Symphyotrichum pilosum (Hairy White Oldfield Aster)

Symphyotrichum pilosum (Hairy White Oldfield Aster) on 9-30-21, 837-12.

Hairy White Oldfield Aster, Frost Aster, Hairy Aster, Awl-Aster, Michaelmas Daisy, Steelweed

Symphyotrichum pilosum

sim-fy-oh-TRY-kum  pil-OH-sum

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.

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.

The genus, Symphyotrichum Nees, was named and described as such by Christian Gottfried Daniel Nees von Esenbeck in Genera et Species Asterearum in 1832.

Plants of the World Online by Kew lists 95 species in the Symphyotrichum genus (as of 10-3-21 when this page was last updated). It is a member of the plant family Asteraceae with 1,677 genera. Those numbers could change as updates are made on POWO.

Distribution map of Symphyotrichum pilosum from Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://www.plantsoftheworldonline.org/. Retrieved on November 1, 2021.

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. 

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 (Hairy White Oldfield Aster) on 9-30-21, 837-13.

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.

I apologize for not writing descriptions at the moment, but I am making updates, adding more photos, and writing new pages. This is a winter project but sometimes I get behind. There are several links at the bottom of the page that will help with a positive ID.

This species has several common names, some of which are also the common names of other species.

Symphyotrichum pilosum (Hairy White Oldfield Aster) on 9-30-21, 837-14.

 

Symphyotrichum pilosum (Hairy White Oldfield Aster) on 9-30-21, 837-15.

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 thebelmontrooster@yahoo.com. 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)
TROPICOS (GENUS/SPECIES)
FLORA OF NORTH AMERICA (GENUS/SPECIES)
WORLD FLORA ONLINE (GENUS/SPECIES)
WIKIPEDIA (GENUS/SPECIES)
USDA PLANTS DATABASE
DAVE’S GARDEN
DAVE’S GARDEN ARTICLE
MISSOURI PLANTS
MISSOURI BOTANICAL GARDEN
MSU-MIDWEST WEEDS AND WILDFLOWERS
MISSOURI DEPARTMENT OF CONSERVATION
iNATURALIST
WILDFLOWER SEARCH
ARKANSAS NATIVE PLANT SOCIETY
ILLINOIS WILDFLOWERS
MINNESOTA WILDFLOWERS
KANSAS WILDFLOWERS AND GRASSES
NORTH CAROLINA STATE UNIVERSITY
GO BOTANY
LADY BIRD JOHNSON WILDFLOWER CENTER
UNIVERSITY OF WISCONSIN
MARYLAND BIODIVERSITY PROJECT
GARDENIA
U.S. WILDFLOWERS
UNIVERSITY OF WASHINGTON-BURKE HERBARIUM
ONTARIO WILDFLOWERS

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. 🙂