Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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James S. Pringle (except as specified)

Annual, perennial herb
Stem decumbent to erect, < 2 m
Leaves simple, cauline (sometimes also basal), opposite or whorled, entire, sessile or basal ± petioled; stipules 0
Flower bisexual, radial, parts in 4's or 5's, except pistil 1; sepals fused, persistent; petals fused, persistent or deciduous, corolla generally without fringes or scales on inner surface, sinuses between lobes generally unappendaged; stamens epipetalous, alternate corolla lobes; ovary superior, chamber 1, placentas parietal, often intruding
Fruit: capsule, 2-valved
Seeds many
Genera in family: ± 80 genera, 900 species: worldwide; some cultivated (Eustoma , Exacum , Gentiana )
Reference: [Wood & Weaver 1982 J Arnold Arbor 63:441–487]



James C. Hickman

Annual, biennial, erect, glabrous
Leaves opposite, often ± sheathing
Inflorescence: cyme or panicle-like
Flower: calyx lobes generally 5, ± linear-keeled, appressed to corolla; corolla salverform or funnel-shaped, generally pink, lobes ± entire, scales 0, sinus appendages 0; stamens generally ± exserted, dehisced anthers spirally twisted; style thread-like, stigma oblong to fan-shaped
Fruit ± cylindric-fusiform
Seed generally < 0.5 mm, ± rounded, ± brown, netted
Species in genus: ± 50 species: worldwide, except s Africa
Etymology: (Latin: centaur, mythological discoverer of its medicinal properties)
Variable and difficult; worldwide study needed.


C. erythraea Rafn

Biennial, 20–60 cm, ± coarse
Leaves: basal rosette generally conspicuous at flower; basal leaves 20–40 mm, widely oblong, rounded; cauline acute
Inflorescence dense; units often ± flat-topped; flowers ± sessile (immediately subtended by 2 bracts)
Flower: corolla lobes 5–7 mm, rose, generally puberulent; undehisced anthers 2–3 mm; stigma oblong
Ecology: Fields, roadsides
Elevation: < 200 m.
Bioregional distribution: n&c North Coast (especially near Crescent City, Eureka, Fort Bragg)
Distribution outside California: to Washington; native to Europe

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bioregional map for CENTAURIUM%20erythraea being generated
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Centaurium erythraea
Retrieve dichotomous key for Centaurium
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
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