Linum hudsonioides

Planchon

London J. Bot. 7: 186. 1848.

Common names: Texas flax
Endemic
Treatment appears in FNA Volume 12. Treatment on page 386. Mentioned on page 379, 387.

Herbs, annual, 5–30 cm, hirsutulous on angles distally, otherwise glabrous. Stems ascending to erect, branched from base. Leaves proximalmost opposite, distal alternate, imbricate throughout, proximal leaves spreading to ascending, distal closely appressed; stipular glands absent; blade awl-shaped, 5–10 × 0.5–1 mm, margins entire, distalmost narrowly scarious, not ciliate, apex of proximal leaves sharp-pointed, distal with short, slender terminal awn. Inflorescences panicles; bracts not ciliate. Pedicels 3–15 mm. Flowers: sepals persistent, lanceolate to ovate, 4.5–7 mm, margins broadly scarious, entire, or sparsely delicately toothed or, in age, ± lacerate, not glandular-toothed, apex conspicuously awn-tipped; petals yellow, with or without dark red base, obovate, 8–12 mm; stamens 5 mm; anthers 1–1.6 mm; staminodia absent; styles connate to 0.3–1.1 mm of apex, 2.7–6.3 mm; stigmas capitate. Capsules broadly ovoid, 2.7–3.5 × 2.8–3.6 mm, apex rounded, dehiscing into 5, 2-seeded segments, segments persistent plant, false septa entirely hyaline, or with very narrow, uniform, distal cartilaginous portion, margins tomentose near apex. Seeds 2–2.7 × 1–1.2 mm. 2n = 30.


Phenology: Flowering Mar–Sep.
Habitat: Sandy or gravelly prairies.
Elevation: 100–1400 m.

Distribution

V12 185-distribution-map.jpg

Kans., N.Mex., Okla., Tex.

Discussion

The corollas of Linum hudsonioides are very broadly bowl-shaped to nearly rotate and yellow, sometimes with a broad wine red band near the base. The filaments and styles are yellow or dark pinkish, anthers are yellow, and stigmas are bright green to yellowish. Its stems are nearly smooth proximally, ribbed distally. Linum hudsonioides occurs mainly in west-central Texas, the trans-Pecos region of western Texas, Harding and San Miguel counties of northeastern New Mexico, and southwestern Oklahoma; it is known in Kansas from a single historic record from Sedgwick County.

Selected References

None.

Lower Taxa

None.

"wider" is not a number.

... more about "Linum hudsonioides"
0.1 cm1 mm <br />0.001 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
rounded +  and sharp-pointed +
Nancy R. Morin +
Planchon +
Linopsis +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
glandular-toothed +  and entire +
awl--shaped +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
0.27 cm2.7 mm <br />0.0027 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.28 cm2.8 mm <br />0.0028 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
divided +
Texas flax +
imbricate +  and alternate +
Kans. +, N.Mex. +, Okla. +  and Tex. +
100–1400 m. +
incomplete +  and complete +
adnate +  and adherent +
spheric +
Sandy or gravelly prairies. +
proximalmost +
not glandular-toothed +, lacerate +, , +, toothed +  and entire +
extrastaminal +
apical-axile +, axile +  and placentation +
not +  and articulated +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
convolute +  and imbricate +
adnate +  and adherent +
coherent +  and distinct +
obovate +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Flowering Mar–Sep. +
multiporate +  and tricolpate +
spreading +  and ascending +
London J. Bot. +
mucilaginous +
0.2 cm2 mm <br />0.002 m <br /> (0.27 cm2.7 mm <br />0.0027 m <br />) +
lenticular +
0.1 cm1 mm <br />0.001 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
persistent +
lanceolate +  and ovate +
unequal +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
5 cm50 mm <br />0.05 m <br /> (?) +
ascending +  and erect +
ridged +  and terete +
clavate +, linear +  and capitate +
0.27 cm2.7 mm <br />0.0027 m <br /> (0.63 cm6.3 mm <br />0.0063 m <br />) +
Mesyniopsis +
Linum hudsonioides +
Linum sect. Linopsis +
species +
adnate +  and adherent +
persistent +  and annual +
plant +  and herb +
glabrous +  and hirsutulous +
18] +, [15 +  and 13 +