Agrimonia gryposepala

Wallroth

Beitr. Bot. 1: 49, plate 1, fig. 8. 1842

Common names: Common agrimony aigremoine à sépales crochus
Selected by author to be illustrated
Synonyms: Agrimonia eupatoria var. parviflora HookerA. macrocarpa (Focke) RydbergA. parviflora var. macrocarpa FockeEupatorium gryposepalum (Wallroth) Nieuwland
Treatment appears in FNA Volume 9. Treatment on page 316. Mentioned on page 313, 314, 317.
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Herbs, 3.5–15 dm. Roots: tubers absent. Stems with glistening stipitate-glandular hairs and hirsute (hairs scattered, erect, 2 mm). Leaves: mid cauline stipules ± 1/2-ovate, margins incised; major leaflets 3–9 (mid cauline 5–7), minor 1–4, rarely 0–1, pairs; major leaflet blades ovate to elliptic or rhombic, terminal largest, largest of these 2.4–10.5 × 1.4–5.6 cm, margins serrate, apex acute, sometimes acuminate, abaxial surface usually with glistening stipitate-glandular hairs and hirsute (hairs scattered, 0.5–2 mm). Inflorescences: axes with glistening stipitate-glandular hairs and hirsute (hairs erect, 2 mm). Flowers usually ± alternate. Fruiting hypanthia turbinate to broadly campanulate, rarely broadly obconic, 2.3–5.8 × 2.8–6.2 mm, deeply to sometimes obscurely sulcate, hooked bristles in 4–5 circumferential rows, proximal row reflexed, with glistening stipitate-glandular hairs and sparsely hirsute. 2n = 56.

Phenology: Flowering Jul–mid Aug[–Mar].
Habitat: Edges, open spaces, and thickets, deciduous or mixed pine-deciduous woods
Elevation: 0–2000[–3000] m

Distribution

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B.C., Man., N.B., N.S., Ont., P.E.I., Que., Ariz., Ark., Calif., Colo., Conn., Del., Ga., Ill., Ind., Iowa, Kans., Ky., Maine, Md., Mass., Mich., Minn., Mo., Mont., Nebr., N.H., N.J., N.Mex., N.Y., N.C., N.Dak., Ohio, Oreg., Pa., R.I., S.Dak., Tenn., Vt., Va., Wash., W.Va., Wis., Wyo., Mexico (Chiapas, Coahuila, Nuevo León), Central America (Guatemala).

Discussion

In the mountains of the western United States, Mexico, and Guatemala, populations of Agrimonia gryposepala are widely scattered. The species is absent from the Great Basin. Plants with stems and abaxial leaflet surfaces more densely hirsute and leaflets less than 7 cm are sometimes found in the mountains of the western United States and are the predominant morphs of A. gryposepala in Chiapas and Guatemala. We have seen only three specimens from Coahuila and Nuevo León; the relative occurrence of the morphs there cannot be determined.

References

None.

Lower Taxa

No lower taxa listed.