Cerastium fontanum (Mouse-ear chickweed)

6/9/2025 · Curtis Farm Preserve, Harpswell, Maine · ≈ 7 × 5″ (16 × 13 cm)

6/9/2025 · Curtis Farm Preserve, Harpswell, Maine · ≈ 4½ × 8″ (12 × 20 cm)

5/23/2021 · Tom and Susan’s, Highland Green, Topsham, Maine · ≈ 3 × 4½″ (8.4 × 11 cm)

Kingdom	Plantae	Plants, but not fungi, lichens, or algae (from Stearn's Botanical Latin)
Subkingdom	Tracheobionta	Vascular plants—plants with a “circulatory system” for delivering water and nutrients
Division	Magnoliophyta	Flowering plants, also known as angiosperms
Class	Magnoliopsida	Dicotyledons—plants with two initial seed leaves
Subclass	Caryophyllidae	Cacti, many other succulents, carnivorous plants, and leadworts
Order	Caryophyllales	Includes cacti, carnations, amaranths, ice plants, and many carnivorous plants
Family	Caryophyllaceae	Pink or carnation family
Genus	Cerastium	From the Greek keras, “a horn,” referring to the shape of the seed capsule
Species	fontanum	Pertaining to springs or fountains, growing in fast-running water