Status: Native
Synonyms:
Polytrichastrum longisetum (Bridel) G.L. Smith
Polytrichum longisetum has a sheathing base and a leaf margin that only slightly folds inward over the lamellae on the costa. The margin of the leaf is serrate. The lamellae are entire, with marginal (topmost) cells that are ovate but evenly thickened. The median sheath cells are rectangular and 3-5:1 in length. So far, this species is known from one recent collection at high elevation.
Please click on an image for a larger file.
Polytrichum longisetum, collection by R.C. Sivinski (ID by Kelly Allred, August 2023), Rio Arriba County, Sangre de Cristo Mountains, glacial cirque just above N Fork Rio Quemado Falls and below N Truchas Peak, on igneous rock at edge of wet meadow, 11,320 feet, August 19, 2023; photos by Kelly Allred, August 28, 2023
Polytrichum longisetum, stems, collection by R.C. Sivinski (ID by Kelly Allred, August 2023), Rio Arriba County, Sangre de Cristo Mountains, glacial cirque just above N Fork Rio Quemado Falls and below N Truchas Peak, on igneous rock at edge of wet meadow, 11,320 feet, August 19, 2023; photos by Kelly Allred, August 28, 2023
Polytrichum longisetum, photomicrograph of leaf, collection by R.C. Sivinski (ID by Kelly Allred, August 2023), Rio Arriba County, Sangre de Cristo Mountains, glacial cirque just above N Fork Rio Quemado Falls and below N Truchas Peak, on igneous rock at edge of wet meadow, 11,320 feet, August 19, 2023; photos by Kelly Allred, August 28, 2023
Polytrichum longisetum, photomicrograph of leaf margin, collection by R.C. Sivinski (ID by Kelly Allred, August 2023), Rio Arriba County, Sangre de Cristo Mountains, glacial cirque just above N Fork Rio Quemado Falls and below N Truchas Peak, on igneous rock at edge of wet meadow, 11,320 feet, August 19, 2023; photos by Kelly Allred, August 28, 2023
Polytrichum longisetum, photomicrograph of leaf base, collection by R.C. Sivinski (ID by Kelly Allred, August 2023), Rio Arriba County, Sangre de Cristo Mountains, glacial cirque just above N Fork Rio Quemado Falls and below N Truchas Peak, on igneous rock at edge of wet meadow, 11,320 feet, August 19, 2023; photos by Kelly Allred, August 28, 2023
Polytrichum longisetum, photomicrograph of medial leaf sheath cells, collection by R.C. Sivinski (ID by Kelly Allred, August 2023), Rio Arriba County, Sangre de Cristo Mountains, glacial cirque just above N Fork Rio Quemado Falls and below N Truchas Peak, on igneous rock at edge of wet meadow, 11,320 feet, August 19, 2023; photos by Kelly Allred, August 28, 2023
Polytrichum longisetum, photomicrograph of capsule, collection by R.C. Sivinski (ID by Kelly Allred, August 2023), Rio Arriba County, Sangre de Cristo Mountains, glacial cirque just above N Fork Rio Quemado Falls and below N Truchas Peak, on igneous rock at edge of wet meadow, 11,320 feet, August 19, 2023; photos by Kelly Allred, August 28, 2023
Polytrichum longisetum, photomicrograph of leaf cross section, collection by R.C. Sivinski (ID by Kelly Allred, August 2023), Rio Arriba County, Sangre de Cristo Mountains, glacial cirque just above N Fork Rio Quemado Falls and below N Truchas Peak, on igneous rock at edgen of wet meadow, 11,320 feet, August 19, 2023; photos by Kelly Allred, August 28, 2023
Polytrichum longisetum, photomicrograph of leaf cross section, collection by R.C. Sivinski (ID by Kelly Allred, August 2023), Rio Arriba County, Sangre de Cristo Mountains, glacial cirque just above N Fork Rio Quemado Falls and below N Truchas Peak, on igneous rock at edge of wet meadow, 11,320 feet, August 19, 2023; photos by Kelly Allred, August 28, 2023
Polytrichum longisetum, photomicrograph of cross section of leaf margin, collection by R.C. Sivinski (ID by Kelly Allred, August 2023), Rio Arriba County, Sangre de Cristo Mountains, glacial cirque just above N Fork Rio Quemado Falls and below N Truchas Peak, on igneous rock at edge of wet meadow, 11,320 feet, August 19, 2023; photos by Kelly Allred, August 28, 2023
Polytrichum longisetum, photomicrograph of lamellae, collection by R.C. Sivinski (ID by Kelly Allred, August 2023), Rio Arriba County, Sangre de Cristo Mountains, glacial cirque just above N Fork Rio Quemado Falls and below N Truchas Peak, on igneous rock at edge of wet meadow, 11,320 feet, August 19, 2023; photos by Kelly Allred, August 28, 2023
Back to the Index