Clusterspike False Indigo vs Common box

Amorpha crenulata compared with Buxus sempervirens

Key Differences

• Clusterspike False Indigo is Critically Endangered while Common box is Not Evaluated.

Taxonomic Classification

Rank	Clusterspike False Indigo	Common box
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order	Fabales (Legumes & Allies)	Buxales (Buxales)
Family	Fabaceae	Buxaceae
Genus	Amorpha	Buxus
Species	Amorpha crenulata	Buxus sempervirens

Evolutionary Relationship

Clusterspike False Indigo and Common box share a common ancestor at the Class level: Magnoliopsida. (Dicots)

Conservation Status

Clusterspike False Indigo

CR — Critically Endangered

Common box

NE — Not Evaluated

Physical Characteristics

Attribute	Clusterspike False Indigo	Common box
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.

Common box

Habitat

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

Range

Widely distributed across Africa (Libya, Sao Tome and Principe), Asia (Armenia, India, Taiwan), Europe (15 countries), North America (United States), and South America (Colombia, Ecuador).

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.

Common box

The common box (<em>Buxus sempervirens</em>) is a slow-growing evergreen shrub or small tree with one of the widest distributions of any species in its genus, occurring across Africa, Asia, Europe, North America, and South America. It typically inhabits diverse terrestrial ecosystems, from limestone hillsides and rocky slopes to woodland understories and cultivated gardens. The common box has not been formally evaluated on the IUCN Red List. Long valued in horticulture and topiary, this species is widely cultivated and naturalized far beyond its native range in southern Europe, western Asia, and northern Africa. Its dense, hard wood is among the heaviest produced by any European tree, historically used for woodworking and engraving. The species often forms dense thickets in natural settings, providing important shelter for invertebrates and small vertebrates. Biological traits of this species remain poorly documented in the scientific literature.