Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
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Niall F. McCarten

Annual, perennial herb, shrub
Stem generally erect, branched, glabrous, hairy, or glandular
Leaves generally cauline, alternate, opposite, or whorled, simple, sessile, generally linear to ovate; stipules glandular or 0
Inflorescence: raceme or cyme, axillary, open to dense
Flower generally bisexual, radial, nodding in bud; sepals 4–5, free, glabrous, hairy, or margins gland-toothed; petals 4–5, free, blue, white, yellow, or pink, ephemeral; stamens 4–5, alternate petals, generally appendaged; staminodes alternate stamens or 0; ovary superior, chambers 2–5 but becoming 4–10 by growth of false septa, styles 2–5
Fruit: generally capsule
Genera in family: 13 genera, 300 species: worldwide, especially temp; some cultivated (Linum usitatissimum , flax, linseed; L. bienne, L. grandiflorum , ornamental)
Reference: [Robertson 1971 J Arnold Arbor 52: 649–665]


Species in genus: 1 sp
Etymology: (Greek & Latin: hard flax, from fruit walls)
Reference: [Rogers 1966 Madroño 18:181–184]
Segregated from Linum.


S. digynum (A. Gray) C. Rogers

Annual, glabrous
Stem erect, 5–20 cm
Leaves opposite, ± erect, 5–16 mm, oblong; lower leaves entire; upper leaves serrate; stipules 0
Inflorescence: cyme, dense; bracts leaf-like; pedicels < 3 mm
Flower: sepals 5, 2–3 mm, unequal, margins gland-toothed; petals 5, 3–4 mm, unappendaged, yellow; stamens 5, unappendaged; ovary chambers 4, styles 2, free, 1 mm, stigmas > styles in width
Fruit: nutlets 4; surfaces rough
Seed ± 1 mm
Chromosomes: n=8
Ecology: Generally moist meadows
Elevation: 1000–1800 m.
Bioregional distribution: Klamath Ranges, Cascade Range, Sierra Nevada
Distribution outside California: to Washington, Idaho

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bioregional map for SCLEROLINON%20digynum 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 Sclerolinon digynum
Retrieve dichotomous key for Sclerolinon
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