Solidago caesia Linnaeus

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

sept_23_09.gthmb can't be loaded. Solidago caesia is a perennial plant, native to North America, 1 to 4 feet high, with flower heads in small isolated clusters strung out along the stem, usually on a single stem. The plant Asteraceae family.


The genus name is said to be first from the Latin adjective solidus that means dense, solid, massive, compact, substantial, and, in a figurative sense, firm, and from the Latin verb agere of first person singular present indicative ago that means something like to do and to make, so that Solidago would refer to the plant's supposed ability to heal.

In latin, cęsius means blue-green, greenish-blue. More exactly. it was used by the Romans in locutions like cęsii oculi or virga cęsia for eyes (oculi), or the eyes of a virgin (virgo) to speak of eyes were the blue was the dominant color or of a blue leaning towards an other color, green, violet, i.e. the French adjective pers. The epithet refers then to the stem of the plant that is usually, but not always, blue-green.

Common names

Some of the vernacular names of Solidago caesia are: Blue stemmed Goldenrod, Blue-Stemmed Goldenrod, Bluestem, Wreath Goldenrod, Axillary Goldenrod and Woodland Goldenrod.

The standard French vernacular name is Verge d'or bleuātre.


Solidago caesia has also been known as: oct_02_05.gthmb can't be loaded.


Solidago caesia is one of the Solidago somewhat easy to identify, by its habitat, wood usually, by its small clusters of yellow flower heads in the leaf axil in the upper third of the stem, and by its long, lance-shaped leaves. It could eventually be confused with: but it is not difficult to differentiate Solidago caesia from the above three species.


Solidago caesia is a slender plant, wandlike, with showy large ray florets in tufts arising from the axils of the leaves along the stem.


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Flower heads



One can find Solidago caesia in rich soil of moist open woods, thickets, clearings, forest edges.


map_na.jpg can't be loaded. Solidago caesia is found in Canada, from Ontario to Nova Scotia. It is also found in the eastern half of the USA, west to Texas, Oklahoma, Missouri, Illinois and Wisconsin. The map, from Flora of North America shows the US States and Canadian provinces where Solidago caesia can be found.


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, stem

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The leaves were scanned at 300 dpi, and the picture dimensions were then reduced by one half (surface by one quarter). This allows to get the leaves dimensions.

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Flower heads

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