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13 results for “Heteranthera”
North Temperate Lakes site, station Trout Lake, study of plant biomass of Heteranthera dubia in units of gramsPerSquareMeter 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 North Temperate Lakes (NTL) contains plant biomass of Heteranthera dubia measurements in gramsPerSquareMeter units and were aggregated to a yearly timescale.
Data from: Two new synonyms in Heteranthera (Pontederiaceae, Commelinales)
Hydrothrix and Scholleropsis, two segregate monospecific genera placed within the Heteranthera s.l. clade, are here transferred to Heteranthera based on phylogenetic and morphological data. A brief discussion on the morphology and affinities of Heteranthera s.l. is given, along with the designation of lectotypes for the two new transfers.
FIGURE 2 in Heteranthera yucatana (Pontederiaceae), a new, threatened species from the Mexican Yucatan Peninsula
FIGURE 2. Heteranthera (Pontederiaceae) from the Mexican Yucatan Peninsula. A–F. H. yucatana. A-B. Calichal, natural habit. C. Plant with inflorescences and flowers. D. Inflorescence. E–F. Flower. G–H. Heteranthera limosa. G. Flowers, H. Natural habitat. (C–F. H. yucatana. G. Carnevali & J.L. Tapia 6262, based upon the type collection, CICY; G–H. Heteranthera limosa. Photos: A. José R. Grande A., C–D. Germán Carnevali. E. Débora Carnevali Ramírez. B, F, G: Claudia Ramírez Díaz.
FIGURE 3. Borreria heteranthera E.L. Cabral & Sobrado. A. Habit. B. Stipular sheath. C. Terminal glomerule. D in Intraspecific variation of insertion/length of stamens in homostylous flowers of a new species and three other species of Borreria: an unusual case in Rubiaceae
FIGURE 3. Borreria heteranthera E.L. Cabral & Sobrado. A. Habit. B. Stipular sheath. C. Terminal glomerule. D. Detail of external bract. E. Detail of internal bract. F. Flower. G. Hypanthium, style and stigma. H. Open corolla. I. Capsule. J. Internal view of mericarp to display septicidal dehiscence. K. Ventral view of seed. L. Dorsal view of seed. (A, B, F–H from P. L. Viana, L. M. Versieux, L. C. Garcia, V. T. Giorni, L. V. C. Silva & D. S. Silva 4094; C, I–L from A. J. Arruda, P. L. Viana, F. M. Santos, P. B. Mayer, T. J. Battituci & L. J. Arruda 909; D, E from A. J. Arruda, F. M. Santos, L. J. Arruda & T. J. Battituci 1099). Illustration by L. Simón.
FIGURE 4. Borreria heteranthera E.L. Cabral & Sobrado. A. Habit. B in Intraspecific variation of insertion/length of stamens in homostylous flowers of a new species and three other species of Borreria: an unusual case in Rubiaceae
FIGURE 4. Borreria heteranthera E.L. Cabral & Sobrado. A. Habit. B. Detail of terminal glomerule. C. Flowers. Photographs by A. J. Arruda.
Data from: Two new synonyms in Heteranthera (Pontederiaceae, Commelinales)
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Figure 3 from: Pellegrini MOO, Horn CN (2017) Two peculiar new species of Heteranthera Ruiz & Pavón (Pontederiaceae) from Brazil, with notes on inflorescence architecture in the family. PhytoKeys 82: 35-56. https://doi.org/10.3897/phytokeys.82.13752
Figure 3 - Distribution map. ■ Heteranthera catharinensis C.N.Horn & M.Pell. ● H. pumila M.Pell. & C.N.Horn. Green– Paraná watershed; Yellow– Uruguay watershed; Red– Southeastern Atlantic watershed; following ANA – Agência Nacional de Águas (2002).
