On the Occurrence of an Extensive but Deciduous Prostome in Orthotrichum obtusifolium

Bernard Goffinet; Robynn K. Shannon

doi:10.1639/0007-2745(2002)105[0349:OTOOAE]2.0.CO;2

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Bernard Goffinet,¹ Robynn K. Shannon¹

¹Department of Ecology and Evolutionary Biology, 75 North Eagleville Road, University of Connecticut, Storrs, CT 06269, U.S.A; goffinet@uconn.edu

Abstract

The peristome of O. obtusifolium Brid. is typically double and composed of remnants of cell walls from three peristomial layers. A prostome has never been reported for this species. Here we report the occurrence of a prostome for this taxon based on a single population from western Canada. This prostome extends over the complete surface of the exostome tooth, but falls off shortly after the dehiscence of the capsule.

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Bernard Goffinet and Robynn K. Shannon "On the Occurrence of an Extensive but Deciduous Prostome in Orthotrichum obtusifolium," The Bryologist 105(3), 349-352, (1 September 2002). https://doi.org/10.1639/0007-2745(2002)105[0349:OTOOAE]2.0.CO;2

Received: 12 February 2002; Accepted: 1 April 2002; Published: 1 September 2002

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