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Strobilanthes dyerianus

Persian shield, Bermuda conehead

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
SubclassAsteridaeA large class that encompasses asters
OrderLamialesAromatic herbs and shrubs, including lavender, lilac, olive, jasmine, ash, teak, snapdragon, sesame, psyllium, garden sage, mint, basil, and rosemary
FamilyAcanthaceaeAcanthus family, of tropical herbs and shrubs
GenusStrobilanthesFrom the Greek strobilos, “a cone,” and anthos, “flower,” for the form of the flower-head in some species
SpeciesdyerianusFor botanist Sir William Turner Thiselton-Dyer (1843-1928), Director of the Royal Botanic Gardens, Kew, from 1885-1905

About plant names...

Persian shield isn't Persian. It's from Myanmar (Burma). It is not found in the wild in North America. The genus Strobilanthes means "cone flower," because the flowerheads are conical.

Identification: Persian shield is an evergreen, or more accurately, an "everpurple," given that its leaves are a stunningly beautiful shade of purple, variously described as iridescent or metallic. It is a tropical shrub 3-4′ (91-121 cm) tall and 2-3′ (60-91 cm) around. Leaves are opposite, a combination of purple and green, and 4-7″ (10-17 cm) long. Flowers are inconspicuous, pale violet, on short cone-shaped spikes.

Online References:

The Missouri Botanical Garden


The Woodlands Garden Club

Top Tropicals

Cool Tropical Plants

Strobilanthes dyeriana


Strobilanthes dyerianus description by Thomas H. Kent, last updated 25 May 2020.

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Strobilanthes dyerianus (Persian shield, Bermuda conehead)

8/29/2010 · Joy and Jim’s, Mansfield, Mass­a­chu­setts · ≈ 17 × 12″ (44 × 29 cm)

Strobilanthes dyerianus (Persian shield, Bermuda conehead)

3/15/2001 · Hawaii Botanical Gardens, Hawaii

Range: Zones 9b-11:

About this map...