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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Robert W. Patterson, Family Editor

Annual, perennial herb, shrub, vine
Leaves simple or compound, cauline (or most in basal rosette), alternate or opposite; stipules 0
Inflorescence: cymes, heads, or flowers solitary
Flower: calyx generally 5-ribbed, ribs often connected by translucent membranes that are generally torn by growing fruit; corolla generally 5-lobed, radial or bilateral, salverform to bell-shaped, throat often well defined; stamens generally 5, epipetalous, attached at same or different levels, filaments of same or different lengths, pollen white, yellow, blue, or red; ovary superior, chambers generally 3, style 1, stigmas generally 3
Fruit: capsule
Seeds 1–many, gelatinous or not when wet
Genera in family: 19 genera, 320 species: Am, n Eur, n Asia; some cultivated (Cantua, Cobaea (cup-and-saucer vine), Collomia, Gilia, Ipomopsis, Linanthus, Phlox )
Recent taxonomic note: *See also revised taxonomy of Porter and Johnson 2000 Aliso 19(1):55–91; Porter 1998 Aliso 17:83–85


Dieter H. Wilken

Annual, perennial herb
Stems decumbent to erect, 1–10, 1–10 dm, glandular, hairy
Leaves pinnately compound, alternate; basal petioled; cauline sessile upward; leaflets entire to divided, glabrous to glandular
Inflorescence open to head-like
Flower: calyx bell-shaped, membranous in age but not separated into membrane and ribs, glandular; corolla rotate to funnel-shaped, white to blue or purple; stamens attached at same level, filaments hairy at base
Fruit ovoid to spheric
Seeds 3–10 per chamber, generally 1–3 mm, elliptic to ovate in outline, slightly gelatinous when wet, brown to black
Species in genus: ± 20 species: Am, Eurasia
Etymology: (Greek: perhaps from Polemon, Athenian philosopher, or polemos, strife or war)
Reference: [Grant 1989 Bot Gaz 150:158–169]
Pers generally cross-pollinated, anns self-pollinated.


P. eximium Greene


Perennial, hairy
Stem erect, < 4 dm
Leaves generally basal, narrowly oblong in outline; petioles sheathing, green, not membranous; leaflets > 11, < 6 mm, deeply 3–5-lobed; lobes generally oblanceolate, glandular, appearing as whorled leaflets
Inflorescence head-like; pedicels < 6 mm
Flower: calyx 5–10 mm, lobes ± = tube, oblong, rounded; corolla 11–15 mm, funnel-shaped, tube > lobes, white, throat and lobes blue; stamens and style included
Ecology: Rocky outcrops, talus
Elevation: 3000–4200 m.
Bioregional distribution: c&s High Sierra Nevada
Horticultural information: DFCLT.

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bioregional map for POLEMONIUM%20eximium 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 Polemonium eximium
Retrieve dichotomous key for Polemonium
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