Nectar spurs are tubular outgrowths of a floral organ that contain or give the appearance of containing nectar. They are hypothesized to be a ‘key innovation’ leading to rapid speciation within a lineage because they...
Tag - nectar spur
Alex Assiry
Floral nectar tubes in Pelargonium
Co-evolutionary matches between lengths of floral nectar tubes and pollinator proboscises is associated with speciation in several lineages, including Pelargonium (Geraniaceae), a genus renowned for morphological...
botanyone
Zygomorphy evolved from disymmetry in Fumarioideae
Floral bilateral symmetry (zygomorphy) has evolved at least 70 times during the history of angiosperms, whilst radial symmetry (actinomorphy) is the ancestral and most common state for angiosperms as a whole. Sauquet et...
Corolla morphology and diversification rates in toadflaxes
Results suggest that opposing individual-level/species-level selection pressures have driven evolution of pollinator-restrictive traits in bifid toadflaxes.
