Jepson eFlora: Taxon page
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Polemonium eximium

Higher Taxonomy
Family: PolemoniaceaeView DescriptionDichotomous Key

Habit: Annual, perennial herb, shrub, vine. Leaf: simple or compound, cauline (or most basal), alternate or opposite; stipules 0. Inflorescence: cymes, heads, clusters, or flower 1; bracts in involucres or not. Flower: sepals generally 5, fused at base, translucent membrane generally connecting lobes, torn by fruit; corolla generally 5-lobed, radial or bilateral, salverform to bell-shaped, throat often well defined; stamens generally 5, epipetalous, attached at >= 1 level, filaments of >= 1 length, pollen white, yellow, blue, or red; ovary superior, chambers generally 3, style 1, stigmas generally 3. Fruit: capsule. Seed: 1--many, when wetted swelling or not, gelatinous or not.
Genera In Family: 26 genera, 314 species: America, northern Europe, northern Asia; some cultivated (Cantua, Cobaea (cup-and-saucer vine), Collomia, Gilia, Ipomopsis, Linanthus, Phlox). Note: Leptodactylon moved to Linanthus.
eFlora Treatment Author: Robert Patterson, family description, key to genera
Scientific Editor: Robert Patterson, Thomas J. Rosatti.
Genus: PolemoniumView DescriptionDichotomous Key

Habit: Annual, perennial herb. Stem: decumbent to erect, 10--100 cm, glandular-hairy, hairy, or glabrous. Leaf: pinnate-compound, alternate; basal petiole base membranous or not, sheathing or not; cauline sessile above; leaflets entire to divided, glabrous to glandular-hairy. Inflorescence: cyme or head. Flower: calyx bell-shaped, membranous in age but not separated into membrane and lobes, glandular-hairy; corolla rotate to funnel- or bell-shaped, tube << throat, lobes white to blue or purple; stamens attached at 1 level, filaments hairy at base; ovary generally +- 1 mm, +- 1 mm wide. Fruit: ovoid to spheric. Seed: <= 10, generally 1--3 mm, elliptic to ovate, +- gelatinous when wet, brown to black.
Species In Genus: +- 30 species: America, Eurasia. Etymology: (Greek: perhaps from Polemon, Athenian philosopher, or polemos, strife or war) Note: Perennial herb generally cross-pollinated, annual self-pollinated. Polemonium eddyense newly described; Polemonium pulcherrimum var. shastense newly recognized.
eFlora Treatment Author: Rebecca L. Stubbs, Ruth E. Timme & Dieter H. Wilken

Polemonium eximium Greene
Habit: Perennial herb, cespitose, hairy; rhizomed. Stem: erect, 10--40 cm, glandular-hairy to hairy. Leaf: basal 4--13 cm, 4--9 mm wide, glandular-hairy, cauline reduced; petioles 2--6 cm, bases generally not membranous, sheathing; leaflets 20--35, 3--6 mm, deeply 3--5-lobed. Inflorescence: head, many-flowered; pedicel 1--3 mm. Flower: calyx 6--8 mm, lobes < tube; corolla funnel-shaped, limb 9--15 mm diam, throat 6--11 mm, lobes +- 5 mm, blue to purple; stamens +- 5 mm, included; pistil 4--7 mm, style included. Fruit: +- 5 mm, 3 mm wide. Seed: <= 6, brown. Chromosomes: 2n=18.
Ecology: Rocky outcrops, talus; Elevation: 3000--4200 m. Bioregional Distribution: c&s SNH. Flowering Time: Jun--Aug
eFlora Treatment Author: Rebecca L. Stubbs, Ruth E. Timme & Dieter H. Wilken
Jepson Online Interchange

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botanical illustration including Polemonium eximium


Citation for this treatment: Rebecca L. Stubbs, Ruth E. Timme & Dieter H. Wilken 2016. Polemonium eximium, Revision 2, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 01, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on May 01, 2016.

Polemonium eximium
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© 2008 Aaron Schusteff
Polemonium eximium
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© 2009 Barry Breckling
Polemonium eximium
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© 2012 Steve Matson
Polemonium eximium
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© 2007 Aaron Schusteff
Polemonium eximium
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© 1991 John Game
Polemonium eximium
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© 2012 Steve Matson

More photos of Polemonium eximium in CalPhotos

Geographic subdivisions for Polemonium eximium:
c&s SNH.
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).

View elevation by latitude chart
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.