partridge pea

Chamaecrista fasciculata

Its leaves are sensitive to touch and will slowly fold inward when brushed, a defense mechanism against herbivores known as thigmonasty.

Scientific name
Chamaecrista fasciculata
Taxonomy
Plantae › Tracheophyta › Magnoliopsida › Fabales › Fabaceae › Chamaecrista
IUCN Red List status
Least Concern
Population trend
stable
Biome
grassland
Habitat
Dry to moist prairies, meadows, fields, roadsides, and open upland woods.
Diet
Autotrophic (photosynthetic); draws nutrients and fixes nitrogen from the soil.
Range
Eastern United States, Central United States, Southern Canada
Size
0.3 to 1.2 meters (1 to 4 feet) tall
Lifespan
1 year (annual)
Active
diurnal
Threats
Habitat loss to intensive agriculture, over-application of broadleaf herbicides, and suppression of natural fire regimes.
Safe to approach?
Harmless to touch and safe to observe closely. Do not ingest any part of the plant, as the seeds contain compounds that can cause stomach distress. If ingested, monitor for gastrointestinal symptoms and seek medical advice if severe.

Chamaecrista fasciculata , the partridge pea , is a species of legume native to most of the eastern United States. It is an annual which grows to approximately 0.5 meters tall. It has bright yellow flowers from early summer until first frost, with flowers through the entire flowering season if rainfall is sufficient.

Photo: Fritz Flohr Reynolds, CC-BY-SA, via iNaturalist

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