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On Psoroma Species from the Southern Hemisphere with Cephalodia Producing Vegetative Dispersal Units

Published online by Cambridge University Press:  28 March 2007

Per M. Jørgensen  and
M. Wedin
Per M. Jørgensen
Affiliation:
Botany Department, Natural History Museum, Cromwell Road, London SW7 5BD, UK.
M. Wedin
Affiliation:
Botany Department, Natural History Museum, Cromwell Road, London SW7 5BD, UK.
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Abstract

Two new species of Psoroma with unusual cephalodia are described: P. echinaceum with isidiate cephalodia, from southern South America and P. geminatum with fragile phyllidiate cephalodia, from New Zealand and Australia. These are additional to two previously described species producing dispersal units on their cephalodia, P. durietzii P.James & Henssen (with soredia) and P. aphthosum, Vain. (syn. nov. P. dimorphum Malme) (with isidia). This is a strategy development that ensures successful establishment of new thalli.

Type
Research Article
Information
The Lichenologist , Volume 31 , Issue 4 , July 1999 , pp. 341 - 347
Copyright
Copyright © British Lichen Society 1999

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