Hairy White Oldfield Aster, Frost Aster, Hairy Aster, Awl-Aster, Michaelmas Daisy, Steelweed
(Symphyotrichum pilosum var. pilosum)
Synonyms of Symplyotrichum pilosum (2) (Updated on 11-1-21 from Plants of the World Online): Aster ericoides var. pilosus (Willd.) Porter, Aster pilosus Willd.
Synonyms of Symphyotrichum pilosum var. pilosum (9) (Updated on 12-26-21 from POWO): Aster chrysogonii Sennen, Aster ericoides var. platyphyllus Torr. & A.Gray, Aster ericoides f. villosus (Torr. & A.Gray) Voss, Aster ericoides var. villosus Torr. & A.Gray, Aster juniperinus E.S.Burgess, Aster pilosus var. demotus S.F.Blake, Aster pilosus var. platyphyllus S.F.Blake, Aster pilosus f. pulchellus Benke, Aster villosus Michx.
Symphyotrichum pilosum (Willd.) G.L.Nesom is the accepted scientific name for this species of Symphyotrichum. It was named and described as such by Guy L. Nesom on Phytologia in 1995. It was previously named and described as Aster pilosus by Carl Ludwig Willdenow in the fourth edition of Species Plantarum in 1803.
Accepted Infraspecific Names (2) (Updated on 12-26-21 from POWO): *Symphyotrichum pilosum var. pilosum (autonym), Symphyotrichum pilosum var. pringlei (A.Gray) G.L.Nesom. *When infraspecific taxon are named, an autonym (“type-specimen”) is automatically generated whose description is closest to the (original) species. All have their own list of synonyms… Symphyotrichum pilosum var. pilosum is found in Missouri where I live.
The genus, Symphyotrichum Nees, was named and described as such by Christian Gottfried Daniel Nees von Esenbeck in Genera et Species Asterearum in 1832.
As of 12-26-21 when this page was last updated, Plants of the World Online by Kew lists 97 species in the Symphyotrichum genus. It is a member of the plant family Asteraceae with 1,678 genera. Those numbers could change as updates are made on POWO.
The above distribution map for Symphyotrichum pilosum is from Plants of the World Online. Areas in green are where the species is native and purple where it has been introduced. The map on the USDA Plants Database is similar but also includes Texas and Louisiana. You can click on the links to view the subordinate taxa’s own maps.
The map on iNaturalist shows where members have made observations. Anyone can join and it is a great website to confirm and share your observations. The maps on iNaturalist are continually updated as members post new observations.
THERE ARE SEVERAL LINKS AT THE BOTTOM OF THE PAGE FOR FURTHER READING AND TO HELP WITH A BETTER POSITIVE ID.
Symphyotrichum pilosum is a common sight on the farm and throughout the countryside. Some years more than others. I have difficulty identifying some species in the genus, but this one seems fairly easy with its smaller flowers, hairy stems, and narrow leaves. Of course, there is more to it than when it comes to making a proper ID.
This species has several common names, some of which are also the common names of other species.
I apologize for not writing descriptions at the moment. I am busy updating plant pages and writing new pages for wildflowers I identified over the summer (plus adding more photos to previously published pages). Writing descriptions in my own words can be a lengthy process, so I decided to just make new pages and come back later and write the descriptions. This is a winter project but sometimes I get behind and it takes longer. I need to continually update because plant names change, the number of species and genera fluctuates, and I want to be as accurate as I can. There are several very good websites below that can help with a positive ID. We are all a work in progress.
I have enjoyed photographing and learning about the many wildflowers growing on the farm and other areas. My farm is in Windsor, Missouri in Pettis County (Henry County is across the street and Benton and Johnson aren’t far away). I have grown over 500 different plants and identified over 100 species of wildflowers (most have pages listed on the right side of the page). I am not an expert, botanist, or horticulturalist. I just like growing, photographing, and writing about my experience. I rely on several websites for ID and a few horticulturalists I contact if I cannot figure them out. Wildflowers can be somewhat variable from location to location, so sometimes it gets a bit confusing. If you see I have made an error, please let me know so I can correct what I have written.
I hope you found this page useful and be sure to check the links below for more information. They were written by experts and provide much more information. Some sites may not be up-to-date but they are always a work in progress. If you can, I would appreciate it if you would click on the “Like” below and leave a comment. It helps us bloggers stay motivated. You can also send an email to me at firstname.lastname@example.org. I would enjoy hearing from you especially if you notice something is a bit whacky.
FOR FURTHER READING:
PLANTS OF THE WORLD ONLINE (GENUS/SPECIES)
INTERNATIONAL PLANT NAMES INDEX (GENUS/SPECIES)
FLORA OF NORTH AMERICA (GENUS/SPECIES)
WORLD FLORA ONLINE (GENUS/SPECIES)
USDA PLANTS DATABASE
DAVE’S GARDEN ARTICLE
MISSOURI BOTANICAL GARDEN
MSU-MIDWEST WEEDS AND WILDFLOWERS
MISSOURI DEPARTMENT OF CONSERVATION
ARKANSAS NATIVE PLANT SOCIETY
KANSAS WILDFLOWERS AND GRASSES
NORTH CAROLINA STATE UNIVERSITY
LADY BIRD JOHNSON WILDFLOWER CENTER
UNIVERSITY OF WISCONSIN
MARYLAND BIODIVERSITY PROJECT
UNIVERSITY OF WASHINGTON-BURKE HERBARIUM
NOTE: The data (figures, maps, accepted names, etc.) may not match on these websites. It depends on when and how they make updates and when their sources make updates. Some websites have hundreds and even many thousands of species to keep up with. Accepted scientific names change periodically and it can be hard to keep with as well. Some of the links may use a name that is a synonym on other sites. In my opinion, Plants of the World Online by Kew is the most reliable and up-to-date plant database and they make updates on a regular basis. I make updates “at least” once a year and when I write new pages or add new photos but I do get behind. We are all a work in progress. 🙂