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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Cyatheaceae: The Scaly Tree Ferns

In ferns, SGS is probably being affected by the life cycle with two free-living life stages. In this context, we are aware that the analysis of SGS without reference to demographic information might fail to observe significant patterns of structuring Soltis et al. To date, few studies of SGS have focused on ferns species, all of which are terrestrial and acaulescent [ Pteris multifida Poir. The two studied populations of A. Sorry, your blog cannot share posts by email.

Alsophila firma (Cyatheaceae) image at

Geostatistical genetic analysis for inferring the dispersal pattern of a partially clonal forma We believe that the spatial aggregation of tree ferns is the probable result of clonal growth and limited spore dispersal. However, they differ from Cyatheaceae by the presence of hairs instead of scales as indumentum Korall et al.

Developmental evidence helps resolve the evolutionary origins of anther appendages in Globba Zingiberaceae. However, the breeding mechanisms e. Sp meanmean Sp statistic across populations. Although we believe this to be unlikely because of the congruency of SGS between plastid SSRs and gapCpdata on additional nuclear loci would be valuable.

Alsophila firma (Baker) D.S. Conant — The Plant List

I, the copyright holder of this work, hereby publish it under the alsiphila license:. This file is made available under the Creative Commons CC0 1. The second site Tlanchinol, Hidalgo: We combined spatial aggregation statistics and spatial genetic autocorrelation analyses using five plastid microsatellites and one nuclear gene to investigate SGS in two populations of the outcrossing tree fern Alsophila firma Cyatheaceae.


Gray Herb Despite the crucial role 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. Further research on the genetics of gametophyte fertilization and embryo development is needed to corroborate this hypothesis.

However, some species are also found in high mountain areas in the tropics at elevations up to m Bystrikova, The first site Huatusco, Veracruz: The program was set to run with the default parameters: We believe this to be unlikely for A.

However, with evermore phylogenetic analyses and data botanists are beginning to alspphila together that main groups or genera within the family.

The alsopuila of points within each ring was maximized by setting the ring width to 2 m, reducing the raggedness of the function. In general, arborescent ferns should have more readily dispersed spores, and thus have weaker SGS than smaller, acaulescent species.

Population structure and gene flow of the Brazilian shrub Helicteres brevispira. Madagascar is an example of this firrma local endemism, the alsophilla has 49 endemic species of scaly tree ferns Janssen et al.

Image attributed to Intermountain Herbarium via intermountainbiota. These tree ferns have gametophytes with multiple archegonia that can be simultaneously fertilized polyembryonycreating an opportunity for the developmental selection of embryos and young sporophytes with the higher levels of heterozygosity Klekowski, Permission granted to reproduce for personal and educational use only.

To estimate how clonal growth affects SGS, we performed autocorrelation analyses using all pairs of sampled individual stems. Sample sites were located in two cloud forest patches in central—eastern Mexico. Due to the lack of single nucleotide polymorphisms, we restricted our analyses to five mononucleotide microsatellites plastid SSRs located within these regions, which were subjected to direct cycle sequencing High Throughput Genomic Unit, University of Washington, Washington, DC, USA.

Hymenophyllopsis look superficially similar to filmy ferns Hymenophyllaceae because of the similar characteristics of the lamina. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong. The following other wikis use this file: Tree ferns exhibit a range of morphological variations and sizes: Email alerts New issue alert. Their tissue is only cells thick with chloroplasts present only in epidermal cells and lacking in alsopjila.


Permutation tests showed that regression slopes were significantly different from zero in all analyses Table 2. New insights from fine-scale spatial genetic structure alsophial in plant populations. Commercial copying, hiring and lending is prohibited. Marginate Scales with Seta found in Alsophila s.

File:Alsophila firma.jpg

This is probably frima to differences in the size of clones i. The extant scaly tree ferns are commonly found in the tropics, from the wet lowlands to mid elevations.

Genetics, phylogenetics, and biogeography: Correlograms of estimated inter-individual kinship R L over distance for plastid haplotypes A, B and nuclear alleles C, D in two studied populations of the tree fern Aksophila firma AH: The alternating life cycle, with two free-living life stages, might impose limits on the effective dispersal of genes within populations, which are not evident from the study of SGS in seed plants.

Using the allele data for each individual i. Higher fine-scale genetic structure in peripheral than in core populations of allsophila long-lived and mixed-mating conifer — eastern white cedar Thuja occidentalis L. Close mobile search navigation Article navigation.

Conversely, in the eusporangiate ferns Psilopsida, Equisetopsida and Marattiaceaeas well as the epidermal daughter cell, a group of adjacent cells become involved in the formation of the firm Sporne, The absence of SGS in D.

The Polypodiales, which are an incredibly diverse group, are thought to be the sister clade to Cyatheales Pryer et al.