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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
SpeciesrubrumFrom the Latin ruber or rubra meaning “red”

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 1′ (30 cm) around. Flowers are copious, each about ¼″ (6.3 mm) around, with four white pink-edged petals.

Online References:

in Paghat's Garden

Picsearch (Epimedium)

The Missouri Botanical Garden

Plants.ces.ncsu.edu

Epimedium × (bishops caps, red epimedium, red barrenwort, bishop’s caps)

7/29/2023 · Tom and Susan’s, Pepperell, Mass­a­chu­setts

Epimedium × (bishops caps, red epimedium, red barrenwort, bishop’s caps)

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

Epimedium × (bishops caps, red epimedium, red barrenwort, bishop’s caps)

4/29/2017 · Tom and Susan’s, Pepperell, Mass­a­chu­setts · ≈ 4½ × 3″ (11 × 7.9 cm)

Epimedium × (bishops caps, red epimedium, red barrenwort, bishop’s caps)

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

Epimedium × (bishops caps, red epimedium, red barrenwort, bishop’s caps)

7/29/2023 · Tom and Susan’s, Pepperell, Mass­a­chu­setts

Epimedium × (bishops caps, red epimedium, red barrenwort, bishop’s caps)

4/29/2017 · Tom and Susan’s, Pepperell, Mass­a­chu­setts · ≈ 4 × 2½″ (10 × 7.1 cm)

Epimedium rubrum

 

Epimedium × rubrum description by Thomas H. Kent, last updated 15 Jul 2020.

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Epimedium × (bishops caps, red epimedium, red barrenwort, bishop’s caps)

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

Epimedium × (bishops caps, red epimedium, red barrenwort, bishop’s caps)

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

Epimedium × (bishops caps, red epimedium, red barrenwort, bishop’s caps)

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

Epimedium × (bishops caps, red epimedium, red barrenwort, bishop’s caps)

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

Epimedium × (bishops caps, red epimedium, red barrenwort, bishop’s caps)

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

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, Mass­a­chu­setts

Epimedium × (bishops caps, red epimedium, red barrenwort, bishop’s caps)

5/8/2007 · Tom and Susan’s, Pepperell, Mass­a­chu­setts

Range: Zones 5-9:

About this map...