ISSN 0003-3847
© Finnish Zoological and Botanical Publishing Board 2001

Contents of Volume 38 Number 3, 2001

Akan, H. & Civelek, S. 2001: Astragalus aytatchii (Fabaceae), a new species from Anatolia, Turkey. — Ann. Bot. Fennici 38: 167–170.
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Ekici, M. & Aytaç, Z. 2001: Astragalus dumanii (Fabaceae), a new species from Anatolia, Turkey. — Ann. Bot. Fennici 38: 171–174. sect. Hololeuce Bunge.
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Herrero, A., Aedo, C., Velayos, M. & Viane, R. L. L. 2001: A new species of Asplenium (Aspleniaceae, Pteridophyta) from Equatorial Guinea. — Ann. Bot. Fennici 38: 175–180.
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Jutila, H. 2001: How does grazing by cattle modify the vegetation of coastal grasslands along the Baltic Sea? — Ann. Bot. Fennici 38: 181–200.
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Kotiranta, H. & Penzina, T. 2001: Spongipellis sibirica, comb. nova (Basidiomycetes), and its affinities to the polypore genera Tyromyces, Aurantioporus and Climacocystis. — Ann. Bot. Fennici 38: 201–209.
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Liu, K.-M., Long, C.-L. & Liu, Y.-T. 2001: Burmannia hunanensis (Burmanniaceae), a new species from Hunan, China. — Ann. Bot. Fennici 38: 211–214.
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Mariño, S. I. & Tressens, S. G. 2001: Artificial Neural Networks application in the identification of three species of Rollinia (Annonaceae). — Ann. Bot. Fennici 38: 215–244.
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Moreno, G., Illana, C. & Lizárraga, M. 2001: SEM studies of the Myxomycetes from the Peninsula of Baja California (Mexico), III. Additions. — Ann. Bot. Fennici 38: 225–247.
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Nomenclatural novelties in Ann. Bot. Fennici 38(3): 248.
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Akan, H. & Civelek, S. 2001: Astragalus aytatchii (Fabaceae), a new species from Anatolia, Turkey. — Ann. Bot. Fennici 38: 167–170.

Astragalus aytatchii Akan & Civelek sp. nova (Fabaceae) from middle Anatolia, Turkey, is described and illustrated in line drawings. It is compared with the closely related A. elatus Boiss & Bal. Both species belong to Astragalus sect. Alopecuroidei DC. (= Alopecias Bunge).

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Ekici, M. & Aytaç, Z. 2001: Astragalus dumanii (Fabaceae), a new species from Anatolia, Turkey. — Ann. Bot. Fennici 38: 171–174.

Astragalus dumanii M. Ekici & Aytaç, sp. nova (Fabaceae) from South Anatolia, Turkey, is described and illustrated in line drawings. It is compared with the closely related A. cataonicus Bunge. Both species belong in Astragalus sect. Hololeuce Bunge.

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Herrero, A., Aedo, C., Velayos, M. & Viane, R. L. L. 2001: A new species of Asplenium (Aspleniaceae, Pteridophyta) from Equatorial Guinea. — Ann. Bot. Fennici 38: 175–180.

A new species of Asplenium from Equatorial Guinea, A. carvalhoanum Herrero, Aedo, Velayos & Viane, is described and illustrated. This new species is similar to A. preussii Hieron., which differs in rhizome, scales and in the absence of gemmae on the apical part of the lamina. It is also similar to A. hallei Tard., which differs in frond morphology.

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Jutila, H. 2001: How does grazing by cattle modify the vegetation of coastal grasslands along the Baltic Sea? — Ann. Bot. Fennici 38: 181–200.

