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CARPELLARY VASCULATURE AND THE OVULAR VASCULAR SUPPLY IN DRIMYS
Author(s) -
Tucker Shirley C.
Publication year - 1975
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1975.tb14052.x
Subject(s) - ovule , biology , vascular bundle , gynoecium , botany , anatomy , stamen , pollen
The ovules in Drimys winteri var. chilensis and D. lanceolata are consistently vascularized entirely by the ventral bundles, without contribution from the dorsal bundle(s) as generally assumed. The ovules are initiated in two rows, without any in “median” position. Post‐initiatory differential growth of the carpel wall brings the lowermost ovules into apparently median position at maturity. The anomalous vascular supply to the lowermost ovules is thought to be related to concurrence of delayed initiation and development of these ovules with delayed differentiation of the vascular supply.