Resurrection of the Plagiothecium longisetum Lindb. and proposal of the new species—P. angusticellum

Wolski, Grzegorz J.; Nowicka-Krawczyk, Paulina

doi:10.1371/journal.pone.0230237

Cited by 17 publications

(51 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The presence of such a long seta, i.e. up to 5 cm in length, and a long operculum, distinguish the sample from other species of Plagiothecium ; these characteristics, combined with the gametophyte features, are unique to P. longisetum ( Wolski and Nowicka-Krawczyk 2020 ).…”

Section: Plagiothecium Longisetum Accountmentioning

confidence: 95%

“…The remaining set of features provided by both authors are characteristic of both species: a large plant with a thick turf; loosely arranged and complanate-foliate; large (2.25 mm long and 1.1 mm wide), concave, long-ovate leaves; two costae; an acute to acuminate apex; a developed central strand; thin-wall cells ( Brotherus 1927 ; Iwatsuki 1970 unpubl. ; Wolski 2017 , 2018 , 2020 ; Wolski and Nowicka-Krawczyk 2020 ).…”

Section: Plagiothecium Mauiense Accountmentioning

confidence: 99%

“…After Iwatsuki (1970) , for the next 50 years, this view spread throughout Europe and Asia ( Lewinsky 1974 ; Iwatsuki 2004 ; Wynns 2015 ; Suzuki 2016 ). However, at the beginning of the 21 st Century, as a result of a taxonomic revision of P. nemorale sensu lato , Wolski and Nowicka-Krawczyk (2020) proposed the resurrection of P. longisetum , and for it to be treated as separate from P. nemorale , which also was distributed in Eurasia. Subsequent studies have revealed a number of differences between the two species in the micromorphology of their sporophyte; they also documented their presence in North America, thus extending their global range ( Wolski 2020 ; Wolski et al 2020 ).…”

Section: Plagiothecium Longisetum Accountmentioning

confidence: 99%

See 2 more Smart Citations

A new synonym from Hawaii and lectotypification of Plagiothecium longisetum (Plagiotheciaceae)

Wolski¹,

Proćków²

2020

Self Cite

View full text Add to dashboard Cite

Plagiothecium mauiense was first described in 1927 by V.F. Brotherus, based on materials from Hawaii. It has, so far been, treated as a separate species. A detailed analysis of the original material housed in the New York Botanical Garden Herbarium (NY01256708) found the specimen to be characterised by a lack of metallic lustre; concave, asymmetrical, lanceolate to lanceolate-ovate leaves, shrunken in their dry condition; a straight, not denticulate, acute to apiculate apex; elongate-hexagonal cells in irregular transverse rows, 101–131 × 15–21 µm at mid-leaf; very lax areolation, with decurrencies composed of three rows of cells. These characteristics indicate that this species is identical to the original material of P. longisetum (e.g. H-SOL 1563 011; PC0132572). Hence, we propose that P. mauiense should be recognised as a new synonym of P. longisetum. In addition, a review of P. longisetum syntypes found one (H-SOL 1563 011) to have the same date of collection as the protologue, and to possess a quite abundant gametophyte turf with well-preserved sporophytes, indicating it to be fertile. Considering the above, we propose that specimen H-SOL 1563 011 be designated the lectotype of P. longisetum.

show abstract

Section: Plagiothecium Longisetum Accountmentioning

confidence: 95%

Section: Plagiothecium Mauiense Accountmentioning

confidence: 99%

Section: Plagiothecium Longisetum Accountmentioning

confidence: 99%

See 1 more Smart Citation

A new synonym from Hawaii and lectotypification of Plagiothecium longisetum (Plagiotheciaceae)

Wolski¹,

Proćków²

2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…This confirmed the hypothesis that P. nemorale had previously been too broadly described, and that it should be considered a complex (Wolski, 2017(Wolski, , 2018. These observations were later confirmed by further taxonomic and molecular research (Wolski & Nowicka-Krawczyk, 2020), which found that two groups of specimens distinguished by Wolski (2017Wolski ( , 2018 are in fact two separate species: P. nemorale sensu stricto and P. longisetum Lindb.…”

