Botrychium oneidense (Gilbert) House  -  Blunt-lobed Grapefern


 

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Botrychium oneidense - (image 1 of 3)

 

Taxonomy

Family: Ophioglossaceae

Habitat

Moist acidic woods and swamps.

Associates

 

Distribution

New Brunswick to Ontario and MN, south to NC and IN.

Morphology

Trophophore blade leathery, persistently dull bluish green, 2-3-pinnate; major segments ovate; ultimate segments obtuse or rounded.

Notes

Spores produced late summer to fall

Wetland category: NA

Similar to the less-dissected form of B. dissectum but with more blunt segments and a blade that remain green during the winter. The leaves of B. dissectum tend to turn a bronze color in winter if exposed.

References

Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.
The New York Botanical Garden. Bronx, NY

 

Wagner, W.H, Jr. and Wagner, F.S. 1993. Botrychium. In: Flora of North America North of
Mexico, Vol. 2. Oxford University Press, New York and Oxford.

 


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Michael Hough 2018