Ricerca
Risultati della ricerca
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Journal article
Marsh-orchids of Canada: long-standing mysteries partially solved.
Between 1959 and 1988, three populations of purple-flowered terrestrial orchids attributable to subgenus were discovered in Canada. The populations at Timmins, Ontario, and St John's, Newfoundland were strongly marked on both flowers and leaves, in contrast with the anthocyanin-deficient population at Tilt Cove, Newfoundland. All three populations have since experienced... -
Journal article
Trait analysis in a population of the Greater Butterfly-orchid observed through a 16-year period.
A large English population of the temperate tuberous Greater Butterfly-orchid, , was monitored through a 16-year period. Each June the number of flowering plants was counted and 60 flowering plants were measured for four morphological traits, selected for both ease of measurement and their contrasting contributions to the life history... -
Journal article
Systematic reappraisal of marsh-orchids native to Scotland.
The intensively studied Eurasian orchid genus has become a model system for exploring allopolyploid evolution, yet determining the optimal circumscriptions of, and most appropriate ranks for, its constituent taxa remain highly controversial topics. Here, novel allozyme data and detailed morphometric data for 16 Scottish marsh-orchid populations are interpreted in the... -
Journal article
Morphological Continua Make Poor Species: Genus-Wide Morphometric Survey of the European Bee Orchids (Ophrys L.).
Despite (or perhaps because of) intensive multidisciplinary research, opinions on the optimal number of species recognised within the Eurasian orchid genus Ophrys range from nine to at least 400. The lower figure of nine macrospecies is based primarily on seeking small but reliable discontinuities in DNA ‘barcode’ regions, an approach... -
Journal article
The mirror crack'd: both pigment and structure contribute to the glossy blue appearance of the mirror orchid, Ophrys speculum.