PlantsWoodsia→Blunt-Lobed Woodsia (Woodsia obtusa)

Common names:
Give a thumbs up Blunt-Lobe Woodsia
Give a thumbs up Blunt-Lobed Cliff Fern
Give a thumbs up Blunt-Lobed Woodsia
Give a thumbs up Bluntlobe Cliff Fern

General Plant Information (Edit)
Plant Habit: Fern
Life cycle: Perennial
Sun Requirements: Partial or Dappled Shade
Partial Shade to Full Shade
Full Shade
Water Preferences: Mesic
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Plant Height: 1/2 to 1.5 feet
Underground structures: Rhizome
Uses: Groundcover
Will Naturalize
Pollinators: Wind
Containers: Suitable in 3 gallon or larger
Miscellaneous: Monoecious

credit: Jaknouse

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Comments:
Posted by ILPARW (southeast Pennsylvania - Zone 6b) on Oct 22, 2020 8:16 AM

This is a new species to me. I have only seen it at Jenkins Arboretum in southeast Pennsylvania, and with a label. There is a colony of the Broad Beech Fern next to its colony and it seems that the latter species has done some invasion into the Blunt-lobed colony. The Blunt-lobed Cliff Fern species has lacy, narrowly oblong grayish-green or light green fronds with glands and hair on each side of the leaves. The secondary leaves (pinnae) are nearly opposite and widely spaced. The leaflets are blunt-lobed. The sori under the leaves are round with ragged indusia that surround the sori. it is native to southeast Canada down into Florida to east Texas up through eastern Nebraska & Kansas through Minnesota. It grows in moist to dryish, neutral to slightly alkaline soils mostly on cliffs, ledges, and slopes. This is a pretty, low-growing, spreading fern. I've never seen it sold at any nursery, but there are some online specialty nurseries that sell it. The generic name of Woodsia comes from the name of Joseph Woods who was an architect and botanical author of the late 18th century to the mid-19th century.

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