Agile Gibbon vs Closed Gentian

Hylobates agilis compared with Gentiana rubricaulis

Key Differences

• Agile Gibbon is Endangered while Closed Gentian is Least Concern.

Taxonomic Classification

Rank	Agile Gibbon	Closed Gentian
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Mammalia (Mammals)	Magnoliopsida (Dicots)
Order	Primates (Primates)	Gentianales (Gentianales)
Family	Hylobatidae	Gentianaceae
Genus	Hylobates	Gentiana
Species	Hylobates agilis	Gentiana rubricaulis

Conservation Status

Agile Gibbon

EN — Endangered

Closed Gentian

LC — Least Concern

Physical Characteristics

Attribute	Agile Gibbon	Closed Gentian
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Agile Gibbon

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Closed Gentian

Habitat

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

Range

Distributed across Canada and United States.

Agile Gibbon

The Agile Gibbon (Hylobates agilis) is a species in the genus Hylobates. It is currently classified as Endangered on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Closed Gentian

The closed gentian or bottle gentian (Gentiana andrewsii) is a striking herbaceous perennial in the family Gentianaceae native to eastern and central North America, found from Quebec and New England west to Nebraska and south to Georgia. Unlike most gentians, the deep violet-blue flowers of this species remain permanently closed — the petals fused into a bottle-like shape through which only strong bumblebees, primarily Bombus species, can force entry to access nectar and pollen, making it a specialist of bumblebee pollination. Plants grow 30–60 cm tall in moist prairies, wet meadows, fens, stream banks, and open woodland edges, flowering in late summer and autumn when few other wildflowers are in bloom. The closed flower form prevents small insects from accessing floral rewards while selecting for robust, strong-flying pollinators capable of forcing the petals apart. Closed gentian is declining across its range due to loss of moist prairie and fen habitats, wetland drainage, invasive species competition, and the regional decline of specialist bumblebee pollinators, with which its reproductive success is closely linked.