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240 results for “Selaginella”
Selaginella selaginoides (L.) Link (BR0000011027157)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Selaginella kraussiana (Kunze) A.Braun (BR0000024921879)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Selaginella sp. (BR0000025600032V)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Selaginella kraussiana (Kunze) A.Braun (BR0000006905422)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Selaginella helvetica (L.) Spring (BR0000011026433)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Data from: The role of spore size in the global pattern of co-occurrence among Selaginella species
Aim: Separation of regeneration niches may promote coexistence among closely related plant species, but there is little evidence that regeneration traits affect species ranges at large geographic scales. Here we address patterns of co-occurrence within the genus Selaginella, an ancient lineage of free-sporing, heterosporous, vascular plants. Specifically, we ask whether differences between species in spore size are associated with the extent of overlap in their geographic ranges, a measure of opportunity for ecological interaction. Taxon: Selaginella (Selaginellaceae: Lycopodiales) Methods: We used quantile regression to examine the relationship of spore size ratios (pairwise ratios for megaspores and microspores of co-occurring species) to the area of range overlap and to latitude for a worldwide sample of 112 Selaginella species. Phylogenetically informed tests of statistical significance were used for each percentile relationship examined in the quantile regressions. Results: Large pairwise disparities in megaspore sizes were significantly associated with large range overlap. Disparities also tended to be larger at low latitudes. Microspore size differences, in contrast, were unrelated to shared range area or latitude. Main conclusion: Megaspore size appears to affect coexistence at a broad regional scale among Selaginella species, in at least some cases. The pattern is consistent with some degree of competitive structuring of size-related aspects of dispersal and establishment of propagules among some co-occurring species. Habitat complexity, such as open microsites within otherwise closed and shaded vegetation, seems likely to promote reproductive niche separation and may account for the latitudinal structure in Selaginella spore sizes.
Fig. 3 in Selaginella subvaginata (Selaginellaceae), a new spikemoss from China
Fig. 3. Distribution of Selaginella subvaginata X.C. Zhang & Shalimov.
Data from: The role of spore size in the global pattern of co-occurrence among Selaginella species
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Niwot Ridge site, station Dry meadow plots at Saddle site, study of aboveground net primary productivity of Selaginella densa in units of gramsPerMeterSquaredPerYear on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Niwot Ridge (NWT) contains aboveground net primary productivity of Selaginella densa measurements in gramsPerMeterSquaredPerYear units and were aggregated to a yearly timescale.
Niwot Ridge site, station Fellfield plots at Saddle site, study of aboveground net primary productivity of Selaginella densa in units of gramsPerMeterSquaredPerYear on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Niwot Ridge (NWT) contains aboveground net primary productivity of Selaginella densa measurements in gramsPerMeterSquaredPerYear units and were aggregated to a yearly timescale.
Niwot Ridge site, station Moist meadow plots at Saddle site, study of aboveground net primary productivity of Selaginella densa in units of gramsPerMeterSquaredPerYear on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Niwot Ridge (NWT) contains aboveground net primary productivity of Selaginella densa measurements in gramsPerMeterSquaredPerYear units and were aggregated to a yearly timescale.
Niwot Ridge site, station Snowbed plots at Saddle site, study of aboveground net primary productivity of Selaginella densa in units of gramsPerMeterSquaredPerYear on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Niwot Ridge (NWT) contains aboveground net primary productivity of Selaginella densa measurements in gramsPerMeterSquaredPerYear units and were aggregated to a yearly timescale.
Niwot Ridge site, station Wet meadow plots at Saddle site, study of aboveground net primary productivity of Selaginella densa in units of gramsPerMeterSquaredPerYear on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Niwot Ridge (NWT) contains aboveground net primary productivity of Selaginella densa measurements in gramsPerMeterSquaredPerYear units and were aggregated to a yearly timescale.
H. J. Andrews Experimental Forest site, station Andrews Watershed 1, study of plant cover of Selaginella wallacei (Wallace's spikemoss) in units of percent on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from H. J. Andrews Experimental Forest (AND) contains plant cover of Selaginella wallacei (Wallace's spikemoss) measurements in percent units and were aggregated to a yearly timescale.
