Arvernella microclada Hugonnot & Hedenäs (Amblystegiaceae), a new minute species from France,requiring a separate genus

Abstract

Arvernella microclada Hugonnot & Hedenäs is described from several localities in the Massif Central of France (Auvergne). This diminutive, autoicous, pleurocarpous moss has strongly prorate distal ends of the leaf lamina cells and straight and erect inner perichaetial leaves. It bears a superficial resemblance to small Heterocladium Bruch & Schimp. species, especially H. flaccidum (Schimp.) A.J.E.Sm. or weak phenotypes of H. wulfsbergii I.Hagen. Other small confervoid species, like Platydictya jungermannioides (Brid.) H.A.Crum or Serpoleskea confervoides (Brid.) Loeske differ in several respects, most notably in the absence of abaxial leaf lamina cell prorations, but also in rhizoid topography (Platydictya) and leaf orientation and leaf margin denticulation (Serpoleskea). Arvernella microclada grows in subalpine tall-herb communities and Fagus sylvatica L. mountain woods on small lava blocks on cold, unstable, and steep scree slopes. The restricted known geographical distribution may be of conservation concern.     

Notes on taxonomy of some European species of Ephemerum (Bryopsida: Pottiaceae)

Abstract

Taxonomy of some European species of Ephemerum is reviewed. As in several other recent studies, E. minutissimum Lindb. is regarded as a distinct species from E. serratum (Hedw.) Hampe; it is recorded from N. America (by the newly designated lectotype and other specimens) and Turkey, in addition to Europe. E. serratum var. angustifolium Bruch & Schimp. may be a synonym of E. minutissimum; the costate forms E. serratum var. praecox A.W.H.Walther & Molendo and E. intermedium Mitt. in Braithw. are treated as synonyms of E. serratum s.str. Type specimens of E. stellatum H.Philib. are described, a lectotype is designated and it is placed as a synonym of E. serratum s.str. E. hibernicum Holyoak & V.S.Bryan is regarded as a synonym of E. rutheanum Schimp. in Ruthe. The latter is shown to be a rare, European endemic taxon with modern records from Ireland, S. Wales, Germany and The Netherlands, and old records from France and W. Poland; a lectotype is designated. Forms intermediate between E. sessile (Bruch.) Müll.Hal. and the N. American E. crassinervium (Schwägr.) Hampe occur in several countries in W. Europe, some of them indistinguishable from some of the American plants; forms intermediate between E. sessile and E. rutheanum are recorded from S. Portugal and (rarely) Ireland. Differences between E. crassinervium, E. sessile and E. rutheanum in characters of leaves, tubers and capsules are shown to be slight, with considerable overlap. Hence all three taxa are treated as subspecies of E. crassinervium. A revised key to European Ephemerum and Micromitrium is presented.     

紫萼藓科植物一新种--曹氏紫萼藓北大核心CSCD

描述了新疆天山山脉紫萼藓科(Grimmiaceae)紫萼藓属(Grimmia)一新种——曹氏紫萼藓(Grimmia caotongiana D.P.Zhao,S.Mamtimin&S.He)。该新种与无齿紫萼藓(Grimmia anodon Bruch&Schimp.)最为相似,不同之处在于新种茎叶和雌苞叶均无白色毛尖,叶中部边缘背卷;近中肋细胞通常无色透明,且细胞壁比边缘细胞明显加厚。该研究对新种——曹氏紫萼藓进行了详细的特征描述,并提供了植物体形态显微解剖彩色照片以及相近种的分类学讨论。     

中国灰石藓属研究新资料

中国灰石藓属长期缺乏系统的形态特征描述和种间区分特征研究,分类鉴定较为困难。该研究采用经典分类学方法,通过查阅灰石藓属内相关物种的原始文献,借阅该属在中国有记载的3个物种的相关模式标本,同时搜集和观察来自美国、加拿大、俄罗斯、瑞典、瑞士、挪威、尼泊尔的标本以及中国内蒙古、四川、新疆等地的地方标本,确认了该属物种在中国的分布,增加了直叶灰石藓在内蒙古和新疆以及灰石藓在四川的新分布记录,并提供了详细的形态描述和图版,编制了中国灰石藓属植物的分种检索表。这3个物种在植物大小、叶是否具褶皱、茎叶和枝叶是否同形等特征上具有区别。该文增补的分布信息及种间区分特征可为中国灰石藓属及棉藓科相关类群的鉴定工作提供依据。     

Bucklandiella allanfifei (Grimmiaceae), a new moss species from New Zealand,with a note on South American B. striatipila

