Linum lundellii

C. M. Rogers

Sida 8: 184, fig. 4c. 1979.

Common names: Sullivan City flax
Treatment appears in FNA Volume 12. Treatment on page 390. Mentioned on page 379, 380.

Herbs, annual, 10–40 cm, glabrate. Stems spreading to erect, few-branched. Leaves alternate, spreading; stipular glands moderately developed at proximal nodes, absent on distal nodes; blade linear, 5–30 × 0.5–1.5 mm, margins entire, not ciliate, apex acute. Inflorescences panicles. Pedicels 5–13 mm. Flowers: sepals deciduous, linear-lanceolate to lanceolate, 4–12 mm, margins narrowly scarious, glandular-toothed, apex acute to acuminate; petals yellow to orange salmon, faintly maroon banded near base, obcordate, 7–12 mm; stamens 4–5 mm; anthers 1–1.5 mm; staminodia absent; styles connate nearly to apex, 3–4 mm; stigmas dark, capitate. Capsules ovoid, 3.3–4 × 2.6–3.1 mm, apex obtuse, dehiscing into 5, 2-seeded segments, segments persistent on plant, false septa complete, proximal part membranaceous, not terminating in loose fringe, distal part cartilaginous, margins not ciliate. Seeds 2.5–2.7 × 1.1 mm. 2n = 30.


Phenology: Flowering Feb–Apr.
Habitat: Sandy loam in arroyos, gravelly hillsides, mesquite scrub woodlands.
Elevation: 0–100 m.

Distribution

V12 292-distribution-map.jpg

Tex., Mexico (Nuevo León), Mexico (Tamaulipas)

Discussion

Linum lundellii occurs in southern Texas and adjacent Tamaulipas (the collection from Nuevo León, Mueller 470, TEX, made at 2400 m, may be misidentified); it can be distinguished from other species by its relatively very short styles. C. M. Rogers (1968) identified a variable population of yellow-flowered plants that he included in L. berlandieri var. filifloium (then treated as L. rigidum var. filifolium). As a result of subsequent study of these plants, he concluded that L. lundellii and L. elongatum should be recognized as separate species. Rogers (1979) compared garden-grown plants of these three taxa and observed that the anthers of L. lundellii are at the same level as the stigmas at anthesis and that pollen had already been deposited on stigmas when the flowers opened, whereas styles of L. berlandieri var. filifolium and L. elongatum are much longer than the stamens and pollen is not shed before anthesis.

Selected References

None.

Lower Taxa

None.

"wider" is not a number.

... more about "Linum lundellii"
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
obtuse +, acute +  and acuminate +
Nancy R. Morin +
C. M. Rogers +
Linopsis +
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
glandular-toothed +  and entire +
awl--shaped;spatulate;awl--shaped;spatulate;obovate;oblong;elliptic;oblanceolate;lanceolate;linear-oblanceolate;linear-lanceolate;linear +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0.33 cm3.3 mm <br />0.0033 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.26 cm2.6 mm <br />0.0026 m <br /> (0.31 cm3.1 mm <br />0.0031 m <br />) +
divided +
Sullivan City flax +
Tex. +, Mexico (Nuevo León) +  and Mexico (Tamaulipas) +
0–100 m. +
adnate +  and adherent +
spheric +
Sandy loam in arroyos, gravelly hillsides, mesquite scrub woodlands. +
glandular-toothed +
extrastaminal +
apical-axile +, axile +  and placentation +
not +  and articulated +
0.5 cm5 mm <br />0.005 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
convolute +  and imbricate +
adnate +  and adherent +
maroon banded;yellow;orange salmon +
coherent +  and distinct +
obcordate +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Flowering Feb–Apr. +
multiporate +  and tricolpate +
mucilaginous +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.27 cm2.7 mm <br />0.0027 m <br />) +
lenticular +
1.1 cm11 mm <br />0.011 m <br /> (?) +
deciduous +
linear-lanceolate +  and lanceolate +
unequal +
0.4 cm4 mm <br />0.004 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
few-branched +
spreading +  and erect +
ridged +  and terete +
clavate +, linear +  and capitate +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Mesyniopsis +
Linum lundellii +
Linum sect. Linopsis +
species +
adnate +  and adherent +
18] +, [15 +  and 13 +