Eriogonum ammophilum

Reveal

Phytologia 23: 163. 1972.

Common names: Ibex wild buckwheat
EndemicConservation concern
Synonyms: Eriogonum nummulare var. ammophilum (Reveal) S. L. Welsh
Treatment appears in FNA Volume 5. Treatment on page 251. Mentioned on page 232.

Subshrubs, spreading to somewhat sprawling, not scapose, (1.5–) 2–4 × 2–5 dm, glabrous, grayish. Stems decumbent to spreading, without persistent leaf-bases, up to 1/4 height of plant; caudex stems absent or slightly spreading in moving sand; aerial flowering-stems spreading, slender, solid, not fistulose, 0.5–1.5 dm, glabrous. Leaves basal or sheathing up proximal 1/4 of flowering-stems, 1 per node; petiole 0.1–0.5 (–1) cm, tomentose to floccose; blade broadly elliptic, 1–2 (–2.5) × 0.8–1.7 cm, densely white-tomentose abaxially, less so to subglabrous and green adaxially, margins plane. Inflorescences cymose, open, 5–20 × 5–20 cm; branches dichotomous, glabrous; bracts 3, scalelike, triangular, 1–2.5 mm. Peduncles absent or erect, restricted to proximal nodes, (0.2–) 0.5–1 (–1.5) cm, glabrous. Involucres 1 per node, turbinate, (2.5–) 3–3.5 × 2–2.5 mm, glabrous; teeth 5, erect, 0.4–0.8 mm. Flowers 2–3 mm; perianth white, glabrous; tepals connate proximal 1/4, essentially monomorphic, narrowly obovate; stamens slightly exserted, 2.5–3.5 mm; filaments puberulent proximally. Achenes light-brown, 3–3.5 mm, glabrous except for distinctly papillate beak.


Phenology: Flowering Jun–Sep.
Habitat: Sandy flats and washes, mixed grassland and sagebrush communities, pinyon-juniper woodlands
Elevation: 1600-1900 m

Discussion

Of conservation concern.

Eriogonum ammophilum is known only from a few, scattered locations in Millard County. It is considered to be a “sensitive” species by the Bureau of Land Management.

Selected References

None.

Lower Taxa

None.

"/2" 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."dm" is not declared as a valid unit of measurement for this property.

... more about "Eriogonum ammophilum"
light-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 +
Undefined subg. Eucycla +
papillate +
awn-tipped +  and simple +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
subglabrous +  and white-tomentose +
linear;orbiculate +
0.8cm;1.7cm +
not awn-tipped +
leaflike +  and semileaflike +
glandular +, pubescent +  and glabrous +
triangular +  and scale-like +
not brittle +
spreading +  and erect +
scabrellous +
ridged +, angled +  and round +
whorled +, opposite +  and alternate +
Ibex wild buckwheat +
1600-1900 m +
unisexual +, , +  and bisexual +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
decumbent to erect +  and prostrate +
not fistulose +
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 flats and washes, mixed grassland and sagebrush communities, pinyon-juniper woodlands +
reduced +
open +  and cymose +
capitate +  and subcapitate +
dense +  and diffuse +
cymelike +, paniclelike +, racemelike +  and spikelike +
connate +  and free +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
nonmembranous +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
in whorls +, opposite +, alternate +  and rosulate +
persistent +
bractlike +
pubescent +  and glabrous +
not swollen +
orthotropous +
accrescent +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
curved +  and straight +
erect to deflexed +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
tomentose +  and floccose +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Flowering Jun–Sep. +
homostylous +  and 3-carpellate +
, +  and solid +
slender;stout +
persistent +
Endemic +  and Conservation concern +
decumbent to erect +  and prostrate +
decumbent +  and spreading +
penicillate +, fimbriate +  and capitate +
deciduous +  and persistent +
? (?) +  and ? (?) +
coriaceous +  and membranous +
consisting of a series +  and tubular +
distinct +
erect;spreading or recurved +
Eriogonum nummulare var. ammophilum +
chambered +  and solid +
Slender (?) +  and Stout (?) +
Eriogonum ammophilum +
Eriogonum subg. Eucycla +
species +
emarginate +  and entire +
0 +  and 1/2 +
obovate +
coriaceous +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
spreading to somewhat +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +