''Rubus lasiococcus'' is a species of wild blackberry known by the common names roughfruit berry and dwarf bramble. It is native to western North America from

British Columbia British Columbia (commonly abbreviated as BC) is the westernmost province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include rocky coastlines, sandy beaches, ...

to northern

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

, where it grows in mountain forests. In the southern half of its range the plant is commonly found in a plant community in the understory of mountain hemlock (''Tsuga mertensiana'') and Shasta red fir (''Abies magnifica'' var. ''shastensis''). ''Rubus lasiococcus'' is a tangling, prostrate

shrub A shrub (often also called a bush) is a small-to-medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees ...

with very slender

stolon In biology, stolons (from Latin '' stolō'', genitive ''stolōnis'' – "branch"), also known as runners, are horizontal connections between organisms. They may be part of the organism, or of its skeleton; typically, animal stolons are external s ...

s spreading along the ground and rooting where their nodes come in contact with moist substrate, forming a mat. Some stems grow erect to bear flowers. The leaves are each deeply divided into three lobes, or compound into three toothed leaflets, borne on a petiole a few centimeters long. The

inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed o ...

is a solitary flower or a pair of flowers with five reflexed

sepal A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coined b ...

s and five white petals each just under a centimeter (0.4 inch) long. The fruit is a densely hairy red

aggregate Aggregate or aggregates may refer to: Computing and mathematics * collection of objects that are bound together by a root entity, otherwise known as an aggregate root. The aggregate root guarantees the consistency of changes being made within the ...

less than a centimeter (<0.4 inch) wide.Flora of North America, ''Rubus lasiococcus'' A. Gray, 1882. Roughfruit berry
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References

External links

* * * *
Jepson Manual TreatmentUniversity of Washington, Seattle, Burke Museum
{{Taxonbar, from=Q7376212 lasiococcus Flora of British Columbia Flora of the West Coast of the United States Plants described in 1882 Flora without expected TNC conservation status