''Agrimonia pubescens'', the soft agrimony or downy agrimony, is a
flowering plant
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Ancient Greek, Greek words (; 'container, vessel') and (; 'seed'), meaning that the seeds are enclosed with ...
in the genus ''
Agrimonia
''Agrimonia'' (from the Greek ), commonly known as agrimony, is a genus of 12–15 species of perennial herbaceous flowering plants in the family Rosaceae, native to the temperate regions of the Northern Hemisphere, with one species also in Afr ...
'', a member of the
rose family
Rosaceae (), the rose family, is a family of flowering plants that includes 4,828 known species in 91 genera.
The name is derived from the type genus ''Rosa''. The family includes herbs, shrubs, and trees. Most species are deciduous, but some ...
. It grows in dry areas and woodlands.
Taxonomy
The species was first described by
John Torrey
John Torrey (August 15, 1796 – March 10, 1873) was an American botany, botanist, chemist, and physician. Throughout much of his career, he was a teacher of chemistry, often at multiple universities, while he also pursued botanical work, focus ...
and
Asa Gray
Asa Gray (November 18, 1810 – January 30, 1888) is considered the most important American botany, botanist of the 19th century. His ''Darwiniana'' (1876) was considered an important explanation of how religion and science were not necessaril ...
as ''Agrimonia eupatoria'' var. ''mollis''. It was raised to a species by
Nathaniel Lord Britton
Nathaniel Lord Britton (1859 – 1934) was an American botanist and taxonomist who co-founded the New York Botanical Garden in the Bronx, New York (state), New York.
Early life
Britton was born on the 15 of January 1859 at New Dorp, Staten Island ...
after the description by
Karl Friedrich Wilhelm Wallroth
Karl Friedrich Wilhelm Wallroth (13 March 1792 in Breitenstein – 22 March 1857 in Nordhausen) was a German botanist. His name is abbreviated Wallr. as a taxon authority.
He attended classes in medicine and botany at the University of Halle ...
.
Description
''Agrimonia pubescens'' is an erect perennial, growing upwards of tall. It has erect and
canescent or pubescent stems. The five to thirteen leaflets are oblong and
dentate, and
pinnate
Pinnation (also called pennation) is the arrangement of feather-like or multi-divided features arising from both sides of a common axis. Pinnation occurs in biological morphology, in crystals, such as some forms of ice or metal crystals, and ...
ly divided once. The leaves are
lanceolate
The following terms are used to describe leaf plant morphology, morphology in the description and taxonomy (biology), taxonomy of plants. Leaves may be simple (that is, the leaf blade or 'lamina' is undivided) or compound (that is, the leaf blade ...
, with the terminal leaflet being the largest, measuring long and wide. The leaflets increase in size as they approach the top of the compound leaf. At the base of each
petiole
Petiole may refer to:
*Petiole (botany), the stalk of a leaf, attaching the blade to the stem
*Petiole (insect anatomy)
In entomology, petiole is the technical term for the narrow waist of some hymenopteran insects, especially ants, bees, and ...
is oval-shaped
stipule
In botany, a stipule is an outgrowth typically borne on both sides (sometimes on just one side) of the base of a leafstalk (the petiole (botany), petiole). They are primarily found among dicots and rare among monocots. Stipules are considered part ...
with a serrated margin, measuring approximately long and wide. The yellow flowers are borne on spike-like
raceme
A raceme () or racemoid is an unbranched, indeterminate growth, indeterminate type of inflorescence bearing flowers having short floral stalks along the shoots that bear the flowers. The oldest flowers grow close to the base and new flowers are ...
s. Each flower is wide with five yellow petals and five to ten
stamen
The stamen (: stamina or stamens) is a part consisting of the male reproductive organs of a flower. Collectively, the stamens form the androecium., p. 10
Morphology and terminology
A stamen typically consists of a stalk called the filament ...
s. The five sparsely pubescent sepals alternate with the petals. The small flowers and conical fruit have short
pedicel
Pedicle or pedicel may refer to:
Human anatomy
*Pedicle of vertebral arch, the segment between the transverse process and the vertebral body, and is often used as a radiographic marker and entry point in vertebroplasty and kyphoplasty procedures
...
s. The seeds have hook-like projections and are clustered in a bell-like shape. The glabrous
calyx measures while fruiting.
The plant flowers from July through September.
Range
''Agrimonia pubescens'' is found predominantly found in the
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
, east of the
Mississippi River
The Mississippi River is the main stem, primary river of the largest drainage basin in the United States. It is the second-longest river in the United States, behind only the Missouri River, Missouri. From its traditional source of Lake Ita ...
.
References
{{Taxonbar, from=Q17235268
pubescens
This list of Latin and Greek words commonly used in systematic names is intended to help those unfamiliar with classical languages to understand and remember the scientific names of organisms. The binomial nomenclature used for animals and plants ...
Plants described in 1842
Taxa named by Karl Friedrich Wilhelm Wallroth