Showing papers on "Dryopteris published in 2004"
TL;DR: Lower vulnerability of D. carthusiana to competition, compared to D. expansa and D. dilatata, may explain the higher regional and local abundance of the former and the rarity of this species in Estonia could rather be explained by the impact of climatic factors.
Abstract: Question: Do different competitive abilities of three fern species explain their different regional abundances? Location: Estonia, Europe. Methods: The factorial pot experiment, in which single individuals of three fern species were grown in natural soil with 0, 2, 4, and 8 neighbouring individuals of Deschampsia flexuosa. Results: The response patterns of different biomass fractions and morphological parameters of fern species were similar to each other. The diploid D. expansa was the most vulnerable to competition, while tetraploid D. carthusiana and D. dilatata were more tolerant. D. carthusiana allocated relatively more to below-ground parts than the other two species and allocation to roots increased when neighbour density increased. For D. expansa and D. dilatata, allocation to below-ground parts decreased at high neighbour density, while in D. dilatata also the relative length of the stipe increased. Thus, the response of D. carthusiana corresponds to a ‘persistence type’ and that of D. di...
26 citations
TL;DR: Three new species of Dryopteris, D. caperata J.P. Roux from Sao Tome and D. aurantiaca J.C. cicatricata from Annobon and D.'souza-Bouchut et al. are described, appear to be local endemics in the Gulf of Guinea.
Abstract: Three new species of Dryopteris, D. cicatricata J.P. Roux and D. caperata J.P. Roux from Sao Tome and D. aurantiaca J.P. Roux from Annobon are described. All three taxa appear to be local endemics. A key to the Dryopteris species occurring on the islands in the Gulf of Guinea is provided.
3 citations
TL;DR: DRYOPTERIS GORGONEA (PTEROPSIDA: DRYOPterIDACEAE), a new SPECIES from the Cape Verde Islands, is described.
Abstract: DRYOPTERIS GORGONEA (PTEROPSIDA: DRYOPTERIDACEAE), A NEW SPECIES FROM THE CAPE VERDE ISLANDS
2 citations
TL;DR: A new SPECIES from TROPICAL EAST AFRICA is identified and described as Dryopteris filipaleata, a new species from north-east Africa.
Abstract: DRYOPTERIS FILIPALEATA (PTEROPSIDA: DRYOPTERIDACEAE). A NEW SPECIES FROM TROPICAL EAST AFRICA
2 citations
Journal Article•
TL;DR: Fifteen species of pteridophytes are recorded for the first time from Hainan Island.
Abstract: Fifteen species of pteridophytes are recorded for the first time from Hainan Island. They are Aleuritopteris squamosa, Allantodia deoderleinii, Allantodia virescens, Antrophyum formosanum, Asplenium sampsonii, Botrychium daucifolium, Dryopteris fuscipes, Dryopteris pacifica, Lindsaea javanensis, Loxogramme assimilis, Lygodium subareolatum, Pteris longipes, Pteris longipinnula, Selaginella braunii and Selaginella repanda. So far, some 450 pteridophyte taxa are known to grow in Hainan Island.
2 citations
TL;DR: Rare fern Dryopteris gamblei re-discovered in Garhwal Himalayas after 121 years.
Abstract: The paper presents an account of a rare fern Dryopteris gamblei (Hope) C. Chr. (Dryopteridaceae) re-reported from Garhwal Hills after a gap of 121 years (Gamble and Mackinnon, 1881, vide Hope). Previously it was reported from Tehri Garhwal and Jaunsar, the West Garhwal but during recent exploration of Garhwal Himalayas it is been collected from Chamoli and Rudraprayag Districts, the Eastern Garhwal.