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Hillia (plant)

Genus of plants From Wikipedia, the free encyclopedia

Hillia is a genus of flowering plants in the family Rubiaceae. It has 24 species,[1] all of which are native to the Neotropics.[2]

Quick facts Scientific classification, Type species ...
Hillia
Hillia parasitica
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Rubiaceae
Subfamily: Cinchonoideae
Genus: Hillia
Jacquin
Type species
Hillia parasitica
Jacquin
Species

24 species, see text.

Synonyms

Ravnia Oersted

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Taxonomy

Hillia was named by Nicolaus Jacquin in 1760.[3][4] It was named for the English botanist John Hill (1716–1775).[5] Jacquin named only one species, Hillia parasitica. It has been suggested that the specific epithet as well as the generic name might well be a reference to John Hill.[6]

Some authors have placed five of the species in a separate genus, Ravnia. A cladistic analysis of morphological characters found Ravnia to be embedded within Hillia.[6] This hypothesis has not been tested with molecular data.

The genera Hillia, Balmea, and Cosmibuena form a monophyletic group. Some authors have designated this group as the tribe Hillieae, but it might be embedded within another tribe, Hamelieae.[7]

Species

The following species list may be incomplete or contain synonyms.

Description

Most of the species are slightly succulent epiphytes or small trees. A few are subshrubs or lianas. Hillia rivalis is a rheophyte. The tissues of all the species contain raphides. The capsules have a beak-like appendage.[6]

Uses

Hillia triflora is cultivated as an ornamental plant.[8]

References

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