The vegetation of four grazed and five ungrazed shore grasslands was studied in seashore and in delta on the southwestern coast of Finland. Ordinations and classifications separated delta plots from seashore plots, which were further divided into reed stand plots, epilittoral plots and geo- and hydrolittoral plots. The partitions reflected flooding stress, moisture conditions, grazing and properties of parent material. Elevation explained the data best. The primary factor in producing the vegetation zonation pattern in these Baltic coastal grasslands is the short-term fluctuation in sea-level. Although grazing was not the most important factor for explaining the variability in the data, its impact on the vegetation was considerable. Phragmites australis was much more common in ungrazed than in grazed plots. It dominated the hydrolittoral, was abundant in geolittoral and existed even in transition zone of the ungrazed transects. In grazed transects Agrostis stolonifera and Eleocharis uniglumis dominated the hydrolittoral. The lower geolittoral was dominated by perennial graminoids. In the middle and upper geolittoral, forbs were more frequent and abundant. In the grazed seashore transects, the lower geolittoral was dominated by Juncus gerardii, while in the ungrazed transects Calamagrostis stricta, Agrostis stolonifera and Juncus gerardii formed the zone together with Phragmites australis. The transition zone in the grazed transects was a narrow drift wall, in the ungrazed transects, however, it was much broader and dominated by tall growing plants. On fine-grained substrate, the epilittoral was dominated by Agrostis capillaris, Carex nigra and Deschampsia cespitosa and on till by Deschampsia flexuosa and Galium verum.

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Kotiranta, H. & Penzina, T. 2001: Spongipellis sibirica, comb. nova (Basidiomycetes), and its affinities to the polypore genera Tyromyces, Aurantioporus and Climacocystis. — Ann. Bot. Fennici 38: 201–209.

The species was recently described as Tyromyces sibiricus Penzina & Ryvarden. The new combination Spongipellis sibirica (Penzina & Ryvarden) Penzina & Kotir. is proposed, based on microscopic characteristics, e.g., thick-walled, cyanophilous spores and the structure of the contextual hyphae. The microscopical details are described and illustrated, and comparisons made with the similar-looking species Aurantioporus fissilis (Berk. & M. A. Curtis) H. Jahn, Climacocystis borealis (Fr.) Kotl. & Pouzar and Spongipellis spumea (Sowerby: Fr.) Pat. The affinities to the genus Tyromyces P. Karsten are briefly discussed; S. sibirica lacks the special, spiny encrustations, characteristic of the species of Tyromyces. The species was earlier known from the type locality only. In this paper it is reported from Siberia, Buryat Rep., Lake Baykal, Russian Far East, Kamchatka and China.

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Liu, K.-M., Long, C.-L. & Liu, Y.-T. 2001: Burmannia hunanensis (Burmanniaceae), a new species from Hunan, China. — Ann. Bot. Fennici 38: 211–214.

Burmannia hunanensis K. M. Liu & C. L. Long, a new species of the Burmanniaceae from Hunan Province, China, is described and illustrated. The morphological characteristics of B. hunanensis and its related species are compared.

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Mariño, S. I. & Tressens, S. G. 2001: Artificial Neural Networks application in the identification of three species of Rollinia (Annonaceae). — Ann. Bot. Fennici 38: 215–244.

Artificial neural networks (ANN) are capable of modelling functional relations between both dependent and independent variables. In this work, we propose the application of ANN as a complementary method of botanical identification which uses vegetative characters. In order to complete this objective, the development of a multilayer neural model to identification for three species of the genus Rollinia (Annonaceae) is presented.

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Moreno, G., Illana, C. & Lizárraga, M. 2001: SEM studies of the Myxomycetes from the Peninsula of Baja California (Mexico), III. Additions. — Ann. Bot. Fennici 38: 225–247.

We present a list of 35 taxa collected in the Peninsula of Baja California. Fourteen of them are new records for Mexico: Comatricha ellae, Craterium obovatum var. dictyosporum, Diderma subincarnatum, Didymium bahiense, D. dubium, D. laxifilum, D. sturgisii, D. trachysporum, Echinostelium colliculosum, Physarum auriscalpium, P. lateritium, P. lividum, Protophysarum phloiogenum and Trichia contorta. Twenty species are new records for the peninsula of Baja California: Badhamia affinis, B. macrocarpa, B. panicea, Comatricha laxa, C. nigra, Cribraria intricata, C. purpurea, C. violacea, Didymium megalosporum, D. melanospermum, D. minus, Echinostelium arboreum, E. minutum, Lamproderma scintillans, Licea kleistobolus, Lycogala epidendrum, L. flavofuscum, Physarum cinereum, P. leucophaeum and P. pusillum. SEM micrographs of the taxa are presented.

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