FIGURE 1 in Lectotypification of Selaginella tenuissima and S. papagaiensis (Selaginellaceae) with the description of S. monticola
FIGURE 1. SEM micrographs of stem sections, leaves, and strobilus of Selaginella monticola (Salino 2980, PMA). A. Upper surface of stem. B. Upper surface of median leaves; note stomata along midribs and on inner half of laminae (a), and marginal, elongate, straightwalled and papillate cells (b). C. Close-up of median leaf inner half of lamina, upper surface; note stomata (a), and marginal, elongate, straight-walled and papillate cells (b). D-1. Close-up of portion of outer half of median leaf, upper surface; note papillate, roundish to quadrangular cells, marginal, elongate, straight-walled and papillate cells (b), and marginal cilia. D-2. Upper surface of strobilus; note stomata (a) on inner half of sporophylls laminae, and marginal, elongate, straight-walled and papillate cells (b). E. Lower surface of stem section; note axillary rhizophores. F. Lower surface of lateral leaf. G. Close-up distal portion and apex of lateral leaf, lower surface; note stomata along midrib, elongate, sinuate-walled cells, and elongate, papillate cells. H. Close-up of proximal portion and base of lateral leaf, lower surface; note stomata along midrib, elongate, sinuate-walled cells, and elongate, papillate cells.
FIGURE 4 in Lectotypification of Selaginella tenuissima and S. papagaiensis (Selaginellaceae) with the description of S. monticola
FIGURE 4. Image of specimen of Selaginella tenuissima (Glaziou 4499, P [P00044826]); note label lacking specific information included in protologue of the species. A. Close-up of upper surface of stem. B. Close-up of median leaves, upper surface. C. Close-up of strobilus; note white megaspore and sporophylls. Original images provided by and reproduced with permission of the vascular plants collections (P) of the Muséum national d'Histoire naturelle, Paris (France).
FIGURE 3 in Lectotypification of Selaginella tenuissima and S. papagaiensis (Selaginellaceae) with the description of S. monticola
FIGURE 3. Lectotype specimen of Selaginella tenuissima (Glaziou 4499, P [P00573924]). A. Close-up of characteristic label of Glaziou's herbarium with his handwriting, including specific information on type locality as in protologue. Original image provided by and reproduced with permission of the vascular plants collections (P) of the Muséum national d'Histoire naturelle, Paris (France).
FIGURE 2 in Lectotypification of Selaginella tenuissima and S. papagaiensis (Selaginellaceae) with the description of S. monticola
FIGURE 2. SEM micrographs of stem section and leaves of Selaginella tenuissima (Brade 9662, R). A. Upper surface of stem. B. Upper surface of median leaves. C. Close-up of apex of median leaf. D. Close-up of distal portion of inner half of median leaf lamina, upper surface. E. Lower surfaces of lateral leaf and of proximal portion of median leaf outer half; note marginal stomata (a). F. Close-up of proximal portion and margin of acroscopic half of lateral leaf lamina, lower surface.
FIGURE 5 in Lectotypification of Selaginella tenuissima and S. papagaiensis (Selaginellaceae) with the description of S. monticola
FIGURE 5. Image of specimen of Selaginella tenuissima (Glaziou 4499, C. [C10020554]); note label lacking specific information included in protologue of the species. Original image provided by and reproduced with permission of the Natural History Museum of Denmark.
FIGURE 2. A–I. Selaginella chuweimingii.—A. Habitat. B. Habit.—C in Selaginella chuweimingii (Selaginellaceae) sp. nov. from Yunnan, China
FIGURE 2. A–I. Selaginella chuweimingii.—A. Habitat. B. Habit.—C. Dorsal side of ventral and dorsal leaves.—D. The ventral side of ventral and axillary leaves.—E. Strobili.—F–I. SEM micrographs of megaspore and microspore.—F & G. Megaspore (G. Surface structure of megaspore).—H & I. Microspore.—J–M. SEM micrographs of megaspore and microspore of S. sinensis.—J & K. Megaspore (K. Surface structure of megaspore).—M & L. Microspore (Scale bars:—A & F. 200 μm; G & K. 10 μm; H, I, L & M. 20 μm). Materials of spores of S. chuweimingii are collected from Yunnan, China (Chu 1313, PYU), and S. sinensis from Hebei, China (Chu & Xia 23298, PYU).
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