ISSN:
1615-6110
Keywords:
Orchidaceae
;
Ophrys
;
O. bertolonii agg.
;
O. sphecodes agg.
;
comb. nov.
;
O. apulica
;
O. benacensis O. garganica
;
O. holosericea subsp.celiensis
;
O. lutea subsp.minor.
;
Population analyses
;
hybrid character coherence
;
homogamic hybrid taxa
;
differentiation-hybridization cycles
;
Flora of Italy
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Flower polymorphism in 15 ItalianOphrys populations (N = 282) was analysed in detail. Statistical and graphical evaluation of data demonstrates morphological relationships and amount of hybrid character coherence.O. bertolonii s. str. andO. atrata are stable parental taxa, but occasionally form hybrids and hybrid swarms. Much evidence suggests that it was through such homogamic hybridization, involving these and other species ofOphrys, that the stabilized taxaO. bertoloniiformis andO. promontorii (ecologically different, but sympatric with the parents on Gargano), andO. benacensis (geographically separated from the parents in the Insubric region) originated. These differentiation-hybridization cycles are linked to the break-down and new establishment of incomplete prezygotic crossing barriers (e.g. different flower biology, flowering time, habitat preference).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00985497
