Eriogonum nummulare

M. E. Jones

Contr. W. Bot. 11: 13. 1903.

Common names: Money or Kearney wild buckwheat
Endemic
Synonyms: Eriogonum dudleyanum S. Stokes Eriogonum kearneyi Tidestrom Eriogonum kearneyi var. monoense (S. Stokes) Reveal Eriogonum kearneyi subsp. monoense (S. Stokes) Munz ex Reveal Eriogonum nodosum var. kearneyi (Tidestrom) S. Stokes Eriogonum nodosum subsp. monoense S. Stokes
Treatment appears in FNA Volume 5. Treatment on page 250. Mentioned on page 227, 231, 238, 249.

Shrubs, spreading or rarely sprawling, not scapose, (1.5–) 3–8 (–10) × 3–12 (–15) dm, tomentose or rarely floccose to glabrate, grayish. Stems decumbent to spreading, often without persistent leaf-bases, up to 1/3 height or more of plant; caudex stems absent or spreading in moving sand; aerial flowering-stems spreading, slender to stout, solid, not fistulose, 0.5–1 dm, tomentose to floccose. Leaves cauline, 1 per node; petiole 0.2–1 cm, tomentose to floccose; blade broadly oblanceolate to elliptic or, rarely, orbiculate, (0.5–) 1–3 × 0.4–1.2 (–1.5) cm, densely white-tomentose abaxially, less so and greenish adaxially, margins plane. Inflorescences cymose, open, 5–50 × 5–80 cm; branches dichotomous proximally, often with involucres racemosely arranged distally, tomentose to thinly floccose, rarely glabrate; bracts 3, scalelike, linear to triangular, 0.5–6 mm. Peduncles absent or erect, 0.5–3 cm, tomentose. Involucres 1 per node, turbinate to turbinate-campanulate, 2–3 × 1.5–2.7 mm, tomentose or nearly so; teeth 5, erect, 0.1–0.4 mm. Flowers 1.5–3 mm; perianth white, glabrous; tepals connate proximal 1/4, essentially monomorphic, obovate; stamens slightly to long-exserted, 2–5 mm; filaments subglabrous or sparsely puberulent proximally. Achenes light-brown, 2–3 mm, glabrous. 2n = 80.


Phenology: Flowering Jul–Oct.
Habitat: Sandy to occasionally gravelly washes, flats, and slopes, saltbush and sagebrush communities, pinyon-juniper woodlands
Elevation: 800-2600 m

Distribution

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Ariz., Calif., Nev., Utah.

Discussion

Eriogonum nummulare occurs primarily in the Intermountain West from Inyo, Lassen, and Mono counties in California eastward across central and southern Nevada to western and southern Utah. It is found also in northern Mohave and northwestern Coconino counties in Arizona.

This species is the food plant of the pallid dotted-blue butterfly (Euphilotes pallescens pallescens) and the Sand Mountain blue butterfly (Euphilotes pallescens arenamontana) is an unprotected subspecies restricted to Sand Mountain in Churchill County, Nevada, where its host plant, Eriogonum nummulare, currently is subject to continued destruction due to unrestricted off-road vehicle activities.

Selected References

None.

Lower Taxa

None.

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... more about "Eriogonum nummulare"
light-brown +
included +  and exserted +
3-gonous +
usually red +  and cream or yellow +
oblong +  and ellipsoid or oval +
acute;obtuse or rounded +
James L. Reveal +
M. E. Jones +
deciduous +  and persistent +
stipelike +
Undefined subg. Eucycla +
papillate +
awn-tipped +  and simple +
0.5 cm5 mm <br />0.005 m <br /> - 1 cm10 mm <br />0.01 m <br /> +
1.2 cm12 mm <br />0.012 m <br /> - 1.5 cm15 mm <br />0.015 m <br /> +
1 cm10 mm <br />0.01 m <br /> - 3 cm30 mm <br />0.03 m <br /> +
white-tomentose +
orbiculate;,;broadly oblanceolate;elliptic +
0.4 cm4 mm <br />0.004 m <br /> - 1.2 cm12 mm <br />0.012 m <br /> +
not awn-tipped +
leaflike +  and semileaflike +
glandular +, pubescent +  and glabrous +
linear +  and triangular +
0.05 cm0.5 mm <br />5.0e-4 m <br /> - 0.6 cm6 mm <br />0.006 m <br /> +
not brittle +
spreading +  and erect +
glabrate +, tomentose +  and thinly floccose +
scabrellous +
ridged +, angled +  and round +
whorled +, opposite +  and alternate +
Money or Kearney wild buckwheat +
Ariz. +, Calif. +, Nev. +  and Utah. +
800-2600 m +
puberulent +  and subglabrous +
unisexual +, , +  and bisexual +
not attenuate +
0.15 cm1.5 mm <br />0.0015 m <br /> - 0.3 cm3 mm <br />0.003 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 +
Sandy to occasionally gravelly washes, flats, and slopes, saltbush and sagebrush communities, pinyon-juniper woodlands +
reduced +
open +  and cymose +
capitate +  and subcapitate +
dense +  and diffuse +
5 cm50 mm <br />0.05 m <br /> - 50 cm500 mm <br />0.5 m <br /> +
cymelike +, paniclelike +, racemelike +  and spikelike +
5 cm50 mm <br />0.05 m <br /> - 80 cm800 mm <br />0.8 m <br /> +
connate +  and free +
0.2 cm2 mm <br />0.002 m <br /> - 0.3 cm3 mm <br />0.003 m <br /> +
nearly +  and tomentose +
turbinate +  and turbinate-campanulate +
nonmembranous +
0.15 cm1.5 mm <br />0.0015 m <br /> - 0.27 cm2.7 mm <br />0.0027 m <br /> +
in whorls +, opposite +, alternate +  and rosulate +
persistent +
bractlike +
pubescent +  and glabrous +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
0.5 cm5 mm <br />0.005 m <br /> - 3 cm30 mm <br />0.03 m <br /> +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
tomentose +  and floccose +
0.2 cm2 mm <br />0.002 m <br /> - 1 cm10 mm <br />0.01 m <br /> +
Flowering Jul–Oct. +
homostylous +  and 3-carpellate +
Contr. W. Bot. +
, +  and solid +
slender;stout +
persistent +
long-exserted +
0.2 cm2 mm <br />0.002 m <br /> - 0.5 cm5 mm <br />0.005 m <br /> +
decumbent to erect +  and prostrate +
decumbent +  and spreading +
glandular +, pubescent +  and glabrous +
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 +
Eriogonum dudleyanum +, Eriogonum kearneyi +, Eriogonum kearneyi var. monoense +, Eriogonum kearneyi subsp. monoense +, Eriogonum nodosum var. kearneyi +  and Eriogonum nodosum subsp. monoense +
chambered +  and solid +
slender +  and stout +
Eriogonum nummulare +
Eriogonum subg. Eucycla +
species +
emarginate +  and entire +
0 +  and 1/2 +
obovate +
coriaceous +
0.01 cm0.1 mm <br />1.0e-4 m <br /> - 0.04 cm0.4 mm <br />4.0e-4 m <br /> +
persistent +
membranous +
pubescent +  and glabrous +
sprawling;spreading +
rarely floccose +  and glabrate +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +