Linum neomexicanum

Greene

Bot. Gaz. 6: 183. 1881.

Common names: New Mexico yellow flax
Treatment appears in FNA Volume 12. Treatment on page 381. Mentioned on page 378, 382, 395.

Herbs, annual, 15–60 cm, glabrous, sometimes glaucous. Stems erect or shortly decumbent at base, becoming erect, branched from near base. Leaves: usually only proximalmost opposite, sometimes to midstem, distal alternate, erect to ± spreading; stipular glands absent; blade of proximal leaves narrowly to broadly elliptic-oblanceolate, 10–15 × 1.5–2.5 mm, margins entire, not ciliate, apex subacute to acuminate; 1-nerved. Inflorescences slender thyrses. Pedicels 1–4 mm. Flowers: sepals persistent, linear-lanceolate to lanceolate, 3–5.3 mm, margins not scarious, inner ones conspicuously glandular-toothed, outer entire or very sparsely glandular-toothed, apex acute to acuminate; petals yellow, oblanceolate, 4–7 mm; stamens 3–5 mm; anthers 1–1.5 mm; staminodia absent; styles distinct, 1.5–3 mm; stigmas capitate. Capsules triangular-ovoid to broadly ovoid, 2.5–3.5 × 2.7–3.5 mm, apex obtuse, somewhat tardily dehiscing into 10, 1-seeded segments, segments persistent on plant, false septa incomplete, proximal margins ciliate. Seeds 2–2.5 × 1.1–1.3 mm. 2n = 26.


Phenology: Flowering (Mar–)Jul–Sep(–Nov).
Habitat: Pine and oak woodlands.
Elevation: (600–)1300–2900 m.

Distribution

V12 69-distribution-map.jpg

Ariz., N.Mex., Mexico (Baja California), Mexico (Chihuahua), Mexico (Sonora)

Discussion

Within its range, Linum neomexicanum is the only species of Linum with yellow flowers and distinct styles. Its inflorescence is more slender than other species. The corollas are nearly rotate and the styles may be at nearly right angles to the flower axis, to spreading, or to ultimately ascending. J. R. McDill (2009) found that L. neomexicanum is most closely related to L. kingii.

Selected References

None.

Lower Taxa

None.

"wider" is not a number.

... more about "Linum neomexicanum"
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 +
Greene +
Linopsis +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
glandular-toothed +  and entire +
elliptic-oblanceolate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
triangular-ovoid +  and broadly ovoid +
0.27 cm2.7 mm <br />0.0027 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
divided +
New Mexico yellow flax +
Ariz. +, N.Mex. +, Mexico (Baja California) +, Mexico (Chihuahua) +  and Mexico (Sonora) +
(600–)1300–2900 m. +
adnate +  and adherent +
spheric +
Pine and oak woodlands. +
glandular-toothed +
alternate +  and opposite +
erect +  and more or less spreading +
proximalmost +
not +  and glandular-toothed +
not scarious +
extrastaminal +
glandular-toothed +
apical-axile +, axile +  and placentation +
not +  and articulated +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
convolute +  and imbricate +
adnate +  and adherent +
coherent +  and distinct +
oblanceolate +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Flowering (Mar–)Jul–Sep(–Nov). +
multiporate +  and tricolpate +
mucilaginous +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
lenticular +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
persistent +
linear-lanceolate +  and lanceolate +
unequal +
0.3 cm3 mm <br />0.003 m <br /> (0.53 cm5.3 mm <br />0.0053 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
erect +  and decumbent +
ridged +  and terete +
clavate +, linear +  and capitate +
distinct +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Mesyniopsis +
Linum neomexicanum +
Linum sect. Linopsis +
species +
adnate +  and adherent +
glaucous +  and glabrous +
18] +, [15 +  and 13 +