Carrington's Scalewort vs Clusterspike False Indigo

Radula carringtonii compared with Amorpha crenulata

Key Differences

• Carrington's Scalewort is Near Threatened while Clusterspike False Indigo is Critically Endangered.

Taxonomic Classification

Rank	Carrington's Scalewort	Clusterspike False Indigo
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum	Marchantiophyta (liverwort)	Magnoliophyta (Flowering Plants)
Class	Jungermanniopsida (Jungermanniopsida)	Magnoliopsida (Dicots)
Order	Porellales (Porellales)	Fabales (Legumes & Allies)
Family	Radulaceae	Fabaceae
Genus	Radula	Amorpha
Species	Radula carringtonii	Amorpha crenulata

Evolutionary Relationship

Carrington's Scalewort and Clusterspike False Indigo share a common ancestor at the Kingdom level: Plantae. (Plants)

Conservation Status

Carrington's Scalewort

NT — Near Threatened

Clusterspike False Indigo

CR — Critically Endangered

Physical Characteristics

Attribute	Carrington's Scalewort	Clusterspike False Indigo
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Carrington's Scalewort

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Portugal. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Clusterspike False Indigo

Habitat

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

Carrington's Scalewort

The Carrington's Scalewort (Radula carringtonii) is a species in the genus Radula. It is currently classified as Near Threatened on the IUCN Red List. Native to Europe, inhabiting ecosystems characteristic of the region.

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.