Chromosome numbers in Pinguicula (Lentibulariaceae): survey, atlas, and taxonomic conclusions

Genome size and genomic GC content evolution in the miniature genome‐sized family Lentibulariaceae

“…() and corresponds to a different ploidy level (‘tetraploid’) within this morphologically and karyologically variable species (Rivadavia, ; Albert et al ., ). Similarly, in Pinguicula ehlersiae , the two‐fold difference in the measured genome size (1C = 978 Mbp in our study vs 1C = 487 Mbp by Greilhuber et al ., ) also corresponds with the existence of two ploidy levels (2 n = 22, 44; Casper & Stimper, ). Some other disagreements reported here, such as in Genlisea violacea , are perhaps due to the unrecognized taxonomic diversity, noting that the G. violacea complex has only recently been divided into five separate species (Fleischmann et al ., ).…”

A new diploid butterwort species (Pinguicula, Lentibulariaceae) from Sardinia

“…In this framework, P. sehuensis could indeed represent this diploid species. However, it must be noted that Casper & Stimper (2009), in their survey on Pinguicula chromosome numbers, while confirming the diploid status of P. corsica, actually confuted the counts for P. dertosensis and P. nevadensis, which they reported as octoploid with 2n = 64 and tetraploid with 2n = 32 chromosomes, respectively. Irrespective of this, we can consider P. sehuensis as a patroendemic species, i.e.…”

“…The latter authors significantly contributed in explaining the phylogenetic relationships within this genus, showing that many of the infrageneric taxa recognized by Casper (1966) are poly-or paraphyletic. Recently, Degtjareva et al (2004) provided useful new taxonomic information on seed morpho-anatomy, Rodondi et al (2010) studied pollen morphology in detail, while Peruzzi (2004) and Casper & Stimper (2009) summarized the karyological knowledge of this genus.…”

Disentangling Phylogenetic Relationships in a Hotspot of Diversity: The Butterworts (Pinguicula L., Lentibulariaceae) Endemic to Italy

“…Moreover, the generative and vegetative rosettes can be different in shape and/or size, allowing a distinction between homoblastic (homophyllous) and heteroblastic (heterophyllous) species [5]. Another important diagnostic feature in butterworts is their chromosome number, and five different basic chromosome numbers, x = 6, 8, 9, 11, 14, have been identified [6]. Casper [7] divided the genus into three subgenera and 15 sections, but his taxonomy resulted artificial in several cases [8].…”

“…[14], Kondo & Shimai [15], Shimai & Kondo [16] and Shimai et al . [17]; (2) a complete GenBank nrDNA- Pinguicula database to be used for an exhaustive phylogenetic reconstruction; (3) completeness of information as a consequence of the biparental inheritance of nrDNA [6, 26, 27, 28]. In fact, cpDNA markers may cause confusion in inferring phylogenetic relationships in potentially hybrid/introgressed/polypoid taxa (e.g.…”