Stumpy trunks, fans of palmate leaves and some lethal ingredients in the
seeds are the cyclads’ distinguishing marks. But Knut Norstog and Trevor
Nicholls’ The Biology of the Cycads have found far more to tell us about this
ancient species, which dominated the world for more than 230 million years until
flowering plants came along. Some have endured unchanged since the Mesozooic.
Published by Comstock/Cornell University Press, £13.95, ISBN 080143033X.
More from 91av
Explore the latest news, articles and features
Health
Cancer is increasing in young people and we still don't know why
News
Health
People are betting on measles outbreaks – and that might be useful
News
Physics
Is consciousness more fundamental to reality than quantum physics?
Features
Technology
Humanoid robots may be about to break the 100-metre sprint record
News
Popular articles
Trending 91av articles
1
100-year-old assumption about the universe may soon be overturned
2
Is consciousness more fundamental to reality than quantum physics?
3
We may finally have a cure for many different autoimmune conditions
4
Why the keto diet could be a revolutionary way to treat mental illness
5
How autoimmune conditions can unexpectedly drive mental illness
6
Humanoid robots may be about to break the 100-metre sprint record
7
The bombshell results that demand a new theory of the universe
8
10,000 new planets found hidden in NASA telescope data
9
Symptoms of early dementia reversed by bespoke treatment plans
10
We’ve glimpsed before the big bang and it’s not what we expected
