Cinchona hirsuta

Cinchona hirsuta
Preserved specimen of Cinchona hirsuta, consisting of a woody branch with rounded brown leaves, and brown inflorescences
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Embryophytes
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Rubiaceae
Genus: Cinchona
Species:
C. hirsuta
Binomial name
Cinchona hirsuta
Synonyms[2]
  • Cinchona pubescens var. hirsuta (Ruiz & Pav.) DC.
  • Cinchona tenuis Ruiz ex DC.
  • Cinchona tenuis Vell.

Cinchona hirsuta is a species of flowering plant in the family Rubiaceae. It is a tree with papery leaves, reddish flowers, and capsule fruits. The species is native to Bolivia and Peru.

Cinchona hirsuta was described in 1799, and has been assessed as endangered by the IUCN.

Taxonomy

The species was described by Hipólito Ruiz López and José Antonio Pavón Jiménez in 1799.[3]

Distribution

Cinchona hirsuta is native to the wet tropical biome of Bolivia and Peru.[2] The species grows in forests, at elevations of 1,700–3,100 metres (5,600–10,200 ft).[1]

Description

Cinchona hirsuta is a tree that grows up to 12 metres (39 ft) tall.[4]

The leaf stems are 0.3–1.5 centimetres (0.12–0.59 in) long. The leaves are elliptical to obovate, firm and papery, 5.4–11 centimetres (2.1–4.3 in) long, and 1.9–6.8 centimetres (0.75–2.68 in) wide. The leaves may have small domatia.[4]

The calyx is 3.6–6 millimetres (0.14–0.24 in) long, and has 2.5–4 millimetres (0.098–0.157 in) long lobes. The corolla is reddish, 12–18 millimetres (0.47–0.71 in) long, and tube-shaped. The corolla has 4.4–9.6 millimetres (0.17–0.38 in) long lobes.[4]

The fruit is a more or less ellipsoid capsule, which is 12–31 millimetres (0.47–1.22 in) long, and 9–12 millimetres (0.35–0.47 in) wide. The capsule has a woody endocarp. The seeds are 6.5–12 millimetres (0.26–0.47 in) long, and 2.8–4.3 millimetres (0.11–0.17 in) wide.[4]

Conservation

In 2022, the IUCN assessed Cinchona hirsuta as endangered.[1]

Nomenclature

In Spanish, the species is known as Charichuelo, Cascarilla Negrilla, Cascarilla Hojas de Roble, Cascarilla Delgadilla, Cascarilla Delgada, Cascarilla Colorada, or Cascarilla.[5]

References

  1. 1 2 3 Alban-Castillo, J.; Cruz-Rios, I.; Vasquez-Bautista, W. (2024). "Cascarilla Delgada". IUCN Red List of Threatened Species (in Spanish). 2024 e.T206605253A207805045. doi:10.2305/IUCN.UK.2024-1.RLTS.T206605253A207805045.es. Retrieved 2026-07-31.
  2. 1 2 "Cinchona hirsuta". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2026-07-31.
  3. ↑ "Cinchona hirsuta Ruiz & Pav". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens.
  4. 1 2 3 4 "Cinchona hirsuta Ruiz & Pav". WorldFloraOnline.org. World Flora Online. Retrieved 31 July 2026.
  5. ↑ "Cinchona hirsuta Ruiz & Pav". CatalogueOfLife.org. Catalogue of Life. Retrieved 31 July 2026.