Eriogonum ampullaceum

J. T. Howell

Leafl. W. Bot 1: 179. 1935.

Common names: Mono wild buckwheat
Endemic
Synonyms: Eriogonum mohavense subsp. ampullaceum (J. T. Howell) S. Stokes
Treatment appears in FNA Volume 5. Treatment on page 416. Mentioned on page 414, 417, 425.

Herbs, erect, 1–3 dm, glabrous, yellowish green to gray. Stems: aerial flowering-stems erect, 0.2–1 dm, glabrous. Leaves basal; petiole 0.5–4 cm, tomentose; blade orbiculate to subcordate, 0.5–2 (–2.5) × 0.5–2 (–2.5) cm, white-tomentose abaxially, tomentose to floccose and grayish or greenish adaxially. Inflorescences cymose, open, narrow, 5–25 × 5–10 (–15) cm; branches glabrous; bracts 0.5–1.5 × 1–2 mm. Peduncles absent. Involucres terminal at tips of slender branchlets at least proximally, not appressed to branches, turbinate-campanulate, 1.5–2 × 1.5–2 mm, glabrous; teeth 5, erect, 0.5–0.8 mm. Flowers 1–1.5 mm; perianth cream, reddish green to reddish proximally, glabrous; tepals monomorphic, obovate; stamens exserted, 1–1.5 mm; filaments pilose proximally. Achenes brown, lenticular, 1–1.3 mm.


Phenology: Flowering Jul–Sep.
Habitat: Sandy flats and slopes, sagebrush communities, pinyon-juniper, conifer woodlands
Elevation: 1700-2200 m

Discussion

Eriogonum ampullaceum is the Great Basin counterpart to E. mohavense of the Mojave Desert. It is found along the eastern edge of the Sierra Nevada in Mono County, California, mainly in the Bridgeport, Mono Lake, and Long Valley areas (south of Mammoth). It occurs also in Alkali Valley in Mineral County, Nevada, and to the south in Fish Lake Valley of Esmeralda County. The species recently has been seen as a roadside weed along U.S. Highway 395 near Big Pine in Inyo County, California. The plants typically are infrequent and only occasionally locally common. The species is considered “sensitive” in Nevada.

Selected References

None.

Lower Taxa

None.

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

... more about "Eriogonum ampullaceum"
included +  and exserted +
lenticular +
usually red +  and cream or yellow +
oblong +  and ellipsoid or oval +
James L. Reveal +
J. T. Howell +
deciduous +  and persistent +
stipelike +  and acute +
Eriogonum sect. Oregonium +
awn-tipped +  and simple +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
greenish +  and grayish +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
tomentose +  and floccose +
orbiculate;subcordate +
0.5cm;2cm +
not awn-tipped +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
glandular +, pubescent +  and glabrous +
scale-like +
0.1 cm1 mm <br />0.001 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 +
Mono wild buckwheat +
Calif. +  and Nev. +
1700-2200 m +
unisexual +, , +  and bisexual +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
narrowing +
not disarticulating +  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 flats and slopes, sagebrush communities, pinyon-juniper, conifer woodlands +
open +  and cymose +
capitate +  and subcapitate +
10 cm100 mm <br />0.1 m <br /> (15 cm150 mm <br />0.15 m <br />) +
cymelike +, paniclelike +, racemelike +  and spikelike +
connate +  and free +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
turbinate-campanulate +
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 +
lobed +, undulate +, crisped +, crenulate +  and entire +
not swollen +
orthotropous +
accrescent +
erect to deflexed +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
0.5 cm5 mm <br />0.005 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Flowering Jul–Sep. +
homostylous +  and 3-carpellate +
Leafl. W. Bot +
, +  and solid +
slender;stout +
persistent +
decumbent to erect +  and prostrate +
erect +, ascending +  and prostrate +
penicillate +, fimbriate +  and capitate +
deciduous +  and persistent +
? (?) +  and ? (?) +
coriaceous +  and membranous +
consisting of a series +  and tubular +
distinct +
erect;spreading or recurved +
Eriogonum mohavense subsp. ampullaceum +
chambered +  and solid +
Slender (?) +  and Stout (?) +
Eriogonum ampullaceum +
Eriogonum subg. Oregonium +
species +
emarginate +  and entire +
1/4 +  and 1/2 +
obovate +
coriaceous +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
involucral +
persistent +
membranous +
pubescent +  and glabrous +
short-pilose +, puberulent +, sericeous +, floccose +  and tomentose or lanate +
yellowish green +  and gray +
annual +, biennial +  and perennial +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +