| A. strobili bearing microsporophylls and
microsporangia |
1. female
strobili |
| B. reduced male gametophyte
|
2. male strobili |
| C. cones bearing megasporophylls with ovules or
megasporangia |
3. ovule
|
| D.
nucellus is protected by envelopes
|
4. macrosporangiate
|
|
|
5.
microsporangiate |
|
|
6. pollen grain |
