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incised agrimony, incised groovebur

Habit Herbs, 3–11 dm.
Roots

tubers fusiform, thickened.

Stems

with glistening sessile-glandular hairs and ± matted-pubescent to villous and hirsute (hairs scattered, erect, stiff, 2–3 mm).

Leaves

mid cauline stipules ± falcate, margins dentate;

major leaflets 3–15 (mid cauline 9), minor 1–3 pairs;

major leaflet blades ± obovate, terminal largest, largest of these 2.3–4.1 × 1–1.7 cm, margins incised, apex obtuse to acute, abaxial surfaces glistening with sessile-glandular hairs and pubescent to villous and sparsely hirsute (hairs stiff, 2 mm).

Inflorescences

axes often with glistening sessile-glandular hairs and pubescent to villous and hirsute (hairs stiff, erect, 2 mm).

Flowers

usually ± alternate.

Fruiting

hypanthia hemispheric to turbinate, 1.5–2.7 × 1.8–3.3 mm, obscurely sulcate, hooked bristles in 3–4 circumferential rows, proximal row spreading 45–90°, glistening with sessile-glandular hairs (often yellow).

Agrimonia incisa

Phenology Flowering late Jul–Nov.
Habitat Dry to moist, longleaf pine-oak woods, oak-hickory slopes, roadsides, sand or shell maritime thickets
Elevation 0–200 m (0–700 ft)
Distribution
from FNA
AL; FL; GA; LA; MO; MS; SC; TX
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Discussion

Populations of Agrimonia incisa are infrequent and usually widely scattered within the limited range (15–20 currently known). The plants are sometimes abundant where they occur.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 9, p. 314.
Parent taxa Rosaceae > subfam. Rosoideae > tribe Agrimonieae > Agrimonia
Sibling taxa
A. gryposepala, A. microcarpa, A. parviflora, A. pubescens, A. rostellata, A. striata
Name authority Torrey & A. Gray: Fl. N. Amer., 430. (1840)
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