New Zealand Journal of Botany abstract
* For part XI see Connor, H. E. 1990,
New Zealand journal of
botany 28:
59-65, on gynodioecism in
Chionochloa bromoides.
B97076
Received 16 October 1997; accepted 21 January 1998
Breeding systems in New Zealand grasses XII. Cleistogamy in
Festuca*
H. E. CONNOR
Department of Geography
University of Canterbury
Christchurch, New Zealand
"
Cleistogamy is more common in grasses than in any other angiosperm family
..." (Campbell et al. 1983)
Abstract Cleistogamy in Festuca is of a very simple
form with floral expression primarily in anther size; it is a very low
frequency phenomenon that occurs almost habitually in F. contracta on
several peri-Antarctic islands, and in F. madida of Campbell Island and
at high altitudes on the main islands of temperate New Zealand. Facultative
cleistogamy occurs in Far East Arctic species, and in F. abyssinica of
Africa. Reproduction in Festuca as a whole is centred around
self-incompatibility; departures to cleistogamy are very simple evolutionary
steps and do not compare for frequency and morphological development with that
in the closely related genus Vulpia.
Keywords Festuca; F. contracta; F.
madida; Gramineae; cleistogamy; evolution; New Zealand Botanical
Region; peri-Antarctic islands
Dedicated to the memory of Dr Paul Henri Auquier (1939-1980) formerly
Départment de Botanique, Université de Liège, Belgique,
whose comprehensive studies on the reproduction biology of Festuca are
central to taxonomic and evolutionary interpretations in the genus.
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