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]


Annual, glabrous
Leaves basal and cauline, opposite
Inflorescence: cyme or flowers solitary in axils or on branches
Flower: parts in 4's or 5's; calyx tube < lobes; corolla < 2 cm, narrowly funnel-shaped, lobes spreading, < tube, subentire, with fringes or scales on inner surface near base, sinus appendages 0, nectary pits 0 (nectaries on lower part of corolla tube); ovary sessile, style indistinct or 0, stigma 2-branched, persistent
Species in genus: ± 250 species: ± worldwide, especially temp to alpine, except Africa
Etymology: (Latin: little Gentiana )
Reference: [Gillett 1957 Ann Missouri Bot Gard 44:195–269]


G. amarella (L.) Boerner subsp. acuta (Michx.) J.M. Gillett

Plant 5–80 cm
Stem erect, 1, often with long branches near base, simple or with shorter branches above
Leaves: basal withering early; lower cauline < 45 mm, spoon-shaped to elliptic-oblong, crowded, upper cauline < 60 mm, oblong-lanceolate to ovate, generally << internodes
Inflorescence: pedicels generally < 2.5(–5) cm
Flower: calyx 5–10(18) mm, lobes 1–6 X tube, linear to lanceolate; corolla blue to rose-violet or white, lobes ovate-triangular, a fringe of hairs across each
Chromosomes: 2n=18
Ecology: Wet meadows, bogs
Elevation: 1500–3500 m.
Bioregional distribution: Klamath Ranges, High Cascade Range, High Sierra Nevada, San Bernardino Mountains, White and Inyo Mountains
Distribution outside California: to Alaska, e N.America, Baja California, e Asia
Flowering time: Jun–Sep
Synonyms: Gentiana a. L. var. acuta (Michx.) Herder
Horticultural information: TRY.

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bioregional map for GENTIANELLA%20amarella%20subsp.%20acuta 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 Gentianella amarella subsp. acuta
Retrieve dichotomous key for Gentianella
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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