Markandeyapurana 49.62

49.62

tatastāḥ paryagvahṇanta nadīkṣetrāṇi parvatān /
vṛkṣagulmauṣadhīścaivamātmanyāyādyathābalam //

And then by their union with the earth plants came into existence, of fourteen kinds, both those which grow on uncultivated soil, and those which grow unsown, both cultivated and wild. And trees and shrubs bearing flowers and fruit in their seasons were produced. This manifestation of vegetation appeared first in the Tretā age. On that vegetation the people subsist in the Tretā age, O Muni. And then lapsing into novel passion and covetousness those people next took possession of rivers and fields, mountains, and trees, shrubs and plants in their own right even according to might. Through that their sin those plants perished before their very eyes, and the earth then devoured those plants at once, O most wise brāhman,[45] Moreover when that vegetation had perished, those people fell into still further confusion.