Grass-leaved goldenrod

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Grass-leaved goldenrod
Grass-leaved goldenrod (Euthamia graminifolia)

Grass-leaved goldenrod ( Euthamia graminifolia )

Systematics
Order : Astern-like (Asterales)
Family : Daisy family (Asteraceae)
Subfamily : Asteroideae
Tribe : Astereae
Genre : Euthamia
Type : Grass-leaved goldenrod
Scientific name
Euthamia graminifolia
( L. ) Nutt.

The grass-leaved goldenrod ( Euthamia graminifolia (L.) Nutt. , Syn .: Solidago graminifolia (L.) Salisb. ) Is a species of the genus Euthamia (Nutt.) Cass. in the tribe Astereae the family of the daisy family (Asteraceae).

description

Vegetative characteristics

The grass-leaved goldenrod is a perennial plant that can reach heights of 30 to 120 centimeters. It has a creeping, branched rhizome . The stems are upright and only branched in the upper part, the branches stick out at an acute angle. The stems are bare, only rough and densely leafed above with tiny trichomes . They are round, but somewhat angular due to the strips that run down from the leaves. The leaves are linear-lanceolate, pointed at the front, sitting with a narrowed base, more or less clearly three-veined and with entire margins. They are rough with short hair on the edge and on the nerves, but otherwise bald and indistinctly dotted with glands. The middle stem leaves are 5–10 centimeters long and 4–7 millimeters wide.

Grass-leaved goldenrod ( Euthamia graminifolia )

Generative characteristics

The flower heads are numerous but rather small; they are seated or almost seated in groups of 3–7. These groups are in compound clusters at the end of the stem and the side branches. The umbilical clusters of the side branches are about the same height as those of the main stem or they peak over the main stem. The involucre is 4–5 millimeters high and bell-shaped to top-shaped. The bracts are multi-row; they are elongated-lanceolate to linear-lanceolate and yellowish green. The tips of the outer and middle bracts are green and somewhat thickened, their edge is dry-skinned. The flowers are golden yellow. The approximately 20 florets are female; they have a tongue about 2 millimeters long, which barely protrudes beyond the disc-shaped petals. The disk flowers are hermaphroditic. The achenes are about 1 millimeter long and hairy. The pappus consists of a row of hair-thin bristles, it is 2.5–3 millimeters long and white.

Chromosome number

The chromosome number is 2n = 18 with 0–4 B chromosomes.

Occurrence

The grass-leaved goldenrod is native to North America and is a neophyte in Europe and Asia . In North America, it occurs in Canada and in the northern, central, and southeastern states of the United States. It thrives in locations between 0 and 900 meters above sea level. It thrives on banks and in alluvial forests on moist, nutrient-rich loam or clay soils. In Central Europe it is a kind of the societies of the associations Convolvulion and Aegopodion.

Taxonomy

The Grass-leaved Goldenrod, Euthamia graminifolia (L.) Nuttall has the following synonyms: chrysocoma graminifolia L. , Euthamia fastigiata Bush , Euthamia floribunda Greene , Euthamia graminifolia var. Major (Michaux) Moldenke , Euthamia graminifolia var. Nuttallii (Greene) Sieren , Euthamia hirtipes (Fernald) Sieren , Solidago camporum var. tricostata Lunell , Solidago graminifolia (L.) Salisbury , Solidago hirtipes Fernald , Solidago lanceolata L.

literature

Individual evidence

  1. ↑ Euthamia graminifolia in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland.
  2. ^ Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . With the collaboration of Angelika Schwabe and Theo Müller. 8th, heavily revised and expanded edition. Eugen Ulmer, Stuttgart (Hohenheim) 2001, ISBN 3-8001-3131-5 , pp. 909 .

Web links

Commons : Grass-leaved Goldenrod ( Euthamia graminifolia )  - Album with pictures, videos and audio files