Abstract

A new species, Bucklandiella allanfifei Bednarek-Ochyra, is described from New Zealand. The new species belongs to Bucklandiella Roiv. sect. Marginatae (Bednarek-Ochyra) Bednarek-Ochyra & Ochyra and is allied to southern South American B. striatipila (Cardot) Bednarek-Ochyra & Ochyra. Bucklandiella allanfifei is characterized by the smaller stature of the plants, mostly prostrate and profusely branched stems, most often with short, erect-ascending branchlets, shorter leaves, 1.5–2.1 mm long (without a hair-point) and anatomy of the costa which is reniform to crescent-shaped in cross-section and 3(–4)-layered in the proximal part. Additionally, the laminal cells are short-rectangular in the distal and median parts, (15–)20–30(–40) μm long, the basal marginal border is composed of 3–4 rows of hyaline, translucent, esinuose and rectangular cells, the innermost perichaetial leaves are longly pilose, the capsules are ellipsoid to short-cylindrical, 1.5–2.0 mm long and the setae are short, (2.2–)3.0–4.5(–6.0) mm. Bucklandiella striatipila is briefly assessed taxonomically and it is considered to be definitely distinct from B. crispipila (Taylor) Bednarek-Ochyra & Ochyra, a pan-tropical oreophyte, with which it was prematurely considered conspecific. Racomitrium integripilum Dusén, R. gemminatum Roiv. and R. substriatipilum Roiv. are reduced to synonymy with B. striatipila. Two new combinations are made: Buckladiella elegans (Müll. Hal.) Bednarek-Ochyra & Ochyra and B. pycnotricha (Müll. Hal.) Bednarek-Ochyra, Ochyra & Seppelt.     

Andreaea megistospora and other interesting species from the Spanish bryoflora

Andreaea megistospora B. Murray is newly reported for Spain. New sites are reported for Ulota calvescens Wils., Tayloria tenuis (With.) Schimp., Metzgeria temperata Kuwah. and Frullania oakesiana Aust., very rare species in the Iberian Peninsula. Dicranum crassifolium Sérgio, Ochyra & Séneca is reported for Galicia.     

Additional reports for Italian moss flora

As a result of the study of both recent collections and a review of herbarium specimens, the following taxa are reported for the first time from various Italian regions: Hedwigia stellata Hedenäs, Hedwigia ciliata var. leucophaea Bruch & Schimp., Pleurozium schreberi (Willd. ex Brid.) Mitt. and Ptychostomum compactum Hornsch. var. compactum. The last taxon is new for southern Italy, while the report of Pleurozium schreberi confirms the occurrence of this species in southern Italy after more than half a century. Moreover, Crossidium laxefilamentosum Frey & Kürschner represents the second report of this species from Italy.     

On the identities of some neglected species of Grimmiaceae from Îles Kerguelen

Taxonomic status of five species of Grimmia Hedw. (G. minuta Müll.Hal., G. suborthotrichacea Müll.Hal., G. defoliata Müll.Hal., G. genuflexa Müll.Hal., and G. orthotrichacea Müll.Hal.) is appraised. All these species correctly belong within the genus Bucklandiella Roiv. They are actually inseparable from one another and represent a single species for which B. orthotrichacea (Müll.Hal.) Bednarek-Ochyra & Ochyra is chosen as the final name. The remaining four names are considered its synonyms, all but G. genuflexa being new. All the names are lectotypified and some details of the leaves of G. minuta and G. defoliata are illustrated.     

New and noteworthy records of mosses from Italian national and regional Parks

Some remarkable mosses, as a result of the study of both recent collections and a review of herbarium specimens, are reported in this paper. They are: Anomodon rugelii (Müll.Hal.) Keissl., new record from southern Italy, a moss very rare in the Mediterranean region and considered threatened in many European countries; Blindia acuta (Hedw.) Bruch & Schimp. and Dichodontium palustre (Dicks.) M. Stech, both new records from Sicily, are very rare mosses in Italy. Moreover, a new locality in Sicily for the little-known species Tortula bolanderi (Lesq. & James) M. Howe is reported.     

The genus Saitobryum (Pottiaceae) revisited

The genus Saitobryum R.H.Zander comprises two species: S. lorentzii (Müll.Hal.) Ochyra distributed in Mexico and the Central Andes and Saitobryum pascoense M.J.Cano & J.A.Jiménez from the Central Andes of Peru, described here as new. The new species is distinguished from S. lorentzii by its upper and middle laminal cells papillose throughout, border of 2–3 rows of thick-walled and smooth cells, lamina usually with bistratose patches, and occasionally bistratose margins. The diagnostic characters of Saitobryum are re-evaluated and a key to the species of this genus is provided. Both species are described and illustrated. New localities for S. lorentzii and a map showing the complete distribution of this genus are given.     

