|Scientific name:||Epilobium collinum C.C.Gmel.|
|English name:||Hill Willow-herb|
|Family:||Onagraceae, Willowherb Family, Dunörtsväxter|
|Life form:||Perennial herb|
|Stems:||Height 10-40 cm; unbranched-base branched, with arched hairs, usually reddish|
|Leaves:||Opposite; short stalked; elliptic-ovate, with roundish tips, sparseley toothed, with arched hairs especially along leaf veins|
|Flowers:||Inflorescence a branched raceme; light purple corolla, 4 petals with notched tips; 4 sepals; 8 stamens; 4-lobed stigmas|
|Flowering Period:||July- August|
|Habitat:||Dry rocky outcrops, fissures and shelves, meadows, river banks, banks, gravel pits, gardens, wasteland|
Derivation of the botanical name:
Epilobium from the Byzantine Greek word epi, ἐπί, "upon", lobos, λοβός, λόβος "lobe", "a pod or capsule," as the flower and capsule appear together, the corolla being borne on the end of the ovary.
collinum, Latin collis, a hill; pertaining to hills.