Acedo, C. & Llamas, F. 2001: Variation of micromorphological characters of lemma and palea in the genus Bromus (Poaceae). — Ann. Bot. Fennici 38: 1–14.
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Gratani, L. & Bombelli, A. 2001: Differences in leaf traits among Mediterranean broad-leaved evergreen shrubs. — Ann. Bot. Fennici 38: 15–24.
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He, X.-L. & Grolle, R. 2001: Xylolejeunea, a new genus of the Lejeuneaceae (Hepaticae) from the Neotropics, Madagascar and the Seychelles. — Ann. Bot. Fennici 38: 25–44.
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Mastracci, M. 2001: Taxonomic status of Thamnium cossyrense and T. cossyrense var. melitense (Bryopsida). — Ann. Bot. Fennici 38: 45–46.
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Ghahremani-nejad, F. 2001: Notes on Astragalus sect. Corethrum (Fabaceae), including a new combination. — Ann. Bot. Fennici 38: 47–49.
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Niemelä, T., Wagner, T., Fischer, M. & Dai, Y.C. 2001: Phellopilus gen. nov. and its affinities within Phellinus s. lato and Inonotus s. lato (Basidiomycetes). — Ann. Bot. Fennici 38: 51–62.
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Pitkänen, A. & Grönlund, E. 2001: A 600-year forest fire record in a varved lake sediment (Ristijärvi, Northern Karelia, Eastern Finland). — Ann. Bot. Fennici 38: 63–73.
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Nomenclatural novelties in Ann. Bot. Fennici 38(1): 74.
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Acedo, C. & Llamas, F. 2001: Variation of micromorphological characters of lemma and palea in the genus Bromus (Poaceae). — Ann. Bot. Fennici 38: 1–14.
Micromorphological features of the lemma and palea were investigated for 77 species in the genus Bromus (Poaceae) using scanning electron microscopy. Several micromorphological characters of both long and short cells (cork cells, crown cells, prickles and macrohairs) were observed. All were treated as separate characters, although crown cells, prickles and macrohairs are treated as a single group (exodermic cells) owing to the protrusion of their periclinal wall. The main objectives of this work are to assess the value of the micromorphological typology in systematic studies, and to characterize the six subgenera of Bromus, using micromorphological features of the lemmas and paleas.
Gratani, L. & Bombelli, A. 2001: Differences in leaf traits among Mediterranean broad-leaved evergreen shrubs. — Ann. Bot. Fennici 38: 15–24.
Leaf morphological and physiological traits of the broad-leaved evergreen shrub species Quercus ilex, Phillyrea latifolia, Pistacia lentiscus, Arbutus unedo and Cistus incanus of the Mediterranean maquis were studied. Specific leaf mass (SLM), leaf tissue density (LTD), leaf life-span (LLS) and water use efficiency (WUE) were the most representative key traits resulting from discriminant analysis. Cluster analysis was used to identify the affinity among the species by statistical linkage. Dendrograms show two clusters characterised by a different integration of morphological and physiological leaf traits: Quercus ilex, Phillyrea latifolia and Pistacia lentiscus were in the same cluster, significantly different from that formed by Arbutus unedo and Cistus incanus.
He, X.-L. & Grolle, R. 2001: Xylolejeunea, a new genus of the Lejeuneaceae (Hepaticae) from the Neotropics, Madagascar and the Seychelles. — Ann. Bot. Fennici 38: 25–44.
