Euthamia graminifolia (L.) Nuttall

Remark The words or terms in red (actually dark orange) in the text are defined in a glossary.


aug_09_09.gthmb can't be loaded. Euthamia graminifolia is is a native perennial herb that spreads from a branching rhizome to form large patches. It grows to 1 m tall in dry to moist old fields and meadows, and on damp sandy shores. It's commonly at or near the water table and is associated with past disturbance on alkaline soils. It was previously commonly known as Solidago graminifolia; it belongs to the Asteraceae family.

Name

In Greek, the adverb ευ (eu) means well, regularly and θαμειοσ (thameios) means numerous, frequent, so that Euthamia would refer to the dense inflorescence of the genus.

In Latin, gramineus means grass-like and folia means leaves hence the graminifolia epithet since Euthamia graminifolia has leaves that are a bit grass-like.

Common names

Some of the vernacular names of Euthamia graminifolia are : Grass-leaved Goldenrod, Common Flat-topped Goldenrod, Narrow-leaved Goldenrod, Lanceleaf Goldenrod, Grassleaf Goldenrod, Flat-topped Bushy Goldenrod, Flattop Goldenrod and Fragrant Goldenrod. The French vernacular name is Verge d'or à feuilles de graminée.

Synonyms

Some botanists recognize four varieties of Euthamia graminifolia: The major variety is distinguished by the usually acute-tipped leaves which are obscurely glandular-punctate, and the flower heads containing 20 to 35 florets. The graminifolia variety is similar to the major variety except the leaves have attenuate tips and are conspicuously punctate under magnification. Other varieties are distinguished in having heads with 12 to 20 florets, or narrower, conspicuously punctate leaves with only 1-3 nerves, etc. Other botanists lump the four varieties together.

Euthamia graminifolia that was before in the Solidago genus has then (also) been known as:

Euthamia is still often listed in the Solidago genus; in February 2006, Euthamia graminifolia returned 10 400 results on Google while Solidago graminifolia returned 20 300 results!

Identification

Euthamia graminifolia is quite easy to identify:

Description

Euthamia graminifolia is a rhizomatous erect perennial, from 2 to 3 feet tall. Sometimes it is slender and little branched, while at other times it branches frequently, creating a bushy appearance. The root system is fibrous, and new plants develop vegetatively from rhizomes.

Stems

Leaves

Flower heads

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Fruits

Habitat

Fresh wet meadows, springs, fens, seepage areas, shores and stream banks, black soil prairies, edges of marshes, abandoned fields, and ditches along railroads often where on sandy or gravelly soil.

Distribution

map_na.jpg can't be loaded. In Canada, Euthamia graminifolia is found from NewFoundland to British Colombia. It is also found in many States of the USA, the States along the Canadian Border, the north-eastern States down to Virginia, the Prairie States, many southern States: Mississippi, Alabama, Georgia. The map shows the Canadian Provinces, the Canadian Territory and the USA states where the plant can be found.

Gallery

The photos of the gallery were taken either with one of the following: The title in the window shows the date when the picture was taken, i.e. jan_30_06... would mean that the photo was taken on the 30th of January, the 06 is for the 6th picture taken that day.

The month, day and picture number might be followed by a letter:

and if there is no letter it's obviously the Minolta.

Click on the thumbnails to get larger view. The original photos are usually in TIFF format, the photos shown are generally in JPEG format, usually of dimension one half (surface one quarter) for loading time reduction.

Plants, flower heads, leaves, seeds

aug_09_09.mthmb cannot be loaded. aug_09_08.mthmb cannot be loaded. jul_19_01.mthmb cannot be loaded.
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The leaves were scanned at 300 dpi; this allows to measure their dimensions.

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