An early form of paper made from reed is called papyrus.
Explanation:
In ancient times, the activity of writing was carried out on peeled skins of the trunks of trees. When it was found out that such skins are vulnerable to perishing, people started using reed plants to make papyrus.
The lengthy white tissues found inside the reed plants were peeled and woven together to make 'papyrus'. The word 'paper' was later derived for the same ancient term 'papyrus'.