Clusterspike False Indigo vs Common wireweed

Amorpha crenulata compared with Sida acuta

Key Differences

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

Taxonomic Classification

Rank	Clusterspike False Indigo	Common wireweed
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	Sida
Species	Amorpha crenulata	Sida acuta

Evolutionary Relationship

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

Conservation Status

Clusterspike False Indigo

CR — Critically Endangered

Common wireweed

NE — Not Evaluated

Physical Characteristics

Attribute	Clusterspike False Indigo	Common wireweed
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 wireweed

Habitat

Inhabits deserts and xeric shrublands within the Afrotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (18 countries), Asia (18 countries), Europe (Spain), North America (4 countries), Oceania and the Pacific (12 countries), and South America (Brazil, Colombia).

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 wireweed

<em>Sida acuta</em>, commonly known as common wireweed or broom jute, is a small woody-based shrub in the family Malvaceae. Its conservation status is listed as Not Evaluated by the IUCN. The species has an extremely broad distribution spanning Africa, Asia, Europe, the Americas, and Oceania, reflecting its status as both a native species in parts of tropical and subtropical regions and a widely naturalized weed in disturbed habitats globally. It typically grows in roadsides, cultivated fields, waste ground, and degraded grasslands in warm climates, often colonizing disturbed and compacted soils where few other plants thrive. <em>Sida acuta</em> is a branching perennial shrub typically reaching 50–100 cm in height, with lance-shaped toothed leaves, small pale yellow five-petaled flowers, and distinctive star-shaped stellate hairs on stems and leaves. The plant produces schizocarp fruits that split into individual hard segments each bearing a seed, facilitating dispersal by animals, water, and machinery. Several parts of the plant are used in traditional medicine across its range for treating a variety of conditions. Biological traits including average lifespan, precise height, and mass remain poorly documented in standardized databases. Ecologically, common wireweed is considered an invasive species in many regions, but also provides small-scale cover and foraging habitat for invertebrates in disturbed environments throughout its vast pantropical and warm-temperate global distribution.