Stenogonum salsuginosum

Nuttall

Proc. Acad. Nat. Sci. Philadelphia 4: 19. 1848.

Common names: Smooth two-whorl buckwheat
IllustratedEndemic
Synonyms: Eriogonum salsuginosum (Nuttall) Hooker
Treatment appears in FNA Volume 5. Treatment on page 432. Mentioned on page 431.
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Stems mostly spreading, 0.5–2 dm, glabrous. Leaves basal and cauline; basal petiolate, petiole 0.5–2 cm, blade spatulate, (1–) 2–4 × (0.5–) 1–2.5 cm, glabrous; cauline sessile, blade narrowly lanceolate to oblanceolate, 0.5–4.5 × 0.2–1 cm. Inflorescences spreading, 0.5–2.5 (–3) dm, glabrous, occasionally glandular at proximal nodes; bracts 0.5–4 mm. Peduncles straight, slender to filiform, 0.1–4 cm, glabrous, or absent. Involucral-bracts 2–8 × 2–3 mm, glabrous. Flowers: perianth yellow, 1.5–3 mm; tepals lanceolate; filaments 1.5–2 mm; anthers 0.2–0.3 mm. Achenes 2–2.5 mm. 2n = 40.


Phenology: Flowering Apr–Sep.
Habitat: Clay hills and flats, saltbush communities
Elevation: 1300-2200 m

Distribution

V5 901-distribution-map.gif

Ariz., Colo., N.Mex., Utah, Wyo.

Discussion

Stenogonum salsuginosum is common to abundant and even weedy on the Colorado Plateau. The species occurs from Washakie County, Wyoming, southward into eastern Utah and extreme western Colorado to northern Arizona (just entering Mohave County) and northwestern New Mexico.

Selected References

None.

Lower Taxa

None.

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... more about "Stenogonum salsuginosum"
light-brown +
3-gonous +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
James L. Reveal +
Nuttall +
stipelike +
awn-tipped +  and simple +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
narrowly lanceolate;oblanceolate +
0.2 cm2 mm <br />0.002 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not awn-tipped +
glandular +  and glabrous +
triangular +  and scale-like +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
disarticulating +  and dichotomous +
not brittle +
glabrous +, glandular +  and strigose +
just below the soil surface or and above the soil surface +  and spreading +
Smooth two-whorl buckwheat +
Ariz. +, Colo. +, N.Mex. +, Utah +  and Wyo. +
1300-2200 m +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
unisexual +  and bisexual +
disarticulating +  and solid +
decumbent to erect +  and prostrate +
unwinged +  and winged +
black +, red +, brown +  and yellowish +
exserted +  and included +
pubescent +  and glabrous +
spheroidal +, 4-gonous +, lenticular +, biconvex +, discoid +, 3-gonous +  and 2-gonous +
Clay hills and flats, saltbush communities +
cymelike +, paniclelike +, racemelike +  and spikelike +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
urceolate +, campanulate +, turbinate +, prismatic +  and cylindric +
nonmembranous +
alternate +  and rosulate +
persistent +
cauline +  and basal +
bractlike +
pubescent +  and glabrous +
lobed +, undulate +, crisped +, crenulate +  and entire +
not swollen +
orthotropous +
accrescent +
erect to deflexed +
0.1 cm1 mm <br />0.001 m <br /> (4 cm40 mm <br />0.04 m <br />) +
urceolate +  and campanulate +
accrescent +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering Apr–Sep. +
homostylous +  and 3-carpellate +
Proc. Acad. Nat. Sci. Philadelphia +
, +  and solid +
slender;stout +
Illustrated +  and Endemic +
disarticulating +  and solid +
decumbent to spreading or erect +  and prostrate +
not fistulose +
penicillate +, fimbriate +  and capitate +
deciduous +  and persistent +
2-lobed +  and cylindric +
coriaceous +  and membranous +
consisting of a series +  and tubular +
distinct +
erect;spreading or recurved +
spreading;erect +
Eriogonum salsuginosum +
chambered +, , +  and solid +
Stenogonum salsuginosum +
Stenogonum +
species +
lanceolate +
coriaceous +
persistent +
membranous +
pubescent +  and glabrous +
3 +  and 2 +