Eriogonum alatum var. glabriusculum

Torrey in War Department [U.S.]

in War Department [U.S.], Pacif. Railr. Rep. 4(5): 131. 1857.

Common names: Canadian River wild buckwheat
Endemic
Treatment appears in FNA Volume 5. Treatment on page 380. Mentioned on page 379.

Plants 10–20 (–25) dm. Aerial flowering-stems glabrous or nearly so. Leaves basal and cauline; basal: petiole 2–5, strigose, blade linear-lanceolate to lanceolate, 8–20 × 0.5–1.5 cm, slightly strigose or glabrous adaxially, glabrous abaxially except for strigose margins and midveins; cauline: blade 1–9 cm. Inflorescences 2–6.5 dm; branches glabrous. Peduncles glabrous or occasionally slightly strigose. Involucres glabrous. Perianths yellow to yellowish green or maroon. Achenes 5.5–9 × 3–5.5 mm. 2n = 40.


Phenology: Flowering Jul–Oct.
Habitat: Sandy to gravelly flats and gentle slopes, mixed grassland, saltbush, and mesquite communities, oak woodlands
Elevation: 300-1400 m

Discussion

Variety glabriusculum is a distinctive taxon of the southern Great Plains, often being the tallest plants on the low, rolling hills. It is geographically isolated from var. alatum, being found near Ruth in Curry County, New Mexico, in western Oklahoma, and in northern Texas.

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 +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
included +  and exserted +
3-gonous +  and ridged +
3mm;5.5mm +
usually red +  and cream or yellow +
oblong +  and ellipsoid or oval +
James L. Reveal +
Torrey in War Department [U.S.] +
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 />) +
8 cm80 mm <br />0.08 m <br /> (20 cm200 mm <br />0.2 m <br />) +
glabrous +  and strigose +
linear-lanceolate;lanceolate +
1 cm10 mm <br />0.01 m <br /> (9 cm90 mm <br />0.09 m <br />) +
0.5cm;1.5cm +
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 +
scabrellous +
ridged +, angled +  and round +
spreading +  and erect +
whorled +, opposite +  and alternate +
Canadian River wild buckwheat +
N.Mex. +, Okla. +  and Tex. +
300-1400 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 gentle slopes, mixed grassland, saltbush, and mesquite communities, oak 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 />) +
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 +
lobed +, undulate +, crisped +, crenulate +  and entire +
not swollen +
orthotropous +
accrescent +
curving +  and straight +
strigose;glabrous +
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 +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Flowering Jul–Oct. +
homostylous +  and 3-carpellate +
in War Department [U.S.], Pacif. Railr. Rep. +
, +  and solid +
slender;stout +
persistent +
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 +
Pterogonum alatum +
Slender (?) +  and Stout (?) +
Eriogonum alatum var. glabriusculum +
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 +