Eriogonum alatum var. alatum

Common names: Winged wild buckwheat
Illustrated
Synonyms: Eriogonum alatum subsp. mogollense (S. Stokes ex M. E. Jones) S. Stokes Eriogonum alatum var. mogollense Eriogonum alatum subsp. triste (S. Watson) S. Stokes Eriogonum triste
Treatment appears in FNA Volume 5. Treatment on page 380.

Plants 5–13 (–17) dm. Aerial flowering-stems strigose. Leaves basal, infrequently cauline; basal: petiole 2–6 cm, strigose to woolly or glabrous, blade lanceolate to oblanceolate, (3–) 5–15 × 0.3–2 cm, strigose or glabrous except for margins and midveins; cauline: blade 1–6 cm. Inflorescences 2–10 dm; branches thinly strigose, infrequently glabrous at maturity. Peduncles strigose or nearly so. Involucres strigose or rarely glabrous. Perianths yellow to yellowish green. Achenes 5–8 × 3–6 mm. 2n = 40.


Phenology: Flowering Jun–Oct.
Habitat: Sandy to gravelly flats and slopes, mixed grassland, saltbush, and sagebrush communities, oak, pinyon and/or juniper, and montane conifer woodlands
Elevation: (500-)1300-3100(-4000) m

Distribution

V5 786-distribution-map.gif

Ariz., Colo., Kans., Nebr., N.Mex., Tex., Utah, Wyo., Mexico (Chihuahua)

Discussion

Variety alatum is widespread and often common from southeastern Wyoming and adjacent southwestern Nebraska southward through eastern Utah, Colorado, and western Kansas to northern Arizona, New Mexico, and northern and western Texas to northern Chihuahua, Mexico. The variety rarely is cultivated, as an individual plant may go up to seven (or more) years before flowering, after which it dies.

Inclusion here of var. mogollense, characterized by spatulate leaves and woolly petiole bases, is now suggested, as both features fail to hold in some populations near Flagstaff, Arizona, the center of its distribution.

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property.

beakless +  and 3-winged +
yellowish green;reddish-brown +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
included +  and exserted +
3-gonous +  and ridged +
usually red +  and cream or yellow +
oblong +  and ellipsoid or oval +
James L. Reveal +
Torrey in L. Sitgreaves +
deciduous +  and persistent +
stipelike +
Undefined subg. Pterogonum +
awn-tipped +  and simple +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
glabrous +  and strigose +
lanceolate;oblanceolate +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
0.3cm;2cm +
not awn-tipped +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
glandular +, pubescent +  and glabrous +
triangular +, scale-like +, linear +  and linear-lanceolate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
grooved +, disarticulating +  and dichotomous +
not brittle +
glabrous +  and strigose +
scabrellous +
ridged +, angled +  and round +
spreading +  and erect +
whorled +, opposite +  and alternate +
Winged wild buckwheat +
Ariz. +, Colo. +, Kans. +, Nebr. +, N.Mex. +, Tex. +, Utah +, Wyo. +  and Mexico (Chihuahua) +
(500-)1300-3100(-4000) m +
unisexual +, , +  and bisexual +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
not disarticulating +, hollow +  and solid +
decumbent to erect +  and prostrate +
not fistulose +
slender;stout +
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 +
Sandy to gravelly flats and slopes, mixed grassland, saltbush, and sagebrush communities, oak, pinyon and/or juniper, and montane conifer woodlands +
open +  and cymose +
capitate +  and subcapitate +
cymelike +, paniclelike +, racemelike +  and spikelike +
connate +  and free +
0.4 cm4 mm <br />0.004 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
glabrous +  and strigose +
turbinate +  and campanulate +
nonmembranous +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
in whorls +, opposite +, alternate +  and rosulate +
marcescent +
persistent +
cauline +  and basal +
bractlike +
pubescent +  and glabrous +
lobed +, undulate +, crisped +, crenulate +  and entire +
not swollen +
orthotropous +
accrescent +
curving +  and straight +
nearly;strigose +
erect to deflexed +
0.5 cm5 mm <br />0.005 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
strigose +  and woolly or glabrous +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Flowering Jun–Oct. +
homostylous +  and 3-carpellate +
in L. Sitgreaves, Rep. Exped. Zuni Colorado Rivers, +
, +  and solid +
slender;stout +
persistent +
Illustrated +
decumbent to erect +  and prostrate +
penicillate +, fimbriate +  and capitate +
deciduous +  and persistent +
? (?) +  and ? (?) +
coriaceous +  and membranous +
consisting of a series +  and tubular +
distinct +
erect;spreading or recurved +
Eriogonum alatum subsp. mogollense +, Eriogonum alatum var. mogollense +, Eriogonum alatum subsp. triste +  and Eriogonum triste +
Slender (?) +  and Stout (?) +
Eriogonum alatum var. alatum +
Eriogonum alatum +
variety +
emarginate +  and entire +
1/4 +  and 1/3 +
lanceolate +
coriaceous +
0.1 cm1 mm <br />0.001 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
annual +, biennial +  and perennial +
glabrous +  and strigose +
3 +, 2 +  and 1 +