Waldsteinia ternata

This article is about the Eurasian species (Siberian barren strawberry) often mislabeled and sold as a North American native. For the true North American native species, see Waldsteinia fragarioides.

Not to be confused with the North American species Waldsteinia fragarioides (Appalachian barren strawberry) for which this plant is a common confusion species in the nursery trade, or with Potentilla sterilis (barren strawberry), or with Potentilla indica (mock strawberry).

Waldsteinia ternata
A living specimen of Waldsteinia ternata displaying its distinctly rounded, overlapping flower petals and sharply toothed, serrated leaf margins.
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Rosales
Family:	Rosaceae
Genus:	Waldsteinia
Species:	W. ternata
Binomial name
Waldsteinia ternata (Stephan) Fritsch
Synonyms
Geum ternata Siberian barren strawberry Eurasian barren strawberry

Description

Waldsteinia ternata is a low growing herbaceous perennial plant species belonging to the rose family (Rosaceae). It has a disjunct distribution, being native to Eastern Europe and Eastern Asia, namely the Changbai Mountains of China, Sakhalin and Siberia in Russia, and Japan. Both the leaves and the flowers of this plant are reminiscent of strawberry. The leaves are trifoliate (hence the specific epithet), arranged in rosettes, glossy, and evergreen in climates with mild winters. The yellow, five petaled flowers appear in late spring or early summer. The fruit is an inedible berry. The plant usually grows 4 inches (10 cm) to 6 inches (15 cm) tall and forms a thick foliage carpet by spreading via stolons and rhizomes. The spread is slow and thus not seen as aggressive.

Cultivation

Waldsteinia ternata, has been cultivated since at least 1803. The cultivated plants are, for the most part, based on Waldsteinia ternata subsp. trifolia. This plant is widely cultivated in temperate regions as a robust, flowering groundcover. Undemanding of soil conditions, it's used in landscape and garden design as a groundcover or as an edger for the herbaceous border. It is highly adaptable to varied light conditions, performing well from full sun to deep shade. As it can grow well in dappled shade, it is considered appropriate for shade gardens. Neither pests nor diseases pose significant problems. The 'Kronstadt' cultivar has enlarged flowers, while 'Variegata' has variegated leaves.

Lookalike Species and Commercial Confusion

Waldsteinia ternata (Siberian barren strawberry) is frequently mislabeled and mistakenly sold as a misnomer of the choice North American native species Waldsteinia fragarioides (Appalachian barren strawberry). The two species can be differentiated through three key morphological features:

• Petal Structure: The blossoms of Waldsteinia ternata feature broad, circular petals that often overlap. Conversely, Waldsteinia fragarioides features narrow, widely spaced petals leaving open gaps.
• Foliage Morphology: The leaflets of Waldsteinia ternata display coarsely toothed, jagged, serrated margins, whereas Waldsteinia fragarioides features obovate leaflets with softer, rounded crenate margins.
• Calyx Anatomy (Epicalyx): The Eurasian Waldsteinia ternata features a prominent epicalyx composed of five narrow secondary mini bractlets between the 5 main sepals. In contrast, the North American Waldsteinia fragarioides lacks an epicalyx, only exhibiting exactly five smooth primary sepals.

Images

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  Blooming patch of groundcover showing dense growth.
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  Leaf architecture of the Eurasian species.
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  The epicalyx composed of five narrow secondary mini bractlets between the 5 main sepals.
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  Flower development observation.
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  Shoot layout displaying divisions.
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  Yellow blossom showing rounded petals.
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  Waldsteinia ternata and Vinca minor growing together.
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  Groundcover view showcasing foliage.
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  Mislabeled Waldsteinia ternata growing in Mount Auburn Cemetery, Cambridge, Massachusetts, USA.
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  Urban groundcover in parking lot.
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  Macro shot of a flower.
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  Lush vegetative mound.
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  Cluster of yellow blooms.
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  Top-down detail of leaflets.