CREATE TABLE table_11727969_1 (species_in_the_peruvian_amazon INT, taxonomy VARCHAR)

what's the minimum species in the peruvian amazon with taxonomy s fern ( pteridophyta )
SELECT MIN(species_in_the_peruvian_amazon) FROM table_11727969_1 WHERE taxonomy = "s Fern ( Pteridophyta )"
SELECT MIN("species_in_the_peruvian_amazon") FROM "table_11727969_1" WHERE "s Fern ( Pteridophyta )" = "taxonomy"