Rubus jacens

Blanchard

Spreading Dewberry

RosaceaeFruit
⚠ Dangerous Lookalikes — Has a deadly poisonous lookalike — see comparison below
Rubus jacens
iNaturalist · cc-by
(c) Alex Karasoulos, some rights reserved (CC BY), uploaded by Alex Karasoulos
Rubus jacens
iNaturalist · cc-by
(c) Alex Karasoulos, some rights reserved (CC BY), uploaded by Alex Karasoulos

What to Eat

Edible parts: Fruit

The fruit can be eaten raw or cooked.

Dangerous Lookalikes

This plant can be confused with the following toxic species. Always verify identification carefully before consuming any wild plant.

DEADLY
Red Baneberry
Red Baneberry
Actaea rubra
SAFE
Rubus jacens
Spreading Dewberry
Rubus jacens
Actaea rubra
Actaea rubra
Rubus jacens

Red Baneberry: Short herbaceous plant (no thorns), berries on thick red stems, each berry has a single seed, compound sharply-toothed leaves.

Spreading Dewberry: Thorny woody canes (brambles), aggregate berry made of many drupelets, berries pull easily from receptacle.

Where to Find It

It is a temperate plant.

North America, USA,

Countries: Antigua & Barbuda, Barbados, Bahamas, Belize, Canada, Costa Rica, Cuba, Dominica, Dominican Republic, Grenada, Guatemala, Honduras, Haiti, Jamaica, St Kitts & Nevis, St Lucia, Mexico, Nicaragua, Panama, Puerto Rico, El Salvador, Trinidad & Tobago, United States, St Vincent

How to Identify

A deciduous shrub growing 0.3m tall by 2m wide with hermaphroditic flowers pollinated by insects. Tolerates light sandy, medium loamy, and heavy clay soils with good drainage. Grows in mildly acidic to basic soil pH, semi-shade or full sun. Unlike related species, adapts to both dry and moist soil conditions.

How to Grow

We have very little information on this species and do not know if it will be hardy in Britain, though judging by its native range it should succeed outdoors in most parts of this country. The following notes are based on the general needs of the genus. Easily grown in a good well-drained loamy soil in sun or semi-shade. Plants in this genus are notably susceptible to honey fungus.

Propagation: Seed requires stratification and is best sown in early autumn in a cold frame. Stored seed requires one month stratification at about 3°c and should be sown as early as possible in the year. Prick out seedlings when large enough to handle and grow on in a cold frame, then plant out into permanent positions in late spring of the following year. Cuttings of half-ripe wood can be taken in July/August in a frame. Tip layering can be done in July, with plants set out in autumn. Division is possible in early spring or just before leaf-fall in autumn.

Medicinal Uses

None known

Other Uses

A purple to dull blue dye is obtained from the fruit.

Wikipedia

Source ↗

Rubus jacens is a rare species of flowering plant in the rose family. It is native to eastern Canada (Ontario, Québec, Nova Scotia) and the north-eastern United States (New Hampshire, Vermont, New York, Pennsylvania). The genetics of Rubus is extremely complex, so that it is difficult to decide on which groups should be recognized as species. There are many rare species with limited ranges such as this. Further study is suggested to clarify the taxonomy. Some studies have suggested that R. jacens may have originated as a hybrid between R. setosus and R. hispidus.

Notes

There are about 250 Rubus species.

References (1)
  • Plants for a Future database, The Field, Penpol, Lostwithiel, Cornwall, PL22 0NG, UK. http://www.scs.leeds.ac.uk/pfaf/

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