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.

Author: Mazuktilar Tolrajas
Country: Trinidad & Tobago
Language: English (Spanish)
Genre: Health and Food
Published (Last): 1 November 2004
Pages: 184
PDF File Size: 19.32 Mb
ePub File Size: 18.24 Mb
ISBN: 700-2-76619-993-1
Downloads: 69858
Price: Free* [*Free Regsitration Required]
Uploader: Fezilkree

Botanical Journal of the Linnean Society, Significant demographic and fine-scale genetic structure in expanding and senescing populations of the terrestrial orchid Cymbidium goeringii Orchidaceae.

Cyathea planadaea remarkable new creeping tree fern from Colombia, South America. Significant SGS was evaluated by testing the regression slope of R L on the logarithm of distance b R with 10 replicates. The absence of SGS in D. However, it is possible that the SGS of A.

File:Alsophila firma.jpg

Clonal growth has been documented in several species of tree ferns, including A. However, the presence of pneumathodes may unite the clade, but it is also found in other leptopsporangiate ferns, and may represent the ancestral plesiomorphic condition dirma this group.

Autogamous allohomoploidy in Alsophila and Nephelea Cyatheaceae: Images above are simplified interpretations of petiole scales for Cyatheaceae, Fig. The tree fern A.


Cyatheaceae: The Scaly Tree Ferns

The timestamp is only as accurate as the clock in the camera, and it may be completely wrong. Summary [ edit ] Description Alsophila firma. The levels of SGS differ between the two analysed populations of A.

Genetic diversity estimates for plastid haplotypes plastid SSRs and nuclear alleles gapCp and statistics of clonal extent in the two studied populations of the tree fern Alsophila firma AH: Accordingly, inbreeding coefficients F IS were not significantly different from zero. Their tissue is only cells thick with chloroplasts present only in epidermal cells and lacking in stomates. Higher fine-scale genetic structure in peripheral than in core populations of a long-lived and mixed-mating conifer — eastern white cedar Thuja occidentalis L.

However, with evermore phylogenetic analyses and data botanists are beginning to piece together that main groups or genera within the family. Observations on the reproductive biology of Alsophila species and hybrids Cyatheaceae. Commonly known as the scaly tree ferns, Cyatheaceae are a clade of ca.

This assessment, however, would be limited by the difficulty of studying natural population of gametophytes, mainly resulting from highly similar gametophyte morphologies across species Conant, A radioisotope technique to measure spore dispersal of the tree fern Cyathea arbores Sm.

American Journal of Botany91, The program was set to run with the default parameters: New combinations and an overview of Alsophlla subg. Abaxial scales of Cyathea capensis Scales: The two studied populations of A. The present analyses suggest that fern species appear to have unexpectedly firm levels of SGS.


Alsophila firma | CITES

These analyses apsophila carried out on the total number of individual stems AH: In fern species with apogamy, such as C. The location of individual stems was carefully mapped using the distance m and compass bearings between individuals, thus obtaining the relative spatial coordinates of each individual. Only the medium copy could be successfully aligned.

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.

Although factors affecting SGS are well understood, most studies have almost exclusively focused on seed plants, especially angiosperms. 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.

Sorry, your blog cannot share posts by email.