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Sticky mouse-ear

Cerastium glomeratum

Family · Caryophyllaceae · Harmless

Sticky mouse-ear (Cerastium glomeratum)Sticky mouse-ear (Cerastium glomeratum)
Didier Descouens, CC BY-SA 4.0 · Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0

The small sticky herb with tiny white flowers that grows in beds, lawns and pavement joints in winter, often beside chickweed. You tell it by touch before you tell it by sight.

Where it grows

Town and roadside · Fields and pasture · Roadsides and waste ground

Also known as

clustered mouse-ear chickweed

In flower

How to tell it

The whole plant is covered in glandular hairs and is clearly sticky: it clings to fingers and clothes. Opposite, oval, hairy leaves, like small ears. White flowers with five notched petals, grouped in a tight cluster at the top.

What it is confused with

Common chickweed

Stellaria media

Harmless confusion

Run a finger over it: mouse-ear is sticky and hairy all over; chickweed is smooth, with a single line of hairs that switches sides at each node. Neither is dangerous, but only one is worth eating.

What it is for

No relevant use

It is here because it grows right beside chickweed, which is eaten, and it is worth knowing that this one is hairy and sticky and the other is smooth with a single line of hairs.

Where it occurs

Iberian Peninsula
Azores
Madeira

Each square is an area with recorded observations of this plant. The lighter background is the set of areas where any of the entries has been observed, and serves as a reference. Note what this is not: it is not where the plant lives, it is where people record it, so trails and towns always look fuller than the mountains. Data from GBIF.

Sources

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