Agrimonia striata
Britton's agrimony, grooved agrimony, Grooved Agrimony
no rights reserved, uploaded by Étienne Lacroix-Carignan · CC0
Family: Rosaceae · Type: Herb · Native
Agrimonia striata (Britton's agrimony) is a native California herb in the Rosaceae family, recognized by key differences in fruit sepal tip morphology and bristle arrangement.
Britton's agrimony is a California native perennial found in the Oak Glen area of the San Bernardino Mountains and the White Mountains in moist woodland habitats at elevations of 1,000 to 3,000 meters. Flowering from June to August, this plant produces yellow flowers in elongated clusters 8 to 60 centimeters long with 10 to 60 individual blooms. Growing with tall stems 20 to 150 centimeters high, it features distinctive glandular and non-glandular hairs along its stems and branches. Its compound leaves are impressive, with 3 to 11 diamond-shaped to elliptic leaflets reaching up to 11 centimeters long, covered in soft, shaggy straight hairs. The fruit develops a small hypanthium 2 to 7 millimeters long with distinctive bristles arranged in three rows.
Identification and appearance
Key characters: 1 sympatric species; key differences in fruit sepal tip morphology and bristle arrangement
Habitat and range
Habitat: Moist places, generally in woodland
Elevation: 1000-3000 m
Outside California: to eastern North America, mountains of Mexico
Bloom period
Agrimonia striata blooms Jun-Aug.
How to tell it apart
vs Geum: Agrimonia carries small yellow flowers along a slender spike-like raceme and a top-shaped fruit ringed with hooked bristles; Geum has larger, few, saucer-shaped flowers and a rounded head of plumed or hooked achenes.; vs Drymocallis: Agrimonia has interrupted-pinnate leaves (large leaflets alternating with tiny ones) and a bur fruit; Drymocallis bears its flowers in open glandular cymes with dry, non-bur fruit.; vs Acaena: Both make hooked burs, but Agrimonia is an erect leafy-stemmed herb with a tall flower spike; Acaena is a low mat-former with flowers in dense round heads.; vs Aruncus: Agrimonia is modest with yellow flowers and burred fruit; Aruncus (goatsbeard) is large with 2--3-pinnate leaves and huge plumes of tiny white flowers.; vs Sanguisorba: Agrimonia scatters its flowers along an elongate raceme with hooked fruit; Sanguisorba (burnet) packs petal-less flowers into a dense oblong head.
Frequently asked questions
Is Agrimonia striata native to California?
Yes. Agrimonia striata is native to California (recorded as native).
When does Agrimonia striata bloom?
Agrimonia striata blooms Jun-Aug.
What plant family does Agrimonia striata belong to?
Agrimonia striata is in the Rosaceae family, genus Agrimonia.
What habitat does Agrimonia striata grow in?
Agrimonia striata grows in Moist places, generally in woodland.
Related species
Other California species in the same genus, family, or bioregion.
Sources: Jepson eFlora · CalPhotos
Last updated 2026-10-07
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.