Notes on the bryophytes of the schistose valleys of western Crete,including Asterella africana new to Greece,and an assessment of the conservation status of Rhamphidium purpuratum and Jungermannia handelii

Atrichum laoshanense Y.-J.Yi &; S.He, a new species of Polytrichaceae from Laoshan mountain in Shandong Province, eastern China, is described and illustrated. The new species resembles, and is related to A. angustatum (Brid.) Bruch &; Schimp., but differs in the presence of stellately papillose median leaf cells, multicellular laminal teeth with well-defined outgrowths of pedestal cells on the distal dorsal lamina, and papillose stem epidermal cells. An updated key to species of Atrichum in China is presented.     

The top of the Pollino massif (southern Italy), an important refuge area for noteworthy mosses

The occurrence on the Pollino massif (southern Italy) of several remarkable mosses, which are rare or very rare in Italy, is reported. They are Orthotrichum acuminatum H. Philib., Distichium inclinatum (Hedw.) Bruch & Schimp. and Grimmia longirostris Hook., new to the southern part of the Italian peninsula, and Schistidium dupretii (Thér.) W.A. Weber, new to South Italy. Moreover, Orthotrichum cupulatum Hoffm. ex Brid. var. fuscum (Venturi) Boulay, a very rare taxon in Europe and up to now considered vanished in Italy, is rediscovered in Italy after about one century from its single previous report.     

基于ITS和trnL-F以及rps4基因片段的 粗疣藓属分类学地位研究

选择粗疣藓属及相关属样本作为内群,油藓属样本作为外群,选取核基因ITS片段以及叶绿体基因trnL-F和rps4片段进行PCR扩增、测序,运用贝叶斯推论(BI)、最大似然法(ML)和最大简约法(MP)构建分子系统发育树,以明确粗疣藓属的分类学地位。结果表明:(1)用于分子系统分析的基因序列共有1 744个位点,其中747个位点属于核基因片段,997个位点属于叶绿体基因片段。(2)3种系统发育树拓扑结构基本一致,都显示粗疣藓属与毛锦藓科成员聚成一支,支持粗疣藓属应隶属于毛锦藓科的观点。(3)小粗疣藓和粗疣藓的种间界限模糊。(4)小鼠尾藓属的3个种与棉藓属成员聚成一支,支持将其归入棉藓科的观点。     

Sphagnum subsecundum Nees and S. auriculatum Schimp. in Britain

Abstract

S. subsecundum Nees and S. auriculatum Schimp. are distinct species which can always be separated when well grown. Poorly grown S. auriculatum can resemble S. subsecundum, but can almost invariably be distinguished by careful selection of the larger stem leaves in any gathering. When the size of both stem and branch leaves is taken into account, confusion can hardly ever arise, even with depauperate forms. S. inundatum Russ. is not specifically distinct from S. auriculatum, and is recombined as S. auricula tum Schimp. var. inundatum (Russ.) M. O. Hill.     

A revision of the moss genus Sciaromium (Mitt.) Mitt. I. General remarks and the section Aloma Dusén

Abstract

The generic name Sciaromium (Mitt.) Mitt. that was originally used as a sectional epithet in Leskea is synonymous with Echinodium Jul E. madeirense Jur. [= E. spinosum (Mitt.) Jur.] is selected as the lectotype of the genus Echinodium. A historical review of taxonomic and nomenclatural problems in Sciaromium is provided and taxa that had previously been excluded from this genus are briefly discussed. Sciaromium flavidulum Dusén is a Eurhynchium and the combination E. flavidulum (Dusén) Ochyra is made. Sciaromium sect. Aloma Dusén is synonymous with Eurhynchium since E. flavidulum serves as the type species of this section. The taxonomic position of S. gracile Dusén is discussed and this species is considered synonymous with Amblystegium chilense Lor., which is transferred to Pseudoleskea and the appropriate new combination P. chilensis (Lor.) Ochyra made. Type specimens of S. bellii Broth., S. elimbatum Broth. & Watts and S. forsythii Broth. in Broth. & Watts are briefly described and illustrated; these species are reduced to synonymy with the polymorphic Cratoneuropsis relaxa (Hook. f. & Wils.) Fleisch. in Broth.     

