Diplazium pycnocarpon
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| Silvery glade fern | |
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| Diplazium pycnocarpon in rich mesophytic forest, Brown County State Park, Indiana, USA. | |
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Diplazium
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| Species: |
D. pycnocarpon
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| Binomial name | |
| Diplazium pycnocarpon (Spreng.) Broun
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| Synonyms | |
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Asplenium pycnocarpon Spreng. |
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Description
Diplazium pycnocarpon (narrow-leaved glade fern, narrow-leaved-spleenwort, glade fern) is a tall slender-leaved fern growing as individuals with 5 to 6 leaves. The plant spreads by creeping underground stems allowing a small colony to develop over time. The leaf blade is oblong-lanceolate and once-pinnate, unlike the closely related Athyrium. Leaves grow to about 90 cm (36 in) long and 15 cm (6 in) wide. The pinnae are linear and entire. Fertile leaves are similar but erect, narrower than sterile leaves and with longer stipes. The sori are long and narrow in two lines along the underside of a leaf pinna, giving rise to its specific epithet pycnocarpon ('crowded fruits').
Its common name description "narrow-leaved" is reflected in its original specific epithet by André Michaux in 1803: angustifolium (angustus 'narrow' + folium 'leaf'). Michaux classified it in the genus Asplenium.[1]
Distribution
Endemic to eastern North America. Widespread from southern Ontario to the Gulf of Mexico and west to Minnesota and Arkansas. Usually found as isolated plants or colonies. See Flora of North America for distribution map.
Ecology
Grows in lighter parts of mesophytic forests and in ravines in moist but well-drained, neutral to basic soils.
References
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External links
- Flora of North America: Diplazium pycnocarpon
- USDA plant profile
- Global Biodiversity Information Facility (GBIF) Data Portal
Further reading
- Cobb, Boughton. (1984). A Field Guide to Ferns and their Related Families of Northeastern and Central North America. Peterson Field Guides.
