Didymodon mesopapillosus sp. nov. (Pottiaceae) from Tibet,China

Didymodon mesopapillosus J. Kou, X.‐M. Shao & C. Feng is described and illustrated as a new species from Tibet, China. It is characterized mainly by its ovate to ovate‐lanceolate leaves appressed to weakly erect when dry, margins recurved from leaf base to apex, laminal cell superficial walls markedly thicker than the internal walls, laminal papillae present only on both sides of costa, short‐excurrent costa, undifferentiated basal cells and differentiated perichaetial leaves. This species is compared with similar species and its ecology is discussed.     

Didymodon kunlunensis D.P.Zhao,S.Mamtimin & S.He (Pottiaceae), a new species from Xinjiang,China

Didymodon kunlunensis D.P.Zhao, S.Mamtimin & S.He is described as a new species found in Xinjiang, China. The new species is characterised by a combination of the following characters: ovate leaves with laminal cells always smooth, red colour in KOH, recurved leaf margins from base to apex, a percurrent costa without dorsal and ventral stereid bands in cross section, a distinct stem central strand and the presence of gemmae in the leaf axils. Light microscope photographs of the significant characters are provided and its distinctions from closely related taxa are discussed. A key to Chinese Didymodon species with smooth laminal cell is provided.     

Bryoerythrophyllum neimonggolicum X.-L.Bai & C.Feng (Pottiaceae), a new species from Inner Mongolia,China

Abstract

A new Inner Mongolian endemic species, Bryoerythrophyllum neimonggolicum X.-L.Bai & C.Feng is described and illustrated from China. It is characterized by lingulate to broad-lanceolate leaves with obtuse or rounded apex, leaf margins broadly recurved to revolute to near the apex, bulging laminal cells, basal cells with thickened walls and the absence of lax and enlarged basal cells. This species is compared with closely related species and its ecology is discussed.     

Macromitrium ousiense,a neglected Chinese moss species (Orthotrichaceae,Bryopsida) with new synonym and records

Macromitrium ousiense is a neglected Chinese moss species, differing from other taxa of the genus in its leaves with smooth laminal cells and gymnostomus capsules with hairy calyptrae. We found that M. heterodictyon Dixon is a new synonym of M. ousiense, and Japan is a new distribution record for the species.     

Vinealobryum guangdongensis (Pottiaceae,Musci), a new species with multicellular axillary gemmae from Guangdong,China

A new species belonging to Didymodon sensu lato, Vinealobryum guangdongensis, is described and illustrated from Nanling National Forest Park of Guangdong, China. It is characterized by noteworthily thick‐walled cells of the cauline central cylinder, ovate‐lanceolate leaves that are appressed when dry, acuminate to acute leaf apices, leaf base abruptly broadened and quickly narrowed to the insertion, leaf margins recurved in proximal 2/3 to 3/4, short‐excurrent costa with 0–1 layer of ventral stereids, laminal cells with conical or elliptical papillae either over the lumina or over transverse walls, presence of gemmae in the leaf axils, and KOH laminal color reaction red to reddish orange. This new species is compared with the most similar species and its ecology is discussed.     

Molecular circumscription and intraspecific variation in Porella canariensis (F.Weber) Underw. (Porellaceae,Marchantiophyta)

Abstract

Fissidens subpulchellus Norkett in Gangulee is critically revised, and reduced to the synonymy of F. pulchellus Mitt. A new species, Fissidens longtonianus Z.Iwats. &; Tad.Suzuki, is described from India. This moss was collected on a branch in Jdukki District, South India, and is separated from F. pulchellus Mitt. by its smooth laminal cells, shorter setae and larger, smooth spores.     

Didymodon liae sp. nov. (Pottiaceae) from Tibet,China

Didymodon liae J. Kou, X.‐M. Shao & C. Feng sp. nov., is described and illustrated from Dagzê County in south central Tibet, China. The new species is most similar to Didymodon australasiae (Hook. & Grev.) R. H. Zander, but differs in plants growing loosely in a thin turf, stems without hyalodermis and sclerodermis, margins recurved from just above the base nearly to the apex, laminal cells strongly bulging, mammillose, covered with simple or forked papillae, and costa with a layer of ventral substereids. The new species is contrasted with other similar species of the genus. Information on its distribution and ecology is also provided.     

Chenia zanderi C.Feng & J.Kou (Pottiaceae,Musci), a new species from Yunnan,China

A new species, Chenia zanderi C.Feng & J.Kou, from Xishan Forest Park in Yunnan Province, China is described and illustrated. Particularly distinctive features of the new species are the fragile stems and leaves fragile along their insertions, narrow leaves usually constricted near the middle, broadly rounded leaf apices with a long apiculus, large distal laminal cells with numerous solid and bifurcate papillae, a narrow groove on the distal ventral surface of the costa, and absence of a costal stereid band. A key for the species recognised in Chenia R.H.Zander is also provided.     

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.     

