Status: Native
Synonyms:
Marchantia quadrata Scop.
Preissia quadrata is quite similar to Marchantia polymorpha and in fact is still
sometimes placed in the genus Marchantia. P. quadrata differs from Marchantia in
the absence of gemmae cups. The thalli of P. quadrata are pale green and have purple margins. We will be supplementing the pix here with ones of fresh specimens this spring.
Many thanks to the University of Colorado and Dina Clark for loaning us this specimen which was collected by John R. Crutchfield in 1965.
Please click on an image for a larger file.
Preissia quadrata, photo Russ Kleinman & Karen Blisard June 28 2022, specimen collected by John R. Crutchfield, Taos County, Carson National Forest, Beaver Lake, August 3, 1965
Preissia quadrata, closeup of thallus, photo Russ Kleinman & Karen Blisard June 28 2022, specimen collected by John R. Crutchfield, Taos County, Carson National Forest, Beaver Lake, August 3, 1965
Preissia quadrata, closeup of thallus, photo Russ Kleinman & Karen Blisard June 28 2022, specimen collected by John R. Crutchfield, Taos County, Carson National Forest, Beaver Lake, August 3, 1965
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