Eriogonum alatum

Torrey in L. Sitgreaves

in L. Sitgreaves, Rep. Exped. Zuni Colorado Rivers, 168, plate 8. 1853.

Illustrated
Synonyms: Pterogonum alatum (Torrey) H. Gross
Treatment appears in FNA Volume 5. Treatment on page 379. Mentioned on page 218, 376, 380.

Herbs, monocarpic, 5–20 (–25) dm, strigose or glabrous; taproot often chambered. Stems: caudex absent; aerial flowering-stems usually 1, not fistulose, 2–13 dm, strigose or glabrous. Leaves basal and sometimes cauline; basal petiolate, petiole 2–6 cm, stigose to woolly or glabrous, blade linear-lanceolate or lanceolate to oblanceolate to spatulate, (3–) 5–20 × 0.3–2 cm, strigose, becoming glabrous and green on both surfaces except for margins and midvein; cauline sessile, blade linear-oblanceolate to lanceolate, 1–9 × 0.3–0.8 (–1) cm, similar to basal blade. Inflorescences 2–10 dm; branches strigose or glabrous; bracts semileaflike proximally, linear to linear-lanceolate, 2–9 × 1–3 mm, scalelike distally, triangular, 0.8–5 × 0.5–2 mm. Peduncles erect, straight or curving upward, 0.5–3.5 cm, strigose or glabrous. Involucres turbinate to campanulate, 2–4 (–4.5) × 2–4 (–4.5) mm, strigose or glabrous; teeth 1–1.8 mm. Flowers 1.5–2.5 mm in anthesis, 3–6 mm in fruit; perianth yellow to yellowish green, rarely maroon in anthesis, often reddish or maroon in fruit, glabrous; tepals lanceolate; stamens 1.5–3 mm; filaments glabrous. Achenes yellowish green to reddish-brown, 5–9 mm, glabrous, 3-winged entire length, beakless.

Distribution

V5 785-distribution-map.gif

Ariz., Colo., Kans., N.Mex., Nebr., Okla., Tex., Utah, Wyo., including Mexico

Discussion

Varieties 2 (2 in the flora).

The mature reddish roots of Eriogonum alatum can be distinctively chambered. The Navajo (Diné) people consider the species to be a “life medicine” (L. C. Wyman and S. K. Harris 1951), using a mixture of shredded roots and water primarily to treat internal ailments. The species is used also as a ceremonial medicine (P. A. Vestal 1952). The Zuni use it as an emetic for stomachaches (S. Camazine and R. A. Bye 1980).

Selected References

None.

Key

1 Flowering stems and inflorescence branches usually strigose; peduncles strigose or nearly so; involucres strigose, rarely glabrous; plants 5-13(-17) dm; n Arizona, Colorado, w Kansas, sw Nebraska, New Mexico, w Texas, e Utah, se Wyoming Eriogonum alatum var. alatum
1 Flowering stems and inflorescence branches glabrous or nearly so; peduncles glabrous, occasionally slightly strigose; involucres glabrous; plants 10-20(-25) dm; ne New Mexico, w Oklahoma, n Texas Eriogonum alatum var. glabriusculum

"entire" is not a number."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.

... more about "Eriogonum alatum"
beakless +  and 3-winged +
yellowish green;reddish-brown +
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 />) +
1 cm10 mm <br />0.01 m <br /> (9 cm90 mm <br />0.09 m <br />) +
glabrous +  and strigose +
linear-oblanceolate;lanceolate +
0.3cm;0.8cm +
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 +
Ariz. +, Colo. +, Kans. +, N.Mex. +, Nebr. +, Okla. +, Tex. +, Utah +, Wyo. +  and including Mexico +
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 +
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 +
glabrous;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 +
stigose +  and woolly or glabrous +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
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 +
Pterogonum alatum +
Slender (?) +  and Stout (?) +
Eriogonum alatum +
Eriogonum subg. Pterogonum +
species +
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 +