Eriogonum scabrellum

Reveal

Ann. Missouri Bot. Gard. 55: 74. 1968.

Common names: Westwater wild buckwheat
Endemic
Treatment appears in FNA Volume 5. Treatment on page 399. Mentioned on page 384.

Herbs, spreading, annual, 1–3 (–5) dm, floccose and scabrellous, greenish to reddish or reddish-brown. Stems: caudex absent; aerial flowering-stems erect, solid, not fistulose, 0.5–1.5 dm, floccose and scabrellous. Leaves basal, sheathing up stems 1–3 cm; petiole 1–4 (–5) cm, floccose; blade cordate, 1–3 (–4) × 1–3 (–4) cm, densely white-tomentose abaxially, sparsely floccose and greenish to green adaxially, margins crisped and wavy. Inflorescences cymose, open, spreading, 5–40 × 20–100 cm; branches scabrellous; bracts 3, scalelike, 1–1.5 × 0.4–0.9 mm. Peduncles absent. Involucres horizontal, turbinate, 1.5–2.5 × 1.5–2 mm, scabrellous; teeth 5, erect, 0.4–0.6 mm. Flowers 1–1.5 mm; perianth white with greenish midribs, becoming pink to rose or deep red, pustulose; tepals dimorphic, those of outer whorl obovate, those of inner whorl ovate; stamens exserted, 1–1.5 mm; filaments glabrous. Achenes light-brown to brown, 3-gonous, 2 mm, glabrous. 2n = 40.


Phenology: Flowering Sep–Nov.
Habitat: Clayey to gravelly washes, flats, and slopes, saltbush, blackbrush, and sagebrush communities, pinyon-juniper woodlands
Elevation: 1400-2300 m

Discussion

Eriogonum scabrellum is widely scattered along the Colorado and San Juan river systems. It occurs from Grand Valley of Utah (Grand County) and Colorado (Mesa County), southward to the Lake Powell region of Utah (Garfield and Kane counties), and then to the Four Corners area of Utah (San Juan County), Colorado (Montezuma County), and New Mexico (San Juan County). It recently was collected in Chaco Canyon National Park in New Mexico, and just south of the town of Green River in Emery County, Utah.

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.

... more about "Eriogonum scabrellum"
light-brown;brown +
included +  and exserted +
3-gonous +
usually red +  and cream or yellow +
oblong +  and ellipsoid or oval +
James L. Reveal +
Reveal +
deciduous +  and persistent +
stipelike +
Eriogonum sect. Ganysma +
awn-tipped +  and simple +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
greenish +  and green +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
floccose +  and white-tomentose +
cordate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
not awn-tipped +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
glandular +, pubescent +  and glabrous +
scale-like +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
grooved +, disarticulating +  and dichotomous +
not brittle +
puberulent +, pilose-pubescent +, hispid +, sericeous +, floccose +, tomentose +  and lanate +
scabrellous +
ridged +, angled +  and round +
spreading +  and erect +
whorled +, opposite +  and alternate +
Westwater wild buckwheat +
Colo. +, N.Mex. +  and Utah. +
1400-2300 m +
unisexual +, , +  and bisexual +
not attenuate +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
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 +
Clayey to gravelly washes, flats, and slopes, saltbush, blackbrush, and sagebrush communities, pinyon-juniper woodlands +
open +  and cymose +
capitate +  and subcapitate +
racemose +, paniculate +  and cymose-paniculate +
5 cm50 mm <br />0.05 m <br /> (40 cm400 mm <br />0.4 m <br />) +
cymelike +, paniclelike +, racemelike +  and spikelike +
20 cm200 mm <br />0.2 m <br /> (100 cm1,000 mm <br />1 m <br />) +
connate +  and free +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
scabrellous +
nonmembranous +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
in whorls +, opposite +, alternate +  and rosulate +
marcescent +
persistent +
bractlike +
pubescent +  and glabrous +
wavy +  and crisped +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
deflexed;recurved;deflexed;recurved;cernuous;horizontal;spreading;ascending;erect +
erect to deflexed +
filiform;capillary +
pink;rose or deep red +
glabrous +, villous +, puberulent +, hirsute +, pilose +  and hispid +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Flowering Sep–Nov. +
homostylous +  and 3-carpellate +
Ann. Missouri Bot. Gard. +
, +  and solid +
slender;stout +
persistent +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
decumbent to erect +  and prostrate +
spreading +  and erect +
glabrous +, short-hispid +, villous +, hirsute +, floccose +  and tomentose +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
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 +
chambered +  and solid +
slender +  and stout +
Eriogonum scabrellum +
Eriogonum subg. Ganysma +
species +
emarginate +  and entire +
1/5 +  and 1/2 +
lobed +  and laciniate +
coriaceous +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
annual +  and perennial +
greenish +  and reddish or reddish-brown +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +