The Purpose Of This Contract Is To Carry Out Tasks Of Monitoring, Prospecting And Evaluation Of The Conservation Status Of 8 Species Of Threatened Flora Of Catalonia, Included In The Catalog Of Threatened Flora Of Catalonia, Regulated By Decree 172/2008, Of August 26. The Species Belong To The Groups Of Pteridophytes And Spermatophytes And, Due To Their Biological And Methodological Diversity And Their Distribution, The Contract Has Been Structured Into Two Differentiated Lots, One For Each Taxonomic Group.