Botrychium virginianum (L.) Sw.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Ophioglossaceae
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Scientific Name
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Description
Species Description - Plants 20–75 cm; bud becoming exposed on one side, its blade and sporophore both reflexed; blade medial or somewhat supramedial, sessile, thin, deciduous, sparingly pilose, deltoid, mostly 7–20 × 10–30 cm, 2–4 times ternate-pinnately compound, the pinnules and segments decurrent, the ultimate segments acutely toothed; sporophore bipinnate or tripinnate, mostly 6–15 cm, on a stalk 7–20 cm; 2n=184. Woods and moist, open places; Nf. and Lab. to Alas., s. to Fla. and Calif.; also in s. Mex. and irregularly in Eurasia. Spring and early summer.
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Common Names
rattlesnake-fern