General:
Perennial from a smooth rhizome.

Stems:
10-60 cm tall, 1-4 mm thick, their central cavity 1/2 the stem diameter, regularly and richly branched, the sheaths with 8-18 teeth which remain fused and form 3-4 groups; branches with 3-4 ridges, branched again, the 1st internodes of the main branches longer than the corresponding sheaths.Cone1-3 mm long, rounded at the tip.

Source:  The Illustrated Flora of British Columbia

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Illustration Source:  The Illustrated Flora of British Columbia

Flower Colour:
Green

Blooming Period:
Spring

Fruit/Seed characteristics:
Colour: Green
Present from Spring to Fall

Source:  The USDA

Synonyms and Alternate Names:
Equisetum sylvaticum var. multiramosum (Fernald) Wherry
Equisetum sylvaticum var. pauciramosum Milde
Equisetum sylvaticum var. sylvaticum