Journal ArticleDOI
The Diascia (Scrophulariaceae) window: an orientation cue for oil-collecting bees.
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TLDR
Observations in natural and experimental situations suggest that the window of Diascia section Racemosae is used as an orientation cue by oil-collecting bees.About:
This article is published in Botanical Journal of the Linnean Society.The article was published on 1990-02-01. It has received 22 citations till now. The article focuses on the topics: Ultraviolet light.read more
Citations
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Journal ArticleDOI
Pollination of Basistemon (Scrophulariaceae) by oil-collecting bees in Argentina
TL;DR: Flower features suggest less close affinity to Angelonia than has previously been assumed, but rather tending towards Old World relatives.
Journal ArticleDOI
Elaiophores: their taxonomic distribution, morphology and functions
TL;DR: The present review focuses on the morphological and functional aspects of these secretory structures of elaiophores, which mediate a specialized interaction between oil-producing plants and a few species of oil-collecting bees Apidae and Melittidae.
Journal ArticleDOI
Pollination by megachilid bees and determinants of fruit‐set in the Cape orchid Disa tenuifolia
Steven D. Johnson,K. E. Steiner +1 more
TL;DR: It was concluded that the pollination system of D. tenuifolia depends on exploitation of instinctive foraging and territorial behaviour of male megachilid bees and does not appear to mimic other rewarding species.
Journal ArticleDOI
Pollen morphology of the tribe Hemimerideae: possible evidence of ancestral pollen types and parallel evolution in the basalmost clade of Scrophulariaceae s.str.
TL;DR: The ancestral pollen type in Scrophulariaceae was 3-colporate with a rather “primitive” exine sculpture, and major trends and pathways of further morphological evolution of pollen were established at the early stages of diversification of the family about the time of divergence of its main lineages.
Dissertation
Pollination and the evolution of floral traits : selected studies in the Cape flora
TL;DR: The role of pollinators in the evolution of floral traits in selected Cape plants is determined, and a better understanding of the relationship between floral adaptation and speciation is reached, to establish a set of testable hypotheses.
References
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Journal ArticleDOI
Pigment distribution, light reflection and cell structure in petals
TL;DR: Petal structure and the distribution of pigments in petals were studied in relation to the functional anatomy of petals and the ways in which petals absorb and reflect light.
Reizmetrische Untersuchung des Farbensehens der Bienen
TL;DR: In this paper, the Bienensinn der Bienen is wesentlich leistungsfahiger, d. h., die Zahl der unterscheidbaren Farbtone is a groser als bisher angenommen: Auch innerhalb der Kuhnschen Hauptspektralbereiche, deren Existenz bestatigt wurde, sind die bienen zu echter Wellenlangenunterscheideung befahigt.
Blumenfarben, wie sie die Bienen sehen
TL;DR: In this paper, a quantitativ auswertbaren, fotografischen Methode in den 3 Grundspektralbereichen des Bienenfarbsystems (Gelb-, Blau-and UV-Bereich) gestattete auf Grund der Kompensativbeziehungen zwischen diesen Bereichen (Daumeb 1956) die ungefahre Berechnung von „BienenFarbton“ and „Unbunt
Journal ArticleDOI
Pollinator behaviour and natural selection for flower colour in Delphinium nelsonii
TL;DR: Evidence is presented that discrimination occurs because white flowers have inferior ‘nectar guides’ and therefore require longer handling times than blue flowers, and pollinators may experience lower net rates of energy intake on white flowers, a sufficient reason for undervisitation by optimally-foraging animals.
Journal ArticleDOI
Ultraviolet floral patterns as functional orientation cues in hymenopterous pollination systems
TL;DR: Morphological and physiological changes in the floral colour patterns of both species following pollination appear to inhibit visitation by bees, and the significance of U.V. floral patterns was also considered.
Related Papers (5)
Pollinator adaptation to oil-secreting flowers-rediviva and diascia.
Kim E. Steiner,V. B. Whitehead +1 more
Oil flowers and oil bees: further evidence for pollinator adaptation.
Kim E. Steiner,V. B. Whitehead +1 more