Abstract
The ontogeny of the flower and the fruit of the Macaronesian endemicCeballosia were investigated morphologically and anatomically by SEM and LM. The fruit does not break into four mericarps, but splits into two two-seeded carpids. Exo- and mesocarp wither after fruit-ripening and the endocarp constitutes the remaining outer wall. Within the stony endocarp tubular parenchymatic isles develop which are linked with the mesocarp. Subsequent disintegration pretends additional locules in the mature fruit. Similar pericarp formations are also found in someHeliotropium species but result from a different ontogeny. Therefore, although a close relationship ofCeballosia toHeliotropium is obvious, the taxon should be treated as a separate genus.
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Carpological investigations in theHeliotropioideae (Boraginaceae) 2. For part 1 seeHilger (1987).
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Hilger, H.H. Flower and fruit development in the Macaronesian endemicCeballosia fruticosa (syn.Messerschmidia fruticosa, Boraginaceae, Heliotropioideae). Pl Syst Evol 166, 119–129 (1989). https://doi.org/10.1007/BF00937880
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DOI: https://doi.org/10.1007/BF00937880