A reassessment of some Asian species of Heterophyllium (Schimp.) Kindb. (Pylaisiadelphaceae,Bryophyta)

Introduction. Heterophyllium albicans Thér., H. henryi Tixier, H. micro-alare (Broth. & Paris) Broth. and H. tonkinense (Broth. & Paris) Broth. were all either poorly known species or known only from the type collections since their inception.

Methods. Examination of the type material confirmed that the alar cell structure in these species do not conform to the generic concept of Heterophyllium (Schimp.) Kindb. The study also revealed some new features previously unreported in these species, i.e., the filamentous pseudoparaphyllia, one of the characteristic features of the genus Isopterygium Mitt.

Key Results & Conclusions. Three new combinations, Isopterygium albicans (Thér.) Y.Jia & S.He, I. micro-alare (Broth. & Paris) Y.Jia & S.He, and I. tonkinense (Broth. & Paris) Y.Jia & S.He are proposed. Heterophyllium henryi Tixier is treated as a new synonym of Brotherella henonii (Duby) M.Fleisch.     

Characterization of ten polymorphic microsatellite loci for the threatened species Grimmia curviseta Bouman (Grimmiaceae,Musci)

Grimmia curviseta Bouman is a moss species endemic to the Canary Islands in the North Atlantic Ocean, which has a very restricted distribution across the summit areas of Tenerife and La Palma islands. Using massive sequencing, we developed ten polymorphic microsatellite markers for this species. The pattern of microsatellite alleles per locus provides preliminary evidence that G. curviseta is allodiploid. The average number of alleles per locus ranged from 2 to 7, and observed heterozygosities varied from 0.022 to 1.000. A significant genetic differentiation was observed between the Tenerife and La Palma populations, suggesting that there are some limitations to dispersal. This set of microsatellites constitutes a valuable tool to investigate patterns of genetic diversity across the distribution range of G. curviseta, information that may eventually be used to establish conservation strategies for the species. Owing to the cross-amplification with the closely related species Grimmia montana Bruch & Schimp., our study also demonstrates the utility of these markers for population-level genetic analyses in the genus Grimmia.     

A new species of Cheilolejeunea (Spruce) Schiffn. from Panama

Abstract

Cheilolejeunea (subgen. Strepsilejeunea) norisiae G. Dauphin & Gradst. sp. nov. is described and illustrated. The new species differs from other members of the genus Cheilolejeunea by the laciniate leaf margins and the large pre-apical tooth.     

Lack of intraspecific variation in cpDNA in Trichocolea tomentella

Abstract

The Asian genus Struckia Müll.Hal. is reduced to a synonym of Plagiothecium Bruch &; Schimp. according to a phylogenetic analysis involving S. argentata (Mitt.) Müll.Hal., S. enervis (Broth.) Ignatov, T.J.Kop. &; D.G.Long and 13 representative boreal species of Plagiothecium. Two nuclear regions, ITS and partial gapC, and five chloroplast regions, rbcL, rps4-trnS, psaB, trnG and trnL-F, were utilized to reconstruct the phylogenetic relationship between Struckia and Plagiothecium. Bayesian, maximum parsimony, and maximum likelihood analyses resulted in a strongly supported clade including Struckia and Plagiothecium. Plagiothecium handelii Broth. and P. paleaceum (Mitt.) A.Jaeger, which share similar geographical ranges with Struckia and intermediate morphological traits between Struckia and Plagiothecium, grouped with the Chinese Struckia, and all of them appeared as sister to the ‘core’ of Plagiothecium. The accurate position of P. piliferum (Sw.) Schimp. remains unclear due to moderate support from all analyses, and we suggest that it is retained in Plagiothecium until further evidence is available.     

Four new hepatics from Australia

Abstract

A new species, Racomitrium patagonicum Bednarek-Ochyra &; Ochyra, is described from southern South America. A herbarium name, R. senile Schimp. in A. Jaeger, is considered synonymous with R. patagonicum and confusion associated with its interpretation is explained. The new species belongs to the type subgenus of Racomitrium and is closely alied to R. lanuginosum (Hedw.) Brid. from which it differs by the very long and broadly decurrent, ruffled or wavy margins of the hyaline hair-point, broadly canaliculate leaves and dull green, strongly papillose laminal cells. Grimmia glacialis Müll. Hal., hom. illeg. (=Racomitrium glaciale Kindb.) from South Georgia is typified and this name is considered synonymous with Racomitrium lanuginosum subsp. lanuginosum. Distribution of the new species is mapped. A key to species of Racomitrium subg. Racomitrium is provided.