Jepson Flora Project: Jepson Interchange    

 
link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora.

GENTIANACEAE

GENTIAN FAMILY

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]

CENTAURIUM

CENTAURY

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.

Native

C. exaltatum (Griseb.) Piper

Annual 10–35 cm
Leaf 10–30 mm, ± oblong, acute
Inflorescence open; pedicels 10–50 mm
Flower: corolla lobes 3–7 mm, generally inrolled and appearing ± linear, not overlapping, white to rose; undehisced anthers ± 1 mm; stigma lobes fan-shaped
Ecology: Moist, generally alkaline scrub
Elevation: generally < 1500 m.
Bioregional distribution: South Coast Ranges, San Gabriel Mountains, Peninsular Ranges, Great Basin Floristic Province, Mojave Desert, w edge Sonoran Desert
Distribution outside California: to e Washington, Utah
Flowering time: May–Aug
Synonyms: C. namophilum Reveal, C.R. Broome & Beatley var. nevadense C.R. Broome, Nevada centaury
CA (not NV) plants that have been considered C. n. var. namophilum , spring-loving centaury, THREATENED US, with denser inflorescence, from e DMoj (Ash Meadows), are apparently all C. exaltatum
Reference: [Holmgren 1984 Intermtn Flora 4:5–6]
Much variation apparently environmental.

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bioregional map for CENTAURIUM%20exaltatum being generated
 
N.B. The distribution depicted here differs from that given in The Jepson Manual (1993)
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 exaltatum
Retrieve dichotomous key for Centaurium
Overlay Consortium of California Herbaria specimen data by county on this map
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