CR

Scolosanthus pycnophyllus

Unknown

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Scolosanthus pycnophyllus faces severe threats from habitat destruction due to urban development and agricultural expansion across its limited range in Puerto Rico. The species' extremely restricted distribution makes it particularly vulnerable to localized disturbances, while invasive plant species compete for resources in its native forest understory. Climate change poses additional risks through altered precipitation patterns that could affect the moist forest conditions this endemic shrub requires.

Threat summary

Habitat

This endemic Puerto Rican shrub inhabits moist limestone forests and forest edges, typically growing in the understory of subtropical wet forests. It occurs in areas with well-drained soils and partial shade conditions characteristic of the island's interior mountainous regions.

Other threatened species in Rubiaceae

CR

Psychotria tahitensis

Unknown
CR

Machaonia urbinoi

Unknown
CR

Rondeletia bicolor

Unknown
CR

Scolosanthus acunae

Unknown

Frequently asked questions

Why is Scolosanthus pycnophyllus classified as Critically Endangered?
Scolosanthus pycnophyllus is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Scolosanthus pycnophyllus faces severe threats from habitat destruction due to urban development and agricultural expansion across its limited range in Puerto Rico. The species' extremely restricted distribution makes it particularly vulnerable to localized disturbances, while invasive plant species compete for resources in its native forest understory. Climate change poses additional risks through altered precipitation patterns that could affect the moist forest conditions this endemic shrub requires.
Where does Scolosanthus pycnophyllus live?
Scolosanthus pycnophyllus occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Scolosanthus pycnophyllus?
The main threats to Scolosanthus pycnophyllus are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

Get weekly conservation intelligence

One short digest a week of the most striking species and country data we ship, plus breaking conservation news paired with our database where it matters.

Free, no spam. One-click unsubscribe in every email.