Amphicarpum amphicarpon
Common Name(s):
Previously known as:
- Amphicarpum purshii
- Phonetic Spelling
- am-fi-CARP-uhm am-fi-CARP-on
- Description
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Pursh's blue maidencane is an annual grass in the Poaceae (grass) family. It was named after botanist Frederick Pursh in 1950.
Its growth habit is quite similar to peanuts, with the plant producing subterranean fruits early in the growing season and aerial fruits later in the growing season. Both types of fruits are fertile.
It is found in sandy pine forests, wet pine savannas, wetlands, ponded locations, and small bays along the shores and rivers of the eastern United States from New Jersey to Georgia. It is typically found in locations where sphagnum moss grows. Trampling along the shoreline by ATV's and foot traffic, and the presence of overgrowth are considered threats to the survival of this plant. In North Carolina, it can be found in numerous coastal counties, however, it is considered as a Watch List species.
Its flowers occur in scaly structures called spikelets and are raised above the leaves on narrow, erect branches. They appear in the form of a panicle, with lengths of 8". Its leaves, sheaths and blades are all pubescent. The lower blades can reach heights of up to 30", with a width of one-half inch. The upper leaves are narrower.
Insects, Diseases, and Other Plant Problems: Quick to burn during forest fires.
- See this plant in the following landscape:
- Cultivars / Varieties:
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- Tags:
- Cultivars / Varieties:
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Attributes:
- Genus:
- Amphicarpum
- Species:
- amphicarpon
- Family:
- Poaceae
- Uses (Ethnobotany):
- Wetlands
- Life Cycle:
- Annual
- Country Or Region Of Origin:
- Eastern U.S.A.
- Distribution:
- North America, northeastern USA and southeast
- Fire Risk Rating:
- high flammability
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Whole Plant Traits:
- Plant Type:
- Annual
- Native Plant
- Ornamental Grasses and Sedges
- Habit/Form:
- Ascending
- Erect
- Growth Rate:
- Medium
- Maintenance:
- Medium
- Texture:
- Medium
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Cultural Conditions:
- Light:
- Full sun (6 or more hours of direct sunlight a day)
- Soil Texture:
- Sand
- Soil Drainage:
- Occasional Flooding
- Occasionally Wet
- Available Space To Plant:
- Less than 12 inches
- NC Region:
- Coastal
- USDA Plant Hardiness Zone:
- 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b, 10a, 10b, 11a, 11b
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Fruit:
- Display/Harvest Time:
- Fall
- Summer
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Flowers:
- Flower Color:
- Brown/Copper
- Green
- Flower Inflorescence:
- Insignificant
- Panicle
- Flower Bloom Time:
- Fall
- Summer
- Flower Size:
- < 1 inch
- Flower Description:
- Two types of flowers are produced by this plant. The aerial flowers produce conventional seeds, while underground self-fertile flowers produce underground seeds.
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Leaves:
- Leaf Color:
- Green
- Leaf Type:
- Sheath
- Leaf Shape:
- Lanceolate
- Linear
- Hairs Present:
- Yes
- Leaf Length:
- > 6 inches
- Leaf Width:
- < 1 inch
- Leaf Description:
- The linear or lanceolate hairy leaves are mostly basal.
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Stem:
- Stem Is Aromatic:
- No
- Stem Surface:
- Hairy (pubescent)
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Landscape:
- Landscape Location:
- Naturalized Area
- Pond
- Slope/Bank
- Landscape Theme:
- Native Garden
- Rain Garden