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Epimedium × rubrum

 

Bishops Caps, Red Epimedium, Red Barrenwort, Bishop’s Caps

KingdomPlantaePlants, but not fungi, lichens, or algae
SubkingdomTracheobiontaVascular plants—plants with a “circulatory system” for delivering water and nutrients
DivisionMagnoliophytaFlowering plants, also known as angiosperms
ClassMagnoliopsidaDicotyledons—plants with two initial seed leaves
SubclassMagnoliidaeIncludes magnolias, nutmeg, bay laurel, cinnamon, avocado, black pepper, and many others
OrderRanunculalesBasal (evolved earlier) eudicots, also called “true dicots”
FamilyBerberidaceaeBarberry family
GenusEpimedium
Speciesrubrum

About plant names...

This is a cultivar, introduced (apparently) for better winter tolerance. They are popular as ground covers in shaded areas of gardens, but they are not found in the wild. “Bishops’ caps” refers to the dainty flowers, which resemble a bishop’s mitre (though I don’t see much of a resemblance).

Identification: Rubrum comes from the red-tinted, heart-shaped leaves. Leaves are 1-1½" (2.5-3.8 cm) long, with serrated edges. Bishop’s caps are 8-13" (20-33 cm) in height, and about 12" (30 cm) around. Flowers are copious, each about ¼" (6.3 mm) around, with four white pink-edged petals.

Online References:

Epimedium × rubrum in Paghat's Garden

Epimedium on picsearch

Epimedium × rubrum at the Missouri Botanical Garden

Epimedium × rubrum on Erv Evans' site at the North Carolina State University College of Agriculture and Life Sciences

Epimedium × (Bishops Caps, Red Epimedium, Red Barrenwort, Bishop’s Caps)

7/7/2017 · Tom and Susan’s, Pepperell, MA

Epimedium × (Bishops Caps, Red Epimedium, Red Barrenwort, Bishop’s Caps)

5/12/2007 · Tom and Susan’s, Pepperell, MA

Epimedium × (Bishops Caps, Red Epimedium, Red Barrenwort, Bishop’s Caps)

4/19/2012 · Tom and Susan’s, Pepperell, MA

Epimedium × (Bishops Caps, Red Epimedium, Red Barrenwort, Bishop’s Caps)

4/29/2017 · Tom and Susan's, Pepperell, MA
≈ 3 × 3" (7.7 × 7.9 cm)

Epimedium × (Bishops Caps, Red Epimedium, Red Barrenwort, Bishop’s Caps)

5/12/2007 · Tom and Susan’s, Pepperell, MA
≈ 6 × 4" (15 × 10 cm)

Epimedium × rubrum description by Thomas H. Kent, last updated 15 Oct 2013.

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Epimedium × (Bishops Caps, Red Epimedium, Red Barrenwort, Bishop’s Caps)

4/29/2017 · Tom and Susan's, Pepperell, MA
≈ 4 × 2½" (10 × 7.1 cm)

Epimedium × (Bishops Caps, Red Epimedium, Red Barrenwort, Bishop’s Caps)

5/12/2007 · Tom and Susan’s, Pepperell, MA
≈ 21 × 14" (52 × 35 cm)

Epimedium × (Bishops Caps, Red Epimedium, Red Barrenwort, Bishop’s Caps)

4/28/2010 · Tom and Susan’s, Pepperell, MA
≈ 15 × 10" (39 × 26 cm)

Epimedium × (Bishops Caps, Red Epimedium, Red Barrenwort, Bishop’s Caps)

5/12/2007 · Tom and Susan’s, Pepperell, MA

Epimedium × (Bishops Caps, Red Epimedium, Red Barrenwort, Bishop’s Caps)

5/12/2007 · Tom and Susan’s, Pepperell, MA
≈ 17 × 11" (43 × 28 cm)

Epimedium × (Bishops Caps, Red Epimedium, Red Barrenwort, Bishop’s Caps)

5/12/2007 · Tom and Susan’s, Pepperell, MA

Epimedium × (Bishops Caps, Red Epimedium, Red Barrenwort, Bishop’s Caps)

Redder leaves in clusters of three are sometimes raised above the other leaves. · 6/14/2010 · Tom and Susan’s, Pepperell, MA

Epimedium × (Bishops Caps, Red Epimedium, Red Barrenwort, Bishop’s Caps)

5/8/2007 · Tom and Susan’s, Pepperell, MA
≈ 8 × 5" (19 × 13 cm)

Range: Zones 5-9:

About this map...