Batrachospermum (Batrachospermales, Rhodophyta) in Australia and New Zealand: New taxa and records in sections Contorta and Hybrida

Australian Systematic Botany - AUST SYSTEMATIC BOTANY 01/1999; 12(4). DOI: 10.1071/SB98023

ABSTRACT Six species of Batrachospermum from Australia and New
Zealand have a twisted to coiled carpogonial branch and determinate
gonimoblast filaments, and are therefore referable to section
Contorta or Hybrida.
Batrachospermum australicum KÜtz. ex sp. nov. from
large rivers in tropical Northern Territory has a tightly 3-coiled carpogonial
branch; B. vittatum sp. nov. from tropical Northern
Territory has a characteristic longitudinal mid-whorl band of spermatangia;
and B. deminutum sp. nov. from a single locality in
eastern-central New South Wales has reduced whorls and long carpogonial
branches. The other three species are cosmopolitan in distribution:
B. virgatodecaisneanum Sirodot is widespread but
uncommon in temperate regions of both countries;
B. ambiguum Montagne is widespread and common in
tropical Australia; and B. globosporum Israelson is
restricted in Australia to near Brisbane in subtropical southern Queensland.

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