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Gentiana calycosa

Higher Taxonomy
Family: GentianaceaeView DescriptionDichotomous Key

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: GentianaView DescriptionDichotomous Key

Common Name: GENTIAN
Habit: Annual to perennial herb, generally glabrous. Stem: generally simple below inflorescence. Leaf: cauline, opposite (also basal or not). Inflorescence: compact cyme or flowers 1. Flower: parts generally in 5s (generally in 4s in Gentiana prostrata, 4s or 5s in Gentiana fremontii); calyx tube generally > lobes; corolla tube narrow-bell-shaped, lobes spreading, < tube, base of sinus between lobes truncate or generally with a variously shaped, sometimes fringed appendage, nectary pits 0 (nectaries on ovary stalk); ovary stalked, style +- 0 or short, entire, persistent, stigmas 2.
Species In Genus: +- 400 species: temperate to subarctic, alpine America, Eurasia. Etymology: (Gentius, king of Illyria, who used roots to treat malaria)

Gentiana calycosa Griseb.
Habit: Perennial herb. Stem: from caudex, +- decumbent, 2--many, 5--45 cm. Leaf: basal 0; cauline many, +- even-spaced, generally > internodes, 8--50 mm, 6--30 mm wide, ovate to +- round, obtuse to acute, obscurely, minutely dentate, not ciliate. Inflorescence: generally terminal; flowers 1--few, also 1--2 at 1--3 upper nodes or not. Flower: calyx 10--20 mm, lobes narrow- to wide-ovate, generally > 2 mm wide, much reduced or not, obtuse to acute, generally obscurely, minutely dentate, not ciliate; corolla 25--50 mm, deep blue (violet), lobes 5.5--13 mm, oblong-ovate to round, acute, sinus appendages divided < 1/2 way to base into generally 2--3 triangular segments, thread-like only toward tip. Seed: wingless. Chromosomes: 2n=26.
Ecology: Wet mountain meadows, slopes; Elevation: 1300--3900 m. Bioregional Distribution: KR, CaRH, SNH; Distribution Outside California: to British Columbia, Montana. Flowering Time: Jul--Sep Note: Has hybridized with Gentiana newberryi var. tiogana in southern SNH (Tulare Co.).
eFlora Treatment Author: James S. Pringle
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Previous taxon: Gentiana affinis var. ovata
Next taxon: Gentiana fremontii

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botanical illustration including Gentiana calycosa


Citation for this treatment: James S. Pringle 2016. Gentiana calycosa, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 02, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on May 02, 2016.

Gentiana calycosa
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© 2009 Barry Breckling
Gentiana calycosa
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© 2014 Neal Kramer
Gentiana calycosa
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© 2012 Gary A. Monroe
Gentiana calycosa
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© 2003 Christopher L. Christie
Gentiana calycosa
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© 2014 Neal Kramer
Gentiana calycosa
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© 2012 Gary A. Monroe

More photos of Gentiana calycosa in CalPhotos

Geographic subdivisions for Gentiana calycosa:
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.
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.