Taxonomy
- Kingdom: Plantae
- Clade: Angiosperms → Eudicots → Rosids
- Order: Rosales
- Family: Elaeagnaceae
- Genus: Elaeagnus
- Hybrid designation: × submacrophylla
The “×” denotes that Elaeagnus × submacrophylla is a horticultural hybrid. It is generally accepted to result from a cross between Elaeagnus macrophylla (large-leaved oleaster) and Elaeagnus conferta (or a closely related species). Hybrid status is reported in botanical literature and horticultural databases.
Description
- Growth form: Deciduous to semi‑evergreen shrub, typically 2–4 m tall, sometimes reaching 5 m under favorable conditions.
- Leaves: Broad, ovate to lanceolate, 8–15 cm long, glossy dark green on the upper surface and silvery‑gray to rusty‑brown on the underside due to dense, scale‑like trichomes.
- Flowers: Small, fragrant, yellowish‑green, arranged in terminal panicles; bloom period generally late spring to early summer.
- Fruit: Small (≈1 cm diameter), oval drupes that mature from pink to reddish‑purple; edible but tart, commonly consumed by birds.
Distribution and Habitat
As a cultivated hybrid, E. × submacrophylla does not have a natural native range. It is widely planted in temperate regions of North America, Europe, and East Asia for ornamental purposes and for its tolerance of poor soils. In cultivated settings it thrives in full sun to partial shade and tolerates a broad pH range (acidic to mildly alkaline).
Cultivation
- Soil: Well‑drained, loamy to sandy soils; tolerates drought once established.
- Water: Moderate watering needs; reduced irrigation once root system is mature.
- Propagation: Primarily vegetative—softwood cuttings in late spring or semi‑hardwood cuttings in summer; seed propagation is unreliable because of hybrid sterility in many instances.
- Pruning: Light formative pruning after flowering to maintain shape; heavier pruning in late winter can stimulate new growth.
- Pests and Diseases: Generally resistant; occasional aphid infestations or leaf spot fungi may occur but are not severe.
Uses
- Ornamental: Valued for its attractive foliage, fragrant flowers, and colorful fruit; used in shrub borders, hedges, and landscape accent plantings.
- Ecological: Provides winter and spring nectar for pollinators; fruit serves as a food source for birds.
- Edibility: Fruit can be eaten fresh, cooked, or processed into jams; however, the taste is often described as modestly tart, limiting widespread culinary use.
Synonyms and Nomenclatural Notes
- Some sources list Elaeagnus submacrophylla (without the hybrid sign) as a species name; however, current consensus treats the taxon as a hybrid, reflected by the “×” in formal nomenclature.
- The epithet submacrophylla combines the Latin prefix “sub‑” (meaning “somewhat” or “under”) with “macrophylla” (large‑leaved), indicating that the hybrid’s leaves are somewhat less large than those of E. macrophylla.
Conservation Status
Since E. × submacrophylla is a cultivated hybrid, it is not evaluated by the International Union for Conservation of Nature (IUCN) Red List. No known invasive behavior has been documented, though any introduction outside its intended horticultural context should be monitored.
References
- Royal Horticultural Society (RHS) Plant Finder, Elaeagnus × submacrophylla.
- The Plant List (2020 edition) – hybrid records for Elaeagnus.
- USDA Plants Database – horticultural entries for Elaeagnus hybrids.
All information presented reflects established botanical and horticultural sources; no speculative statements have been included.
