Agrimonia incisa |
Agrimonia microcarpa |
|
---|---|---|
incised agrimony, incised groovebur |
low agrimony, slender groovebur, smallfruit agrimony |
|
Habit | Herbs, 3–11 dm. | Herbs, 3–11 dm. |
Roots | tubers fusiform, thickened. |
tubers ± narrowly oblong, thickened. |
Stems | with glistening sessile-glandular hairs and ± matted-pubescent to villous and hirsute (hairs scattered, erect, stiff, 2–3 mm). |
with short-stipitate-glandular hairs and pubescent to villous and hirsute (hairs scattered, erect, 3–4 mm, stiff). |
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). |
mid cauline stipules ± falcate to ± 1/2-round, margins deeply incised; major leaflets 3–9 (mid cauline 5–7), minor 0 or 1 pair; major leaflet blades obovate to elliptic, terminal largest, largest of these 2.9–7 × 1.7–3.7 cm, margins serrate to dentate, apex obtuse to acute, abaxial surface rarely with glistening sessile-glandular hairs and pubescent to pilose and hirsute (hairs stiff, scattered, 1–2 mm, densest along major veins). |
Inflorescences | axes often with glistening sessile-glandular hairs and pubescent to villous and hirsute (hairs stiff, erect, 2 mm). |
axes pubescent to villous and hirsute (hairs stiff proximally, erect and 2 mm to ascending distally and 1 mm). |
Flowers | usually ± alternate. |
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). |
hypanthia turbinate to obconic, 2.2–4 × 3–4.6 mm, ± deeply sulcate, hooked bristles in 3 circumferential rows, proximal row spreading 45–90°, glandular-hairy (hairs short-stipitate), grooves strigose, ridges rarely sparsely hirsute (sepal bases rarely pubescent along rim). |
Agrimonia incisa |
Agrimonia microcarpa |
|
Phenology | Flowering late Jul–Nov. | Flowering late Jul–Sep. |
Habitat | Dry to moist, longleaf pine-oak woods, oak-hickory slopes, roadsides, sand or shell maritime thickets | Edges, open spaces and thickets, deciduous or mixed pine-deciduous woods |
Elevation | 0–200 m (0–700 ft) | 0–600 m (0–2000 ft) |
Distribution |
AL; FL; GA; LA; MO; MS; SC; TX
|
AL; AR; FL; GA; LA; MS; NC; NJ; OH; OK; PA; SC; TN; TX; VA; WV
|
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.) |
Of conservation concern. The ranges of Agrimonia microcarpa and A. pubescens overlap from North Carolina through Arkansas. Only rarely do populations of either species occur in the range of the other species beyond that contact area. Plants occurring within the range of A. pubescens that resemble A. microcarpa but lack one or more of the above characteristics have been included in A. pubescens. Observations of plants of A. pubescens grown from seed in the garden at Northern Illinois University suggest that some, if not most, plants resembling A. microcarpa are young second-year plants or are under stress. Ambiguous identifications are most clearly resolved when mature fruits are present. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 9, p. 314. | FNA vol. 9, p. 315. |
Parent taxa | Rosaceae > subfam. Rosoideae > tribe Agrimonieae > Agrimonia | Rosaceae > subfam. Rosoideae > tribe Agrimonieae > Agrimonia |
Sibling taxa | ||
Synonyms | A. pubescens var. microcarpa, A. pumila | |
Name authority | Torrey & A. Gray: Fl. N. Amer., 430. (1840) | Wallroth: Beitr. Bot. 1: 39, plate 1, fig. 3. (1842) |
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