Rhizoautoicous Aloina bifrons in the Mojave Desert, a Possible Adaptation to Increase Spore Production

Lloyd R. Stark; Claudio Delgadillo M

doi:10.1639/0007-2745(2001)104[0104:RABITM]2.0.CO;2

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Lloyd R. Stark,¹ Claudio Delgadillo M²

¹Department of Biological Sciences, University of Nevada, 4505 Maryland Parkway, Las Vegas, NV 89154-4004, U.S.A.
²Instituto de Biología, UNAM, Apartado Postal 70-233, Delegación Coyoacán, 04510 México, D.F.

Abstract

A re-examination of populations of Aloina bifrons from the Mojave Desert of Nevada was prompted by observations of frequent sporophytic populations. Sporophytic populations are unusual for xeric dioicous species. Aloina bifrons, previously described as dioicous, was found to be occasionally rhizoautoicous. Ramets bearing perichaetia and ramets bearing perigonia were at times connected beneath the ground surface by single rhizoids, rhizoid strands, or by masses of rhizoids. Rhizoautoicy probably functions in increasing spore production in environments unconducive to fertilization.

Citation Download Citation

Lloyd R. Stark and Claudio Delgadillo M "Rhizoautoicous Aloina bifrons in the Mojave Desert, a Possible Adaptation to Increase Spore Production," The Bryologist 104(1), 104-108, (1 March 2001). https://doi.org/10.1639/0007-2745(2001)104[0104:RABITM]2.0.CO;2

Received: 2 May 2000; Accepted: 1 July 2000; Published: 1 March 2001

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