Status: Native
Synonyms:
Schistidium teretinervis (Limpricht) Limpricht
Grimmia teretinervis is rather small & inconspicuous for the genus, indeed it is a bit nondescript. It has not been found with sporophytes in North America and thus may be overlooked or not collected. Its overall impression is that of a Schistidium, and indeed it once was placed in Schistidium. The leaves shorter and more ovate at the base toward the bottom of each stem, becoming more elongate and lanceolate distally along stems. Additionally, the hairpoints tend to be absent lower on the stem and present as nubbins or very short hairpoints toward the apex of the stems. At the level of the hand lens, G. teretinervis lacks a clearly characteristic feature. However, at the microscopic level the costal cross-section is round distally-- convex on both sides of the lamina. The lamina itself is bistratose distally. Grimmia teretinervis is found on steeper, drier calcareous substrates.
Many thanks to John Brinda for bringing this ID to our attention! Please click on an image for a larger file.
Grimmia teretinervis, photo Russ Kleinman & Karen Blisard, Eddy Cty., Carlsbad Caverns National Park, Lower Walnut Canyon, April 8, 2013
Grimmia teretinervis, photomicrograph of distal leaf, photo Russ Kleinman & Karen Blisard, Eddy Cty., Carlsbad Caverns National Park, Lower Walnut Canyon, April 8, 2013
Grimmia teretinervis, photomicrograph of distal leaf, photo Russ Kleinman & Karen Blisard, Eddy Cty., Carlsbad Caverns National Park, Lower Walnut Canyon, April 8, 2013
Grimmia teretinervis, photomicrograph of more proximal leaf, photo Russ Kleinman & Karen Blisard, Eddy Cty., Carlsbad Caverns National Park, Lower Walnut Canyon, April 8, 2013
Grimmia teretinervis, photomicrograph of distal portion of wet stem, photo Russ Kleinman & Karen Blisard, Eddy Cty., Carlsbad Caverns National Park, Lower Walnut Canyon, April 8, 2013
Grimmia teretinervis, photomicrograph of leaf cross sections, photo Russ Kleinman & Karen Blisard, Eddy Cty., Carlsbad Caverns National Park, Lower Walnut Canyon, April 8, 2013
Grimmia teretinervis, photomicrograph of leaf cross sections, photo Russ Kleinman & Karen Blisard, Eddy Cty., Carlsbad Caverns National Park, Lower Walnut Canyon, April 8, 2013
Grimmia teretinervis, photomicrograph of leaf cross section, photo Russ Kleinman & Karen Blisard, Eddy Cty., Carlsbad Caverns National Park, Lower Walnut Canyon, April 8, 2013
Grimmia teretinervis, photomicrograph of leaf cross section, photo Russ Kleinman & Karen Blisard, Eddy Cty., Carlsbad Caverns National Park, Lower Walnut Canyon, April 8, 2013
Grimmia teretinervis, photomicrograph of leaf cross section, photo Russ Kleinman & Karen Blisard, Eddy Cty., Carlsbad Caverns National Park, Lower Walnut Canyon, April 8, 2013
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