Figure 2 from: Pellegrini MOO, Horn CN (2017) Two peculiar new species of Heteranthera Ruiz & Pavón (Pontederiaceae) from Brazil, with notes on inflorescence architecture in the family. PhytoKeys 82: 35-56. https://doi.org/10.3897/phytokeys.82.13752
Figure 2 - Line drawing of Heteranthera catharinensis C.N.Horn & M.Pell. A Detail of the leaf blade B Detail of the apex of the stem, showing the ligule and an inflorescence at anthesis C Detail of the basal bract, showing the spatulate-mucronate apex D Glandular hair from the cincinnus axis and floral tube E Dissected perianth lobes, showing the 5+1 arrangement F Lateral stamen G Uniseriate hair from the lateral stamen H Central stamen I Gynoecium, showing the glabrous style and unevenly trilobate stigma. Illustration by M.O.O. Pellegrini, based on the paratype (Smith & Reitz 9103, US).
Figure 6 from: Pellegrini MOO, Horn CN (2017) Two peculiar new species of Heteranthera Ruiz & Pavón (Pontederiaceae) from Brazil, with notes on inflorescence architecture in the family. PhytoKeys 82: 35-56. https://doi.org/10.3897/phytokeys.82.13752
Figure 6 - Heteranthera reniformis Ruiz & Pavón complex. A–B H. multiflora (Griseb.) C.N.Horn s.l., from Missouri, USA: A Habit B Inflorescence C–D H. peduncularis Benth., from Michoacán, Mexico: C Habit D Inflorescence E–F H. reniformis Ruiz & Pavón s.s., from Bahia state, Brazil: E Habit F Inflorescence. Photos A–B by Steve R. Turner, C–D by C.N. Horn, and E–F by M.O.O. Pellegrini
Figure 1 from: Pellegrini MOO, Horn CN (2017) Two peculiar new species of Heteranthera Ruiz & Pavón (Pontederiaceae) from Brazil, with notes on inflorescence architecture in the family. PhytoKeys 82: 35-56. https://doi.org/10.3897/phytokeys.82.13752
Figure 1 - Holotype of Heteranthera catharinensis C.N.Horn & M.Pell. Image courtesy of the Smithsonian Institution, NMNH, US herbarium.
Figure 5 from: Pellegrini MOO, Horn CN (2017) Two peculiar new species of Heteranthera Ruiz & Pavón (Pontederiaceae) from Brazil, with notes on inflorescence architecture in the family. PhytoKeys 82: 35-56. https://doi.org/10.3897/phytokeys.82.13752
Figure 5 - Line drawing of Heteranthera pumila M.Pell. & C.N.Horn. A Habit B Detail of the apex of the stem, showing a petiolate leaf, the ligule and a pre-anthesis 2-flowered inflorescence C Glandular hair from the inflorescence, perianth tube and lobes D Dissected perianth lobes, showing the 5+1 arrangement E Lateral stamen. F Uniseriate hair from the lateral stamen G Central stamen H Eglandular hair from the central stamen I Gynoecium, showing the stigma J Eglandular hair from the style K Detail of the inconspicuously winged seed, showing the persistent funiculus with raphid crystals. Illustration by M.O.O. Pellegrini, based on the holotype.
Figure 4 from: Pellegrini MOO, Horn CN (2017) Two peculiar new species of Heteranthera Ruiz & Pavón (Pontederiaceae) from Brazil, with notes on inflorescence architecture in the family. PhytoKeys 82: 35-56. https://doi.org/10.3897/phytokeys.82.13752
Figure 4 - Field photos of Heteranthera pumila M.Pell. & C.N.Horn. A Bog at the Paranapanema river, Piraju, São Paulo, Brazil B Habit, showing the dense subpopulation at the muddy shore of the bog C Leaf D Detail of the apex of the stem, showing the ligule and the inflorescence E Detail of the inflorescence, showing the glandular hairs at the peduncle, base of the basal bract and cincinnus F Front view of the flower, the shape of the perianth lobes and the color of the nectar guide. Photographs A–E by M.O.O. Pellegrini, F by V. Bittrich.
FIGURE 1 in Heteranthera yucatana (Pontederiaceae), a new, threatened species from the Mexican Yucatan Peninsula
FIGURE 1. Distribution of the species of Heteranthera in the Mexican Yucatan peninsula: Heteranthera yucatana (blue squares), H. dubia (green squares), and H. limosa (red squares).
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