 Pine microsporophyll from a pollen cone (microstrobilis). |
 Pine microspores. |
 Pine pollen. |
 More pine pollen. |
 Germinating pine pollen. |
 Developing ovuliferous scale in
a young pine seed cone (megastrobilis).
|
 Pine seed cone with ovuliferous
scale and developing ovule.
|
 Archegonia from a developing ovule in pine. |
 Archegonia from pine ovule with egg nucleus. |
 Lilium anther with four microsporangia. |
 Lilium microsporangium with cells undergoing the first division of meiosis. |
 Second division in microsporocytes of a Lilium microsporangium. |
 Microspore tetrads in Lilium anther. |
 Microspore tetrads in Lilium anther. |
 Germinating pollen of Lilium. |
 Lilium
ovary at early stage of development.
|
 Lilium embryo sac development - one-nucleate stage. |
 Lilium embryo sac development - first division. |
 Lilium embryo sac development - two nucleate stage. |
 Lilium embryo sac development - second division. |
 Lilium embryo sac development - four nucleate stage. |