Clusterspike False Indigo vs Painted Lady

Amorpha crenulata compared with Vanessa cardui

Key Differences

• Clusterspike False Indigo is Critically Endangered while Painted Lady is Least Concern.

Taxonomic Classification

Rank	Clusterspike False Indigo	Painted Lady
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Arthropoda (Arthropods)
Class	Magnoliopsida (Dicots)	Insecta (Insects)
Order	Fabales (Legumes & Allies)	Lepidoptera (Butterflies & Moths)
Family	Fabaceae	Nymphalidae (Brush-footed Butterflies)
Genus	Amorpha	Vanessa
Species	Amorpha crenulata	Vanessa cardui

Conservation Status

Clusterspike False Indigo

CR — Critically Endangered

Painted Lady

LC — Least Concern

Physical Characteristics

Attribute	Clusterspike False Indigo	Painted Lady
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Clusterspike False Indigo

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Painted Lady

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Widely distributed across Africa (South Africa), Asia (Cyprus, Taiwan), Europe (41 countries), and North America (Canada, United States).

Clusterspike False Indigo

Amorpha crenulata, known as clusterspike false indigo or crenulate lead plant, is a critically endangered flowering shrub in the family Fabaceae with a highly restricted distribution confined to Miami-Dade County in southern Florida, USA. This species represents one of North America's rarest plants, with remaining populations numbering in the hundreds of individuals occurring in pine rockland habitat, an ecosystem itself ranked among the most imperiled in the United States. Pine rocklands are fire-dependent communities on exposed oolitic limestone, characterized by an open canopy of slash pine over diverse understory, and have been reduced to less than two percent of their historical extent by urban development in the Miami metropolitan area. Amorpha crenulata produces elongated spikes of small purple flowers typical of the genus and was historically more widespread across the Miami Rock Ridge before land development eliminated most habitat. Current populations exist primarily within Everglades National Park and a few private preserves. Its Critically Endangered status reflects the tiny remaining population, extreme habitat restriction, ongoing threats from urbanization, altered fire regimes, and sea-level rise that threatens low-elevation limestone habitats. Conservation efforts focus on habitat protection, controlled burning to maintain pine rockland structure, and ex situ seed banking.

Painted Lady

Painted Lady (Vanessa cardui) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.