Status: Native
Synonyms:
None
Ptychomitrium serratum, like P. sinense is an arid lower elevation acrocarpous moss.
The lanceolate leaves have cells that are not papillose, bulging or prorate.
The cells are smooth and quadrate. The base is not sheathing.
The most striking features of both of the species are the curled/circinate appearance when
dry and the multiple bistratose streaks on the lamina. These streaks appear as dark green
markings against a lighter green background. The main difference between the two species is that
the leaf margin of Ptychomitrium serratum is strongly toothed while the margin of
P. sinense is entire.
Many thanks to the University of Colorado Herbarium (COLO), Erin Tripp & Dina Clark for permitting us
to photograph this specimen.
Please click on an image for a larger file.
Ptychomitrium serratum, collection R.D. Worthington (ID W.A. Weber 2010), Eddy County, Guadalupe Mtns, FR 540 in side canyon of Lower Fork Big Canyon, on limestone boulder, September 6, 2010; photos by Russ Kleinman, Kelly Allred, Karen Blisard, Stacey Anderson and Ron Wittmann, January 19, 2023
Ptychomitrium serratum, photomicrograph of leaf, collection R.D. Worthington (ID W.A. Weber 2010), Eddy County, Guadalupe Mtns, FR 540 in side canyon of Lower Fork Big Canyon, on limestone boulder, September 6, 2010; photos by Russ Kleinman, Kelly Allred, Karen Blisard, Stacey Anderson and Ron Wittmann, January 19, 2023
Ptychomitrium serratum, photomicrograph of leaf apex, collection R.D. Worthington (ID W.A. Weber 2010), Eddy County, Guadalupe Mtns, FR 540 in side canyon of Lower Fork Big Canyon, on limestone boulder, September 6, 2010; photos by Russ Kleinman, Kelly Allred, Karen Blisard, Stacey Anderson and Ron Wittmann, January 19, 2023
Ptychomitrium serratum, photomicrograph of mid leaf, collection R.D. Worthington (ID W.A. Weber 2010), Eddy County, Guadalupe Mtns, FR 540 in side canyon of Lower Fork Big Canyon, on limestone boulder, September 6, 2010; photos by Russ Kleinman, Kelly Allred, Karen Blisard, Stacey Anderson and Ron Wittmann, January 19, 2023
Ptychomitrium serratum, photomicrograph of lamina highlighting multistratose streaks, collection R.D. Worthington (ID W.A. Weber 2010), Eddy County, Guadalupe Mtns, FR 540 in side canyon of Lower Fork Big Canyon, on limestone boulder, September 6, 2010; photos by Russ Kleinman, Kelly Allred, Karen Blisard, Stacey Anderson and Ron Wittmann, January 19, 2023
Ptychomitrium serratum, photomicrograph of capsule, collection R.D. Worthington (ID W.A. Weber 2010), Eddy County, Guadalupe Mtns, FR 540 in side canyon of Lower Fork Big Canyon, on limestone boulder, September 6, 2010; photos by Russ Kleinman, Kelly Allred, Karen Blisard, Stacey Anderson and Ron Wittmann, January 19, 2023
Ptychomitrium serratum, photomicrograph of leaf cross section, collection R.D. Worthington (ID W.A. Weber 2010), Eddy County, Guadalupe Mtns, FR 540 in side canyon of Lower Fork Big Canyon, on limestone boulder, September 6, 2010; photos by Russ Kleinman, Kelly Allred, Karen Blisard, Stacey Anderson and Ron Wittmann, January 19, 2023
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