The genus Trachylejeunea (Spruce) Schiffn. is reviewed and its subgenus Hygrolejeuneopsis R.M. Schust. placed in synonymy of Xylolejeunea X.-L. He & Grolle gen. nov. (Lejeuneaceae, Hepaticae). Four species are recognized in Xylolejeunea: X. aquarius (Spruce) X.-L. He & Grolle comb. nova, X. grolleana (Pócs) X.-L. He & Grolle comb. nova, X. muricella X.-L. He & Grolle sp. nova, and X. crenata (Nees & Mont.) X.-L. He & Grolle comb. nova. Eight species names are proposed as new synonyms. A key to the species is provided. The genus is characterized by the following main features: (1) an almost longitudinal insertion line of the leaf lobe, (2) an ovate to falcate-ovate shape of the leaf lobe with an entire to finely denticulate margin, (3) two transverse rows of conspicuously enlarged and elongate cells at its base, of which the upper one constitutes the adjacently arranged ocelli, (4) a proximal position of the hyaline papilla relative to the slightly curved first lobule tooth, (5) a blunt, distinct or fairly distinct second lobule tooth, often with strongly thickened outer wall, (6) distant underleaves with an almost transverse insertion to the stem, (7) gynoecia with 1 short, pycnolejeuneoid innovation or without innovation, and (8) the equally sharply 5-keeled perianth with double, 1–4 cells wide, irregularly denticulate wings. The relationships between Xylolejeunea and allied genera are discussed. A description, an illustration, and a distribution map is presented for each species of Xylolejeunea.
Mastracci, M. 2001: Taxonomic status of Thamnium cossyrense and T. cossyrense var. melitense (Bryopsida). — Ann. Bot. Fennici 38: 45–46.
Thamnium cossyrense Bott. is synonymized with Scorpiurium sendtneri (Schimp.) M.Fleisch. and Thamnium cossyrense var. melitense Bott. is synonymized with Scorpiurium circinatum (Brid.) M. Fleisch. & Loeske (Brachytheciaceae). An identification key to the three species of Scorpiurium occurring in Europe is provided. Scorpiurium sendtneri is recorded for the first time for France.
Ghahremani-nejad, F. 2001: Notes on Astragalus sect. Corethrum (Fabaceae), including a new combination. — Ann. Bot. Fennici 38: 47–49.
A new combination is proposed in Astragalus L. sect. Corethrum Bunge: A. scoparius Schrenk subsp. intarrensis (Franch.) Ghahremani. The subspecies is endemic to Middle Asia (Kirgistan, Tadzhikistan and Uzbekistan). A list of species of Astragalus sect. Corethrum is provided as well as a note on its phytogeography.
Niemelä, T., Wagner, T., Fischer, M. & Dai, Y.C. 2001: Phellopilus gen. nov. and its affinities within Phellinus s. lato and Inonotus s. lato (Basidiomycetes). — Ann. Bot. Fennici 38: 51–62.
Molecular analysis of a portion of the large ribosomal subunit was performed with Phellinus nigrolimitatus (Romell) Bourd. & Galzin and ten other species in Phellinus Quél. s. lato and Inonotus P. Karst. s. lato in order to establish their generic relationships. The microscopy of P. nigrolimitatus was revised. The species turned out to differ enough to be separated into a new genus, Phellopilus Niemelä, Wagner & Fischer. At the very onset of sporulation the spores are much longer and narrower (proterospores) than later on; this phenomenon is discussed. Morphological and anatomical characters were studied for a somewhat similar species from the Americas, Fomitiporia punctatiformis Murrill (Phellinus punctatiformis (Murrill) Ryvarden); it seems to fit best in the genus Fuscoporia. A new species, Fuscoporia montana Y.C. Dai & Niemelä, is described from Yunnan, China.
Pitkänen, A. & Grönlund, E. 2001: A 600-year forest fire record in a varved lake sediment (Ristijärvi, Northern Karelia, Eastern Finland). — Ann. Bot. Fennici 38: 63–73.
Charcoal particle and pollen influx values in the annually laminated sediment of a boreal forest lake surrounded mostly by mesic soils were used to reconstruct the history of forest fires in Eastern Finland for a 600-year period between 100 BC and AD 500, prior to any significant human influence. Six to seven local fires were detected during this period, at an average interval of 90–115 years. The corresponding fire rotation time is estimated to be 180–230 years. The local fire interval and Picea pollen percentages at the site were of the same magnitude as those recorded at two sites with dry soils in eastern Finland, suggesting that the average fire return interval may have been similar at dry and mesic sites. The intensity of fires was estimated from the declines in influxes of spruce and pine pollen. Pine can survive surficial fires of low intensity, but spruce trees are killed by virtually all fires. The contemporary declines in spruce and pine pollen influxes suggest that about half of the fires were strong ones, causing stand replacement.