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, except as noted
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
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botanical illustration including Polemonium eximium


Citation for this treatment: Rebecca L. Stubbs, Ruth E. Timme & Dieter H. Wilken 2017. Polemonium eximium, Revision 2, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on October 18, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on October 18, 2017.

Polemonium eximium
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© 2011 Vernon Smith
Polemonium eximium
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© 2009 Barry Breckling
Polemonium eximium
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© 2008 Aaron Schusteff
Polemonium eximium
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© 2009 Barry Breckling
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. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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.
View all CCH records

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.