10 pieces of dryopteris (fern) fronds, sexual. Each pinna consists of numerous pinnules, each with many sori (sorus) where the spores are made. The samples are collected locally in Shropshire, and are free from chemicals.
Fertile fronds are only available June & July. Orders placed May, August & September are unlikely to contain sori. Unavailable during winter months.
Preserved fertile fronds are available year round.