Huge product rangeOver 140,000 books & equipment products
Rapid shippingUK & Worldwide
Pay in £, € or U.S.$By card, cheque, transfer, draft
Exceptional customer serviceGet specialist help and advice
Volume 18 deals with the fern family Polypodiaceae, subfamily Thelypteridoideae. In Ecuador this subfamily is only represented by the genus Thelypteris. Seventeen of 100 species are endemic of Ecuador, with a further 23 occurring on either the border with Colombia or Peru.