Clusterspike False Indigo vs Common Lime

Amorpha crenulata compared with Tilia europaea

Key Differences

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

Taxonomic Classification

Rank	Clusterspike False Indigo	Common Lime
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order	Fabales (Legumes & Allies)	Malvales (Malvales)
Family	Fabaceae	Malvaceae
Genus	Amorpha	Tilia
Species	Amorpha crenulata	Tilia europaea

Evolutionary Relationship

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

Conservation Status

Clusterspike False Indigo

CR — Critically Endangered

Common Lime

NE — Not Evaluated

Physical Characteristics

Attribute	Clusterspike False Indigo	Common Lime
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 Lime

Habitat

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

Range

Found across Europe (4 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.

Common Lime

<em>Tilia europaea</em>, the common lime or European linden, is a large deciduous tree in the family Malvaceae, occurring naturally as a hybrid between <em>Tilia cordata</em> and <em>Tilia platyphyllos</em>. It is widely distributed across Europe and has been introduced to North America, where it is commonly planted as a street and park tree. The common lime typically grows in temperate broadleaf forests and urban environments, reaching considerable heights and living for several centuries. It produces fragrant, pale yellow flowers in summer that are highly attractive to bees and other pollinators, earning it a prominent role in honey production. The species has not been assessed for the IUCN Red List. Its wood is valued for carving and musical instrument manufacture, while its flowers and leaves have traditional uses in herbal medicine. Common lime is particularly notable for producing abundant basal sprouts and epicormic shoots, a characteristic that makes it useful for coppicing and pollarding in traditional land management practices across Europe and North America.