Loteae (as defined by Sokoloff, 2003a). Molecular and morphological data for the two species of Dorycnopsis also are congruent.…”