Linum elongatum

(Small) H. J. P. Winkler in H. G. A. Engler et al.

Nat. Pflanzenfam. ed. 2, 19a: 116. 1931.

Common names: Laredo flax
Illustrated
Basionym: Cathartolinum elongatum Small in N. L. Britton et al. N. Amer. Fl. 25: 82. 1907
Treatment appears in FNA Volume 12. Treatment on page 391. Mentioned on page 379, 390.

Herbs, perennial (sometimes flowering in 1st year), 15–30 cm, glabrous. Stems erect to ascending, branches diffuse. Leaves alternate, ascending; stipular glands present throughout or at distal nodes only; blade linear, 5–25 × 0.5–1 mm, margins entire, sometimes glandular, not ciliate, apex acute. Inflorescences panicles. Pedicels 10 mm. Flowers: sepals deciduous, mostly lanceolate, 6–11 mm, margins not scarious, all conspicuously glandular-toothed, apex attenuate; petals yellow-orange to salmon or brownish red, with prominent wine-colored band proximal to middle, broadly obovate, 14–18 mm; stamens 5–6 mm; anthers 1.5–2.5 mm; staminodia absent; styles connate nearly to apex, 7–9.5 mm; stigmas capitate. Capsules ovoid, 4 × 3 mm, apex obtuse, dehiscing into 5, 2-seeded segments, segment persistence unknown, apex blunt or subacute, minutely apiculate, false septa complete, proximal part membranaceous, not terminating in loose fringe, distal part cartilaginous, margins not ciliate. Seeds 3 × 1.2–1.3 mm. 2n = 30.


Phenology: Flowering Feb–May.
Habitat: Often on hard-packed, often red, sandy soils.
Elevation: 0–300 m.

Distribution

V12 132-distribution-map.jpg

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

Discussion

The stems of Linum elongatum are ribbed. In the flora area, it occurs in southern Texas, especially along the Rio Grande, and in south central Texas. The yellow-orange to salmon or brownish red petals with the distinctive wine-colored band proximal to the middle, brick red anthers, and wine-colored stigmas make the flowers of L. elongatum striking.

Selected References

None.

Lower Taxa

None.

"wider" is not a number.

... more about "Linum elongatum"
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
subacute +, blunt +, obtuse +, attenuate +  and acute +
Nancy R. Morin +
(Small) H. J. P. Winkler in H. G. A. Engler et al. +
wine-colored +
proximal;middle +
Cathartolinum elongatum +
0.5 cm5 mm <br />0.005 m <br /> (2.5 cm25 mm <br />0.025 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 /> (0.1 cm1 mm <br />0.001 m <br />) +
4 cm40 mm <br />0.04 m <br /> (?) +
3 cm30 mm <br />0.03 m <br /> (?) +
divided +
Laredo flax +
Tex. +, Mexico (Nuevo León) +  and Mexico (Tamaulipas) +
0–300 m. +
adnate +  and adherent +
spheric +
Often on hard-packed, often red, sandy soils. +
glandular-toothed +
not scarious +
extrastaminal +
apical-axile +, axile +  and placentation +
not +  and articulated +
10 cm100 mm <br />0.1 m <br /> (?) +
convolute +  and imbricate +
adnate +  and adherent +
yellow-orange;salmon or brownish red +
coherent +  and distinct +
obovate +
1.4 cm14 mm <br />0.014 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
Flowering Feb–May. +
multiporate +  and tricolpate +
Nat. Pflanzenfam. ed. +
mucilaginous +
3 cm30 mm <br />0.03 m <br /> (?) +
lenticular +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
deciduous +
lanceolate +
unequal +
0.6 cm6 mm <br />0.006 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
Illustrated +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
erect +  and ascending +
ridged +  and terete +
clavate +, linear +  and capitate +
at distal nodes +
0.7 cm7 mm <br />0.007 m <br /> (0.95 cm9.5 mm <br />0.0095 m <br />) +
Mesyniopsis +
Linum elongatum +
Linum sect. Linopsis +
species +
adnate +  and adherent +
18] +, [15 +  and 13 +