Equisetum sylvaticum

Kırkanahtar

Sterile stems to 80 cm, green, ± smooth; grooves 10-18. Sheaths green, with teeth united into 3-6 broad, subacute lobes, each several-ribbed. Branches numerous, themselves branched, drooping at their ends, 3-4 grooved; lowest internode longer than the stem sheath. Fertile stems produced at the same time as the sterile stems, up to 40 cm, usually with a few branches. Cone 1-2,5 cm.

Temperate Eurasia, N. America.