Linum rupestre |
Linum grandiflorum |
|
---|---|---|
rock flax |
flowering flax, flowering or red or scarlet or crimson flax, red flax, scarlet flax |
|
Habit | Herbs, perennial, 20–75 cm, glabrous or rarely sparsely hairy proximally. | Herbs, annual, 10–60 cm, glabrous, glaucous. |
Stems | erect, branched at base and in inflorescence. |
ascending or sometimes decumbent at base, usually freely branched. |
Leaves | opposite near base or alternate throughout, appressed-ascending; stipular glands present; blade linear to linear-lanceolate, 8–20 × 0.5–2.1 mm, margins entire or with scattered minute marginal glands, not ciliate, apex acute; 1-nerved. |
blade linear to lanceolate or narrowly elliptic, 10–30 × 2–3(–7) mm. |
Inflorescences | panicles, with ascending to spreading branches. |
cymes, few-flowered. |
Pedicels | 0–3 mm. |
10–25 mm. |
Flowers | sepals persistent, lanceolate to ovate, 2.5–5 mm, margins of inner sepals narrowly scarious, conspicuously glandular-toothed, apex acute or acuminate; petals lemon yellow, oblanceolate or narrowly obcordate, 7–11 mm; stamens 2–8 mm; anthers 0.5–1 mm; staminodia present; styles distinct, 3–6.5 mm; stigmas capitate. |
heterostylous; sepals lanceolate, 7–11 mm, margins glabrous, apex acuminate; petals bright red to maroon, fading to purple, broadly obovate, 15–30 mm; stamens 8–10 mm; anthers 5 mm; staminodia not seen; styles connate proximal 1/2, 4.5 mm (short-styled) or 8–10 mm (long-styled); stigmas clavate. |
Capsules | ovoid, 2–3 × 2–2.5 mm, apex sharp-pointed, dehiscing readily into 10, 1-seeded segments, segments falling freely, false septa incomplete, false and true septa margins ciliate. |
ovoid-globose, 6–7 mm diam., apex apiculate, segments persistent on plant, margins not seen. |
Seeds | 1.2–1.9 × 0.7–1.1 mm. |
2–3 × 0.5–1 mm. |
2n | = 36. |
= 16. |
Linum rupestre |
Linum grandiflorum |
|
Phenology | Flowering Apr–Aug. | Flowering Apr–Sep. |
Habitat | Sandy soils, rocky slopes and ledges, often on limestone. | Disturbed areas. |
Elevation | 150–1500 m. (500–4900 ft.) | 0–2700 m. (0–8900 ft.) |
Distribution |
NM; TX; Mexico (Chihuahua, Coahuila, Durango, Nuevo León); Central America (Guatemala)
|
CA; CO; FL; KY; NE; NY; OH; PA; TX; UT; n Africa [Introduced in North America]
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Discussion | Linum rupestre has narrowly funnelform corollas and yellow stamens and styles. The anthers and stigmas are held closely adjacent at the mouth of the corolla tube, below the broad, spreading limbs. The species occurs from southeastern New Mexico and central Texas to Guatemala. It often grows with L. schiedeanum in Texas and Mexico. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Linum grandiflorum occasionally escapes from gardens and persists along roadsides and trails. This showy garden plant has blue anthers. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 12, p. 381. | FNA vol. 12, p. 377. |
Parent taxa | Linaceae > Linum > sect. Linopsis | Linaceae > Linum > sect. Linum |
Sibling taxa | ||
Name authority | Engelmann ex A. Gray: Boston J. Nat. Hist. 6: 232. (1850) | Desfontaines: Fl. Atlant. 1: 277, plate 78. (1798) |
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