Vascular Plants of the Gila Wilderness

Family: Rhabdoweisiaceae, formerly Dicranaceae

Status: Native

Synonyms:
Cynodontium polycarpon var. tenellum Schimp.
Oncophorus polycarpos subsp. tenellus (Schimp.) Kindb.
Oncophorus tenellus (Schimp.) R.S. Williams

Cynodontium tenellum has a narrow costa, one-stratose alar cells and is crisped when dry. The capsule is distinctly ribbed. The leaf margins are 2-stratose distally. The distal cells appear somewhat mammillose, but it is not distinct on cross section.

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.

Cynodontium tenellum, collection and ID by Guy R. Brassard, Canada, Labrador, Kaipokok Bay, SE shore opposite Sister Islands, on granitic cliff, July 30, 1976; photos by Russ Kleinman & Karen Blisard, February 26, 2023

Cynodontium tenellum, photomicrograph of habit, collection and ID by Guy R. Brassard, Canada, Labrador, Kaipokok Bay, SE shore opposite Sister Islands, on granitic cliff, July 30, 1976; photos by Russ Kleinman & Karen Blisard, February 26, 2023

Cynodontium tenellum, photomicrograph of reproductive stem, collection and ID by Guy R. Brassard, Canada, Labrador, Kaipokok Bay, SE shore opposite Sister Islands, on granitic cliff, July 30, 1976; photos by Russ Kleinman & Karen Blisard, February 26, 2023

Cynodontium tenellum, dark field photomicrograph of capsule, collection and ID by Guy R. Brassard, Canada, Labrador, Kaipokok Bay, SE shore opposite Sister Islands, on granitic cliff, July 30, 1976; photos by Russ Kleinman & Karen Blisard, February 26, 2023

Cynodontium tenellum, photomicrograph of leaf, collection and ID by Guy R. Brassard, Canada, Labrador, Kaipokok Bay, SE shore opposite Sister Islands, on granitic cliff, July 30, 1976; photos by Russ Kleinman & Karen Blisard, February 26, 2023

Cynodontium tenellum, photomicrograph of leaf, collection and ID by Guy R. Brassard, Canada, Labrador, Kaipokok Bay, SE shore opposite Sister Islands, on granitic cliff, July 30, 1976; photos by Russ Kleinman & Karen Blisard, February 26, 2023

Cynodontium tenellum, photomicrograph of leaf apex, collection and ID by Guy R. Brassard, Canada, Labrador, Kaipokok Bay, SE shore opposite Sister Islands, on granitic cliff, July 30, 1976; photos by Russ Kleinman & Karen Blisard, February 26, 2023

Cynodontium tenellum, photomicrograph of leaf base, collection and ID by Guy R. Brassard, Canada, Labrador, Kaipokok Bay, SE shore opposite Sister Islands, on granitic cliff, July 30, 1976; photos by Russ Kleinman & Karen Blisard, February 26, 2023

Cynodontium tenellum, photomicrograph of leaf base, collection and ID by Guy R. Brassard, Canada, Labrador, Kaipokok Bay, SE shore opposite Sister Islands, on granitic cliff, July 30, 1976; photos by Russ Kleinman & Karen Blisard, February 26, 2023

Cynodontium tenellum, photomicrograph of proximal leaf cross section, collection and ID by Guy R. Brassard, Canada, Labrador, Kaipokok Bay, SE shore opposite Sister Islands, on granitic cliff, July 30, 1976; photos by Russ Kleinman & Karen Blisard, February 26, 2023

Cynodontium tenellum, photomicrograph of more distal leaf cross section, collection and ID by Guy R. Brassard, Canada, Labrador, Kaipokok Bay, SE shore opposite Sister Islands, on granitic cliff, July 30, 1976; photos by Russ Kleinman & Karen Blisard, February 26, 2023

Cynodontium tenellum, photomicrograph of yet more distal leaf cross section, collection and ID by Guy R. Brassard, Canada, Labrador, Kaipokok Bay, SE shore opposite Sister Islands, on granitic cliff, July 30, 1976; photos by Russ Kleinman & Karen Blisard, February 26, 2023

Cynodontium tenellum, photomicrograph of distal leaf cross section, collection and ID by Guy R. Brassard, Canada, Labrador, Kaipokok Bay, SE shore opposite Sister Islands, on granitic cliff, July 30, 1976; photos by Russ Kleinman & Karen Blisard, February 26, 2023
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