Clusterspike False Indigo vs Common Yew

Amorpha crenulata compared with Taxus baccata

Key Differences

• Clusterspike False Indigo is Critically Endangered while Common Yew is Vulnerable.

Taxonomic Classification

Rank	Clusterspike False Indigo	Common Yew
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum	Magnoliophyta (Flowering Plants)	Coniferophyta (Conifers)
Class	Magnoliopsida (Dicots)	Pinopsida (Conifers)
Order	Fabales (Legumes & Allies)	Pinales (Pines & Allies)
Family	Fabaceae	Taxaceae
Genus	Amorpha	Taxus
Species	Amorpha crenulata	Taxus baccata

Evolutionary Relationship

Clusterspike False Indigo and Common Yew share a common ancestor at the Kingdom level: Plantae. (Plants)

Conservation Status

Clusterspike False Indigo

CR — Critically Endangered

Common Yew

VU — Vulnerable

Physical Characteristics

Attribute	Clusterspike False Indigo	Common Yew
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 Yew

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, tundra, and tropical and subtropical moist broadleaf forests, among 6 distinct biome types spanning the Australasia and Oceanian and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Libya), Europe (10 countries), North America (United States), Oceania and the Pacific (New Zealand), and South America (Brazil). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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 Yew

<em>Taxus baccata</em>, the common yew or English yew, is a slow-growing evergreen conifer in the family Taxaceae, native to western, central, and southern Europe, northwest Africa, and southwest Asia. It is one of the longest-lived trees in the Northern Hemisphere, with some individuals estimated to be several thousand years old. The species grows in a variety of habitats including mixed deciduous woodland, calcareous scrub, chalk downlands, and rocky slopes, often as an understorey or emergent tree. Yews are dioecious; female trees produce distinctive bright red fleshy arils surrounding a single hard seed, the only non-toxic part of the plant. All other parts, including the leaves, bark, and seeds, contain highly toxic taxine alkaloids that are dangerous to humans and most animals. Average lifespan can exceed 1,000 years under suitable conditions. <em>Taxus baccata</em> is ecologically important as dense, long-lived woodland habitat and as food for birds that disperse its seeds. Medicinally, taxol derived from yew bark is used in cancer treatment. The species is assessed as Vulnerable due to habitat degradation, overgrazing, and historic overexploitation across parts of its native range, though it remains locally common.