Archive for Bryology
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120
The development of and the changes in the classification of bryophytes are shown over the last two centuries. It is shown that, except for an early period, the bryophyte system was never totally revised but was always only slightly improved, in which the ideas of a bryophyte system has undergone some kind of evolution but was never drastically changed. Neither the evolution theory in the last century nor the results of cytology, phytochemistry, computerbased studies or genetics in this century had drastically altered the bryophyte system. The reasons for the never totally changed but always slightly improved classification of bryophytes seem to be that recognition of systematic units is based on certain principles such as hierachical classification, types and algorithms of comparison. Therefore it is postulated that no general changes in the classification of bryophytes are to be expected in the future.
081
Orthotrichum fastigiatum has variously been treated as a species or as subscpecies, variety or even as synonym of O. affine. The distinguishing characters between both taxa were studied. An evaluation revealed that some characters such as spore size (different but intergrading), exostome ornamentation, leaf apex, shape of papillae and lid cannot be used for differentiation. Other characters of O. fastigiatum such as smaller size, capsules imbedded in the leaves, a naked calyptra, the width of the ribs of the urn and the extend to which the empty capsule is contracted below the mouth are usable but hardly to quantify. The observation of mixed stands as well an apparent different ecology indicates different genotypes. Therefore O. fastigiatum should be regarded as infraspecific taxon of O. affine.
144
Leptodontium styriacum shall be distinguished from the closely related L. flexifolium by the frequent occurrence of gemmae, leaves ending in a hyaline cell and larger laminal cells. A critical evaluation of these characters revealed that these differences are obsolete. Therefore both species are synonymised with the result, that L. flexifolium has a disjunct range between the oceanic parts of Europe and the Alps, a distribution pattern also found in several other species.
178
During the past years, Fontinalis specimens with round, concave leaves were collected in Germany and Spain, which were named as F. antipyretica var. mollis. A comparison with the type of F. mollis revealed that they are not identical and accordingly are described as new variety, F. antiypretica var. rotundifolia.
184
Dicranodontium didymodon, a species described from the Himalaya was recently reported from Spain. It has been distinguished from D. denudatum by a smooth subula. A reexamination of the type of this species revealed no additional characters which would support the recognition of a separate species. Therefore D. didymodon is synonymised with D. denudatum. The specimen from Spain is referred to D. denudatum var. glabrum, which differs from D. didymodon by larger stature and lack of brood leaves.
180
051
The Moss Flora of Mauritius
(2009)
The mosses reported from Mauritius were compiled from the literature and are listed with localities and references. Included are collections by the first author made in 2007 on the island. Barbula indica, Campylopus flavicoma, Racopilum ayresii and Ectropothecium chenagonii, Groutiella tomentosa, Schlotheimia ferruginosa and Trichostomum crispulum are reported as new to Mauritius. The list includes 238 species. A short survey of the bryological exploration of the island is given.
152
195
The identity of Braunia alopecura (Brid.) Limpr. with Braunia secunda (Hook.) Bruch & Schimp.
(2013)
Braunia alopecura, originally regarded as species endemic to the Southern Alps, later known in addition from the the Cape Verde Islands and recently reported from the Indohimalaya, has revealed to be identical with the neotropical Braunia secunda. This is another case of an American species in the Southern Alps and in Europe in general, as well as an example of possible long distance dispersal.
189
Thalloid liverworts with unistratose thallus margins are easily determined as Aneura maxima, which shall be identified by this character. However, forms of Pellia epiphylla and P. endiviifolia grown under humid conditions can have an unistratose undulate thallus margin and thus confused with the latter. Pellia species can, however, be distinguished from Aneura by the presence of slime hairs vz. slime papillae, which are described and illustrated here.