Cystopteris bulbifera (L.) Bernh. - Bulblet Fern


 

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Cystopteris bulbifera - (image 1 of 5)

 

Taxonomy

Family: Polypodiaceae

Habitat

Limestone cliffs and ravines. Also grows in calcareous woods and springy areas.

Associates

Aquilegia canadensis, Camptosorus rhizophyllus, Aralia racemosa, Mitella diphylla, Pilea pumila, Solidago flexicaulis.

Distribution

Nova Scotia and New Brunswick and Quebec west to MN and SD, south to VA and MO and in mountains to GA.

Morphology

Fronds pale green, narrow, 30-80 cm, usually with fewer than 16 pairs of well-developed pinnae; lowest pair of pinnae a little longer than the next pair. Nearly all veins of ultimate segments terminating in the sinuses. Frond shape elongate triangular, tapering to a long, often drooping point. Bulblets form beneath subleaflets. Deciduous.      

Notes

Spores produced late May to early August.

Wetland indicator: Facultative Wetland -

The only fern of eastern NA that forms bulblets. These fall off and can form new plants. The bulblets appear to withstand drying for a period of time.

References

Cobb, B. 1984. A Field Guide to Ferns and Their Related Families.

Houghton Mifflin Co., New York, NY

 

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

 

Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.

 


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 Michael Hough 2004