A new combination and a new species in the lichen genusCatapyrenium (lichenizedAscomycetes,Verrucariaceae)

Catapyrenium pyrenaicum is described as new from northern Spain and adjacent France, and the new combinationCatapyrenium velebiticum is made. The new species differs fromC. velebiticum mainly in its laminal pycnidia. Remarks on taxonomy, ecology, and distribution of the species are given.     

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.     

Re-evaluation of Hymenostylium xanthocarpum (Hook.) Brid., and Ardeuma R.H.Zander & Hedd., a new name for all other species of Hymenostylium (Pottiaceae,Bryophyta)

The Old World Hymenostylium xanthocarpum, the generitype of Hymenostylium, was found to be unrelated to the widespread H. recurvirostrum and other species currently placed in the genus. Major distinguishing traits of H. xanthocarpum are the presence of a stem central strand, leaves broadest about midleaf and constricted just above the base, distal laminal cells usually ventrally bulging and massively unipapillose, and basal cells differentiated only in the lower 1/5–1/7 of the leaf. A new genus name, Ardeuma, is proposed for the remaining species of Hymenostylium, and combinations are made for those that are commonly recognized. A key to Tuerckheimia species in the New World that may be confused with H. xanthocarpum is provided.     

中国藓类植物新记录种——莫氏疣壶藓

报道了采自中国广西乐业县大石围天坑群洞穴藓类植物中国新记录种——莫氏疣壶藓Gymnostomiella monodii P.de la Varde(丛藓科Pottiaceae)。该种的主要识别特征是:植物体细小;叶中上部边缘多具齿突,先端具短锐尖;叶中上部细胞一般具0~1(~2)个乳突状疣;芽胞棒槌状。中国目前分布的疣壶藓属植物共3种和2变种,并提供分种检索表。     

Pseudocrossidium perpapillosum (Pottiaceae) a new species from South America

Abstract

Pseudocrossidium perpapillosum M.J.Cano & J.A.Jiménez is described and illustrated as a new South American species from Argentina and Chile. It differs from other species of Pseudocrossidium R.S.Williams by the costa excurrent in an awn, elliptical in cross-section, with 4–5(6) guide cells, marginal laminal cells differentiated with rounded, thin-walled and papillose cells, paracostal distal cells with 1–2(4) bi- to quadrifurcate, long papillae, and perichaetial leaves differentiated.     

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.     

Didymodon vulcanicus J.A.Jiménez,Hedd. & Frank Müll. (Pottiaceae), a new species from tropical Africa

Didymodon vulcanicus J.A.Jiménez, Hedd. & Frank Müll. is described and illustrated as a new species from volcanic regions of tropical Africa. The species is distinguished morphologically by its lanceolate or more rarely ovate-lanceolate leaves that are strongly incurved distally when dry, acute apices, upper and middle laminal cells arranged in longitudinal rows with a low dorsal papilla over the transverse walls which reaches the two immediate cells, basal cells not or hardly differentiated from the medial cells, and the presence of gemmae in the leaf axils. Drawings and light microscope photographs of the main characters are given, and possible confusion with other closely related taxa is discussed.     

Didymodon caboverdeanus J.A.Jiménez & M.J.Cano (Pottiaceae,Musci), a new species from the Cape Verde archipelago

A new moss species, Didymodon caboverdeanus J.A.Jiménez & M.J.Cano, from the Cape Verde archipelago is described and illustrated. It differs most saliently from other species of Didymodon Hedw. by the combination of the lanceolate leaves with obtuse and often cucullate leaf apices, recurved margins, the yellowish colour in KOH, costa ending below the apex, laminal cells with low papillae over the transverse walls, which reach the two adjacent cells, the presence of gemmae in the leaf axils, and a short and straight peristome.     

Barbula sardoa (Schimp.) J.-P.Frahm,a new name for Barbula convoluta Hedw. var. commutata (Jur.) Husn.

Abstract

Barbula convoluta Hedw. var. commutata (Jur.) Husn. differs from var. convoluta not only by characters such as larger size, darker colour and undulate leaf margins, as mentioned in the literature, but, in addition, by a different transverse section of the stem, different basal laminal cells, different papillae on the leaf surface, a different spore ornamentation and different isozyme systems. It should therefore be regarded as a separate species. In this case, the legitimate name would be Barbula sardoa (Schimp.) J.-P. Frahm, since Barbula convoluta var. sardoa Schimp. is revealed to be an earlier synonym of var. commutata.     

地卷属1中国新记录种

通过对地卷属地衣形态和化学的研究,并结合核基因ITS序列的系统发育分析,报道了采自中国西北地区地卷属的1个中国新记录种——芽片地卷(新拟)。它的典型特征是沿着地衣体边缘或地衣体上表面裂隙具有大量的薄片状phyllidia,且常常覆有粉霜。地衣体上表面的边缘具有白色绒毛,下表面具有丛生假根,而且假根在边缘为白色,逐渐向中心变为深色。该研究提供了该种的详细描述,并与近缘种进行了细致的讨论。