| Cycads - Cycadophyta |
| |
| Scientific
classification |
| Kingdom: |
Plantae |
| Division: |
Cycadophyta |
| Class: |
Cycadopsida |
| Order: |
Cycadales |
|
| Families |
|
Cycadaceae cycas
family
Stangeriaceae
stangeria family
Zamiaceae zamia
family
|
Cycads are a group of palm-like plants. The cycads are a subset of
the gymnosperms, the seed-bearing, non-flowering plants. The cycads were very
common in the Mesozoic era, especially during the Jurassic period. In fact, the Jurassic period is known as the
Age of Cycads. Today cycads are only found in the tropical or subtropical areas of the world. There are three main
families of Cycads today: Cycadaceae,
Stangeriaceae, and Zamiaceae. The best known cycad is the sago palm which is often kept as a houseplant. The sago palm is not related to the true palms.
Cycads have been reported to fix nitrogen in association with
a cyanobacterium.[1]
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