Page 5 - Morphoanatomical investigations of cones and pollen in Cathaya argyrophylla Chung & Kuang (Pinaceae, Coniferales) under systematical and evolutional aspects

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Feddes Repertorium 2014, 125, 25–38 Morpho-anatomical investigations of cones and pollen

Figure 3. Cathaya argyrophylla, morphology and anatomy of receptive seed-cones; A: Young cone-scale/seedscale
complex; seed-scale and ovules are developed nearly simultaneously; B: The integument surrounds the nucellus secon-
darily (N); C: At pollination time the nucellus is completely surrounded by the integument (I); the parts of the seed-scale
which later develop the seed-wing are distinctly recognizable (dark red part); D: Single cone-scale/seed-scale complex;
E: Cone- and seed-scales are fused in the basal part; both scales supplied by an own vasculature; the vascular bundle
strands of both scales do not fuse before entering the bundle of the cone axis; F: Ripe seeds with a distinct wing.

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