Section: Introductionmentioning

confidence: 71%

“…Specimens with symmetrical leaves, a denticulate leaf apex, as well as hexagonal and narrowly hexagonal leaf cells no longer than 100 µm in the central part of the leaf were considered P. nemorale sensu stricto. Material with asymmetrical leaves, an entire leaf apex, and elongated hexagonal leaf cells longer than 100 µm but not exceeding 150 µm in the central part of the leaf was classified as P. longisetum (Wolski, 2017(Wolski, , 2018Wolski & Nowicka-Krawczyk, 2020).…”

Section: Methodsmentioning

confidence: 99%

SEM differences in sporophyte micromorphology of Plagiothecium nemorale and P. longisetum (Plagiotheciaceae, Bryophyta)

Wolski¹,

Bihun²,

Białecka³

et al. 2020

Folia Cryptog. Estonica

Self Cite

View full text Add to dashboard Cite

Plagiothecium nemorale sensu lato is described as a variable Eurasian taxon. Recent studies indicate that this variability is reflected in both qualitative and quantitative features of its gametophyte and its genetic variation. This taxon comprises at least two separate species: P. nemorale (Mitt.) A. Jaeger and P. longisetum Lindb. The present paper examines whether the gametophyte variability of these species is reflected in the micromorphological variation of the sporophyte. The analysis revealed that the seta of P. nemorale is shorter than that of P. longisetum. In addition, regarding the exostome teeth, the lower portion of the outer surface is characterised by loosely-arranged, moniliform cristae in P. nemorale, with conical papillae on the upper side; however, in P. longisetum it possesses tightly arranged, epapillose cristae, with clearly flattened papillae on the upper side. In addition, the inner surface is more gently papillose in P. nemorale than in the latter. These findings not only describe hitherto unknown features of the sporophyte of these species, but also justify the resurrection of P. longisetus as separate from P. nemorale.

show abstract

Reassessing the taxonomic diversity of Plagiothecium section Orthophyllum in the North American bryoflora

Wolski

2020

Brittonia

View full text Add to dashboard Cite

At the beginning of the twentieth century, Plagiothecium nemorale s.l. and P. succulentum, both belonging to P. sect. Orthophyllum, were considered to be distributed across almost the entire Northern Hemisphere. However, in the mid-twentieth century these taxa were recircumscribed resulting in their exclusion from the North American bryoflora and restricting their distributions to Asia and Europe, and in the case of Plagiothecium nemorale s.l., also North Africa. More recently, it was found that P. nemorale s.l. is a taxonomic complex comprising three distinct species: P. nemorale s.s., P. longisetum, and P. angusticellum. I revised the North American material of P. section Orthophyllum deposited in three herbaria (NY, FH, F) and found that five examined taxa of the section are present in the North America. Two of the species P. angusticellum and P. longisetum, have not been recorded from North America previously, while two others, P. nemorale and P. succulentum, had not been listed in the North American bryoflora for 50 years. One taxon is new for the U.S.A. – P. succulentum f. propaguliferum. Here I provide detailed descriptions of the anatomical and morphological features of the recorded taxa along with photographic documentation of their most important characteristics. I also summarize their known distributions in North America and ecological preferences and provide a key for their identification.

show abstract

Resurrection of the Plagiothecium longisetum Lindb. and proposal of the new species—P. angusticellum

Cited by 17 publications

References 24 publications

A new synonym from Hawaii and lectotypification of Plagiothecium longisetum (Plagiotheciaceae)

A new synonym from Hawaii and lectotypification of Plagiothecium longisetum (Plagiotheciaceae)

SEM differences in sporophyte micromorphology of Plagiothecium nemorale and P. longisetum (Plagiotheciaceae, Bryophyta)

Reassessing the taxonomic diversity of Plagiothecium section Orthophyllum in the North American bryoflora

Contact Info

Product

Resources

About