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Biotic Interactions (GloBI) · NCBI – National Center for Biotechnology Information. Alsophila firma. Open Interactive Map. Alsophila firma image. Click to Display. Brief summary. No one has contributed a brief summary to this page yet. Explore what EOL knows about Alsophila firma. Add a brief summary to this page. Alsophila firma (Baker) D.S. Conant is an accepted name. This name is the accepted name of a species in the genus Alsophila (family Cyatheaceae). The record.

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The program was set to run with the default parameters: Despite the crucial alsohpila of propagule dispersal, SGS in plants is highly dependent on other demographic and biological factors, such as the extent and frequency of asexual reproduction van Rossum et al.

Phylogeny and evolution of ferns Monilophytes with a focus on the early leptosporangiate divergences.

Cyathea planadaea remarkable new creeping tree fern from Colombia, South America. Kinship coefficients were computed for 20 distance intervals maximum distance in metres that were arbitrarily defined to maximize the number of pairwise comparisons.

Alsophila firma ·

Marginal scales of Dicksonia arborescens Scale: However, they differ from Cyatheaceae by the presence of hairs instead of scales as indumentum Korall et al. Therefore, it is important to consider the frequency of clonality to make reasonable comparisons of SGS between species van Rossum et al.


Therefore, the strong spatial aggregation observed in the two populations of A. In this life cycle, meiosis and fertilization occur in different plants alspphila dispersal is mainly achieved through propagules spores that develop prior to fertilization.

This is probably related to differences in the size of clones i. The classification of the Cyatheaceae. Cyathea brownii ; 2B: Complete chloroplast genome sequence of a tree fern Alsophila spinulosa: Reconsideration alsohpila Alsophila odonelliana Cyatheaceaean Andean tree fern.

About Chris Reilly I am a botanist who is particularly interested in the vascular and lower plants of the British Isles. It furthers the University’s objective of excellence in research, scholarship, and education by publishing worldwide. Conform scale found in Sphaeropteris showing cells of equal size and orientation; 4B: Psilopsida; Equisetopsida; Marattiopsida; Polypodiopsida, which include 11 orders, and 37 families with ca.

Species with a high frequency of asexual reproduction, such as the apogamous C. In particular, asexual propagation can effectively increase SGS at short distances Alberto et al. SGS in ferns appears to be higher than in most seed plants analysed to date.

The O r function describes the expected number of points stems at a distance r from an arbitrary point. To identify individual stems produced by clonal reproduction, we estimated the probability that two individuals share the same genomic combination plastid SSR haplotype and nuclear alleles by sexual reproduction p gen.

Leave a Reply Cancel reply. Dicksoniaceae and Cibotium ca.

Population genetics theory predicts that in sexual species with restricted dispersal, a patchy distribution of genotypes will quickly develop in populations Loiselle et al. Alsophila was reclassified to include ca. We assessed how the observed patterns compare with those estimated for other ferns and seed plants.


Alsophila firma

Gray Herb Botanical Journal of the Linnean Society, The slsophila of clones occurring more than twice was greater in ATL than in AH, where the bigger clones comprised six and nine individual stems, respectively Supporting Information Fig. Furthermore, the results of two of these studies are not conclusive as to SGS in fern populations. Many fern species have developed pre-zygotic mechanisms to promote outcrossing e.

Given the numbers of nuclear markers used, a low power to detect sexually produced identical genotypes is possible, especially in AH, where there is a single most common nuclear gapCp-M allele Supporting Information Table S2.

Fern spores disperse and develop into free-living gametophytes prior to fertilization, opening the possibility for gametophytic selfing Klekowski ; Page, For each individual stem, products from independent rounds of amplification were sequenced using forward and reverse primers separately.

Spatial autocorrelation analysis of individual multiallele and multilocus genetic structure. Thus, the genetic patterns of random mating observed in mature fern populations would be the end result of a selective process against homozygous individuals Soltis et al.