Linum intercursum E.P.Bicknell

Sandplain flax (en)

Species

Angiosperms > Malpighiales > Linaceae > Linum

Characteristics

Herbs or subshrubs, perennial, 20–92 cm, glabrous. Stems erect, unbranched proximal to inflorescence or few-branched at base. Leaves: proximalmost opposite, distalmost alternate, sometimes opposite nearly to inflorescence, erect to ascending; stipular glands absent; blade narrowly elliptic to oblanceolate, 8–27 × 1.2–5.6 mm, margins entire, not ciliate, apex acute; internal venation shown by transmitted light. Inflorescences panicles. Pedicels 0–5 mm. Flowers: sepals persistent, lanceolate, 2–3 mm, margins not scarious, entire, or inner and rarely outer sparsely glandular-toothed, apex sharp-pointed; petals yellow, obovate, 4–7 mm; stamens 3 mm; anthers 0.5–1 mm; staminodia absent; styles distinct, 1.5–2.5 mm; stigmas capitate. Capsules turbinate, 2–3 × 2–2.3 mm, apex acute or obtuse, dehiscing freely into 10, sharp-pointed 1-seeded segments, segments persistent on plant, false septa incomplete, proximal margins sparsely but conspicuously ciliate. Seeds 1.3–1.8 × 0.6–0.9 mm. 2n = 36.
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Glabrous perennial 2–8 dm, simple below the infl or few-branched at base; lvs mostly 25–50 below the infl, narrowly elliptic to oblanceolate, 1–2.5 cm × 1.5–5 mm, opposite below, usually alternate above; infl of slender, rather stiffly ascending-spreading branches; pedicels 1–4 mm; sep lanceolate, acute, 2–3 mm, the inner usually (and the outer seldom) sparsely glandular-toothed; pet yellow, 4–7 mm; fr turbinate, ± pointed, 2–3 mm, readily dehiscing into 10 sharp-pointed mericarps; exposed portion of the fr anthocyanic; false septa evidently incomplete, glabrous; septa sparsely but evidently ciliate; 2n=36. Open oak or pine woods and open places on the coastal plain from e. Mass. to N.C., thence inland to Tenn. and Ala.; isolated in nw. Ind. June, July. (Cathartolinum i.)
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
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Mature height (meter) 0.2 - 0.92
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Environment

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Hardiness (USDA) 4-9

Usage

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Cultivation

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Distribution

Linum intercursum world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:140843-2
WFO ID wfo-0001073468
COL ID 3V4SR
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Linum intercursum Cathartolinum intercursum Linum floridanum var. intercursum