Jepson eFlora: Taxon page
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Zeltnera trichantha
ALKALI 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: ZeltneraView DescriptionDichotomous Key

Common Name: CENTAURY
Habit: Annual, glabrous. Stem: erect, generally branched. Leaf: cauline, opposite (sometimes also basal). Inflorescence: cyme. Flower: parts in 4s or generally 5s; calyx lobes >> tube (discounting thin membrane between lobes in Zeltnera davyi), appressed to corolla tube, generally not keeled; corolla salverform, white or generally pink, lobes <= tube, +- entire, scales 0, nectaries pits 0 (nectaries elsewhere 0); stamens often initially curved to 1 side, dehisced anthers spirally twisted; ovary sessile, style generally thread-like, deciduous, entire or cleft < 1 mm, stigmas 1, 2-lobed, or 2, stigmas or lobes wedge- to fan-shaped.
Species In Genus: +- 25 species: temperate, dry-mesic tropics, North America, South America. Etymology: (L. Zeltner, N. Zeltner, Swiss botanists, b. 1938, 1934) Note: Variable, difficult; further study needed, especially of chromosome numbers, hybridization. Zeltnera calycosa (Buckley) G. Mans. [Centaurium calycosum (Buckley) Fernald] not in California.

Zeltnera trichantha (Griseb.) G. Mans.
NATIVE
Habit: Plant 5--45 cm. Leaf: cauline, 10--40 mm, ovate to lanceolate. Inflorescence: +- dense, units +- flat-topped; pedicels 0--3(6) mm. Flower: corolla 12--22 mm, lobes (3)5--10 mm, linear to lance-oblong, tip acute to acuminate; stigma 1, +- 2-lobed. Chromosomes: 2n=34.
Ecology: Alkaline and saline flats, dry to moist openings in chaparral, around hot springs, vernal pools; Elevation: < 800 m. Bioregional Distribution: NCoRI, SnFrB. Flowering Time: May--Aug Note: Apparently hybridizes with Zeltnera venusta, especially in Sonoma Co.
Synonyms: Centaurium trichanthum (Griseb.) B.L. Rob.
eFlora Treatment Author: James S. Pringle
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Previous taxon: Zeltnera namophila
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botanical illustration including Zeltnera trichantha

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Citation for this treatment: James S. Pringle 2016. Zeltnera trichantha, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=81830, accessed on February 08, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 08, 2016.


Geographic subdivisions for Zeltnera trichantha:
NCoRI, SnFrB.
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.