Cerastium glomeratum-Sticky Mouse-Ear Chickweed

Cerastium glomeratum (Sticky Mouse-Ear Chickweed) on 4-7-20, #684-10.

Sticky Mouse-Ear Chickweed, Clammy Chickweed, Mouse-Ear Chickweed, Sticky Chickweed, Glomerate Mouse-Eared Chickweed

Cerastium glomeratum

ker-RAS-tee-um  glahm-er-AH-tum

Synonyms of Cerastium glomeratumAlsine glomerata (Thuill.) E.H.L.Krause, Cerastium acutatum Suksd., Cerastium apetalum Dumort., Cerastium arenosum Kit., Cerastium brachycarpum Stapf, Cerastium constantinopolitanum Nyman, Cerastium fontanum subsp. triviale (E.H.L.Krause) Jalas, Cerastium fulvum Raf., Cerastium glomeratum var. brachycarpum L.H.Zhou & Q.Z.Han, Cerastium glomeratum var. robustum Pamp., Cerastium hirsutum Muhl., Cerastium mauritianum Bouton ex Baker, Cerastium membranaceum Jacquem. ex Hook.f., Cerastium minutulum Des Moul. ex Steud., Cerastium ovale Pers., Cerastium pseudoviscosum Schur, Cerastium rotundifolium Fisch., Cerastium stevenii Schischk., Cerastium tenellum Gaudin ex Ser., Cerastium viscosioides Candargy, Cerastium vulgatum L., Stellaria glomerata Jess., Stellaria vulgata (L.) Link

Cerastium glomeratum Thuill. is the correct and accepted scientific name for the Sticky Mouse-Ear Chickweed. It was named and described as such by Jean Louis Thuillier in Flora des Environs de Paris in 1799.

Accepted infraspecific name: Cerastium glomeratum subsp. megacalyx Kamelin

The genus, Cerastium L., was described as such by Carl von Linnaeus in the first volume of the first edition of Species Plantarum in 1753. Plants of the World Online lists the genus as Cerastium Dill. ex L. meaning Mr. Linnaeus used a previous description by Johann Jacob Dillenius when writing about it.

Plants of the World Online lists 211 species in the Cerastium genus (as of 4-9-20 when I am updating this page). The genus is a member of the Caryophyllaceae Family with a total of 97 genera. Those numbers could change periodically as updates are made.

Distribution map of Cerastium glomeratum from Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://www.plantsoftheworldonline.org/. Retrieved on April 9, 2020.

The above distribution map for Cerastium glomeratum is from Plants of the World Online. The map on the USDA Plants Database for North America is a little different. It includes a few more states and doesn’t have a few that are shown on POWO.

There are several links at the bottom of the page for further reading and to help with positive ID.

Cerastium glomeratum (Sticky Mouse-Ear Chickweed) on 4-7-20, #684-11.

Spring is a great time of year when the early wildflowers start blooming. I had noticed a different plant I needed to take photos of and identify when I spotted several colonies of this one. Of course, I had to take photos of them as well. I identified this species as Cerastium glomeratum. It has many common names including Sticky Mouse-Ear Chickweed, Clammy Chickweed, Mouse-Ear Chickweed, Sticky Chickweed, Glomerate Mouse-Eared Chickweed and probably others. It just depends on which website you look at. There are a few other Cerastium species in Missouri but the iNaturalist drag and drop feature suggested C. glomeratum and I think they hit the nail on the head.


Cerastium glomeratum (Sticky Mouse-Ear Chickweed) on 4-7-20, #684-12.

Cerastium glomeratum is an annual wildflower with ascending to erect stems, 4-10 inches tall, with glandular and non-glandular hairs, purplish to light green. The leaves and stems may feel sticky from glandular secretions. The base of the plant has a cluster of leaves.


Cerastium glomeratum (Sticky Mouse-Ear Chickweed) on 4-7-20, #684-13.

Stems terminate with a cluster of 5-petaled flowers with 5 green sepals, 10 stamens and a pistil with five styles. The petals have slits in the middle… The sepals are also very hairy.


Cerastium glomeratum (Sticky Mouse-Ear Chickweed) on 4-7-20, #684-14.

The small leaves, about 3/4” long, grow in an opposite manner on the stems and are oblong-ovate and taper to a point. The leaves have no leaf stems (sessile) and are very hairy (pubescent).


Cerastium glomeratum (Sticky Mouse-Ear Chickweed) on 4-7-20, #684-15.

The inflorescence can produce from 3 to 50 flowers with short cymes. The petals (sepals) can sometimes be red-tipped.


Cerastium glomeratum (Sticky Mouse-Ear Chickweed) on 4-7-20, #684-16.

Very hairy stems that are purplish to light green. This one is starting to branch out at the leaf node.


Cerastium glomeratum (Sticky Mouse-Ear Chickweed) on 4-7-20, #684-17.

You must admit this is a neat plant with deeply notched flowers.


Cerastium glomeratum (Sticky Mouse-Ear Chickweed) on 4-7-20, #684-18.

Although similar at a distance to its cousin the Common Chickweed (Stellaria media), its cylindrical capsule is one feature that puts it into a different genus.

In Nepal, the juice of Cerastium glomeratum is applied to the forehead to treat headaches and dropped into the nostrils treats nosebleeds.

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 most have pages listed on the right side of the blog. 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 horticulturalist 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

NOTE: Plants of the World Online is the most up-to-date database. It is very hard for some to keep with name changes these days so you may find a few discrepancies between the websites. Just be patient. Hopefully, someday they will be in harmony. 🙂