 Pine microstrobilis (pollen cone) with microsprorangia |
 Pine microspores |
 Pine pollen |
 More pine pollen |
 Germinating pine pollen |
 Developing ovuliferous scale in
a young pine seed cone (megastrobilis)
|
 Pine megastrobilis (seed cone) with ovuliferous
scales and developing ovules
|
 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 |