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
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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]



Annual, perennial herb, generally glabrous
Stem generally simple below inflorescence
Leaves cauline, opposite (sometimes also basal)
Inflorescence: compact cyme or flowers solitary
Flower parts in 4's or 5's; calyx tube obvious; corolla tube narrowly bell-shaped, lobes spreading, < tube, scales 0, sinuses between lobes ± truncate, unappendaged or generally with a variously shaped, sometimes fringed appendage, nectary pits 0 (nectaries on ovary stalk); ovary stalked, style short or indistinct, stigma 2-branched
Species in genus: ± 300 species: temp to subarctic and alpine Am, Eurasia
Etymology: (Gentius, king of ancient Illyria, who might have found medicinal value in the plants)


G. calycosa Griseb.

Stems from caudex, ± decumbent, 2–many, 5–45 cm
Leaves: basal ± 0; cauline many, ± evenly spaced, generally > 1 X internodes, 8–50 mm, 6–30 mm wide, ovate to nearly round, obtuse to acute, generally obscurely, minutely dentate, not ciliate
Inflorescences generally terminal (sometimes also at 1–3 upper nodes); flowers 1–few per inflorescence
Flower: calyx 10–20 mm, lobes narrowly to widely ovate, generally > 2 mm wide, sometimes much reduced, obtuse to acute, generally obscurely, minutely dentate, not ciliate; corolla 25–50 mm, deep blue, rarely violet, lobes 5.5–13 mm, oblong-ovate to round, short-acuminate, sinus appendages divided < 1/2 way to base into generally 2 triangular parts, each thread-like only toward tip
Seed wingless
Chromosomes: 2n=26
Ecology: Wet mtn meadows, slopes
Elevation: 1300–3900 m.
Bioregional distribution: Klamath Ranges, High Cascade Range, High Sierra Nevada
Distribution outside California: to British Columbia, Montana
Hybridizes with G. newberryi var. tiogana in s SNH (Tulare Co.).
Horticultural information: IRR, DRN, acidic: 1, 2, 4, 5, 6, 16, 17 &SHD: 14, 15; DFCLT.

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bioregional map for GENTIANA%20calycosa 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 Gentiana calycosa
Retrieve dichotomous key for Gentiana
Retrieve multiple-entry key (MEKA) for Gentiana
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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