Ptychostomum pacificum (Bryaceae), a new Fen Species from California, Oregon, and Western Nevada, USA

John R. Spence; James R. Shevock

doi:10.3120/0024-9637-59.3.156

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John R. Spence,¹ James R. Shevock²

¹Glen Canyon National Recreation Area, P.O. Box 1507, Page, AZ 86040-1507
²California Academy of Sciences, Department of Botany, 55 Music Concourse Dr., Golden Gate Park, San Francisco, CA 94118-4503 jshevock@calacademy.org

Abstract

Ptychostomum pacificum J. R. Spence & Shevock, a new and highly distinctive species restricted to fen habitats within coniferous forests in California, Oregon, and extreme western Nevada is described and illustrated. This species appears to be related to P. turbinatum (Hedw.) J. R. Spence but is easily distinguished by a combination of features including large size, percurrent yellowish-brown costa with numerous incrassate cells at the leaf tip, strongly recurved leaf margins, and elongate cylindrical to narrowly pyriform capsules.

Citation Download Citation

John R. Spence and James R. Shevock "Ptychostomum pacificum (Bryaceae), a new Fen Species from California, Oregon, and Western Nevada, USA," Madroño 59(3), 156-162, (1 July 2012). https://doi.org/10.3120/0024-9637-59.3.156

Published: 1 July 2012

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