Fern Allies: Common Interrupted-clubmoss

Photo of Common Interrupted-clubmoss

Common Interrupted-clubmoss (Spinulum annotinum) is a spore-bearing vascular plant who grows in forests throughout much of New England. This plant creeps by horizontal stems that often hide just below the leaf litter. Upright stems are ~6" tall; often branched near the base; crowded with narrow, bristle-tipped leaves (another common name for this species is Bristly Clubmoss); and have noticeableĀ interruptions that indicate where one year's growth ended and the next began. Each fertile branch is topped with a stalkless, solitary, 1-1.5" long cone-like reproductive structure, called a strobilus.

To learn more about this evergreen fern ally, visit Go Botany. To view the following images in full-size, click here.

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