Clearweed vs Rockweed

Pilea fontana compared with Pilea microphylla

Key Differences

• Clearweed is Least Concern while Rockweed is Not Evaluated.

Taxonomic Classification

Rank	Clearweed	Rockweed
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order same	Rosales (Roses & Allies)	Rosales (Roses & Allies)
Family same	Urticaceae	Urticaceae
Genus same	Pilea	Pilea
Species	Pilea fontana	Pilea microphylla

Evolutionary Relationship

Clearweed and Rockweed share a common ancestor at the Genus level: Pilea.

Conservation Status

Clearweed

LC — Least Concern

Rockweed

NE — Not Evaluated

Physical Characteristics

Attribute	Clearweed	Rockweed
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Clearweed

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Distributed across Canada and United States.

Rockweed

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Widely distributed across Africa (7 countries), Asia (9 countries), Europe (6 countries), North America (4 countries), Oceania and the Pacific (13 countries), and South America (Brazil, Colombia).

Clearweed

Clearweed, Pilea pumila, is a small, annual herb in the family Urticaceae native to moist, shaded habitats across eastern North America and eastern Asia, including the eastern United States, Canada, eastern China, Japan, and Korea. The species grows in dense colonies in wet woodland, stream banks, floodplain forests, and moist disturbed ground, often forming carpets on rich, moist mineral soils in deeply shaded forest understories. The common name refers to the translucent, watery stems and smooth, bright green leaves, which give the plant an almost glassy appearance. Like its relative stinging nettle, Clearweed is a member of the nettle family but lacks the stinging hairs, making it harmless to touch. The leaves are opposite, broadly ovate with toothed margins, and the plants bear inconspicuous tiny greenish flowers that are wind-pollinated, releasing pollen in small explosive bursts. Clearweed provides food for a variety of insects and invertebrates in moist forest understory communities. The species is not considered threatened and is common across its native range, thriving in the disturbed, humid conditions found along stream margins and in second-growth forest habitats. It is occasionally weedy in gardens and greenhouses.

Shared Countries

Both species can be found in 1 countries:

🇺🇸 United States