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Centaurium erythraea
EUROPEAN CENTAURY

Higher Taxonomy
Family: GentianaceaeView DescriptionDichotomous Key

Common Name: GENTIAN FAMILY
Habit: Annual to perennial herb [to trees]. Stem: decumbent to erect, < 2 m, simple or branched. Leaf: simple, cauline, sometimes also basal, opposite or whorled, entire, sessile or basal +- petioled; stipules 0. Flower: bisexual, radial, parts in 4s or 5s except pistil 1; sepals fused, persistent; petals fused, +- persistent, sinus between lobes often unappendaged; stamens epipetalous, alternate corolla lobes; ovary superior, chamber 1, placentas parietal, often intruding, stigmas 1--2. Fruit: capsule, 2-valved. Seed: many.
Genera In Family: +- 90 genera, 1800 species: worldwide; some cultivated (Eustoma, Exacum, Gentiana). Note: Gentianella tenella moved to Comastoma. Key to genera revised by Bruce G. Baldwin.
eFlora Treatment Author: James S. Pringle, except as noted
Scientific Editor: Thomas J. Rosatti.
Genus: CentauriumView DescriptionDichotomous Key

Common Name: CENTAURY
Habit: Annual, biennial, glabrous. Stem: erect, branched or simple below inflorescence. Leaf: cauline, opposite, also basal or not. Inflorescence: cyme. Flower: parts generally in 5s; calyx lobes >> tube (discounting thin membrane between lobes in Centaurium tenuiflorum), +- appressed to corolla tube; corolla salverform, generally pink, lobes < tube, elliptic-oblong, entire or minutely toothed at tip, scales 0, nectary pits 0 (nectaries elsewhere 0); stamens initially curved to 1 side, dehisced anthers spirally twisted; ovary sessile, style thread-like (much wider than filaments), cleft 0.5--1 mm, deciduous, stigmas 2, elliptic to ovate.
Species In Genus: +- 15 species: temperate, dry-mesic tropics, +- Eurasia, northern Africa, Mexico. Etymology: (Latin: centaur, mythological discoverer of plants medicinal properties) Note: Native species moved to Zeltnera.

Centaurium erythraea Rafn
NATURALIZED
Habit: Plant (3)20--60 cm. Leaf: basal generally rosetted, 15--70 mm, obovate to widely elliptic, rounded; cauline 8--50 mm, elliptic to lanceolate, acute. Inflorescence: dense, +- flat-topped; flowers sessile, immediately subtended by 2 bracts. Flower: corolla lobes 4.5--8 mm. Chromosomes: 2n=42.
Ecology: Fields, roadsides; Elevation: < 200 m. Bioregional Distribution: NCo (esp near Crescent City, Eureka, Fort Bragg); Distribution Outside California: to British Columbia, eastern North America; native to Eurasia. Flowering Time: Jul--Sep
eFlora Treatment Author: James S. Pringle
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Citation for this treatment: James S. Pringle 2016. Centaurium erythraea, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=18573, accessed on February 09, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 09, 2016.


Centaurium erythraea
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© 2003 George W. Hartwell

More photos of Centaurium erythraea in CalPhotos


Geographic subdivisions for Centaurium erythraea:
NCo (esp near Crescent City, Eureka, Fort Bragg);
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.