Abstract
In some species of Ranunculaceae the seeds contain embryos with a weak outer as well as inner differentiation; in others the embryos have developed cotyledons, hypocotyl and radicle with a pronounced differentiation in promeristems inside the embryo. Embryos in Thalictreae and Actaeae are weaker differentiated than embryos from most species belonging to other tribes. The ratios cotyledon length to total embryo length (excl. the suspensor) in these tribes as well as in subtribes Helleborinae and Calthinae in tribe Caltheae are about one third. In other subtribes of Caltheae, Delphiniinae and Nigellinae, the ratios are almost one half as in most of the other tribes. It is therefore obvious that Caltheae is a very inhomogeneous tribe.
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© 1995 Springer-Verlag Wien
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Engell, K. (1995). Embryo morphology of the Ranunculaceae . In: Jensen, U., Kadereit, J.W. (eds) Systematics and Evolution of the Ranunculiflorae. Plant Systematics and Evolution Supplement 9, vol 9. Springer, Vienna. https://doi.org/10.1007/978-3-7091-6612-3_21
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DOI: https://doi.org/10.1007/978-3-7091-6612-3_21
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