Eriogonum ostlundii

M. E. Jones

Contr. W. Bot. 11: 12. 1903.

Common names: Elsinore wild buckwheat
EndemicConservation concern
Synonyms: Eriogonum batemanii var. ostlundii (M. E. Jones) S. L. Welsh Eriogonum spathuliforme Rydberg Eriogonum spathulatum subsp. spathuliforme (Rydberg) S. Stokes Eriogonum tenellum subsp. ostlundii (M. E. Jones) S. Stokes
Treatment appears in FNA Volume 5. Treatment on page 271. Mentioned on page 236, 264, 272.
Revision as of 09:32, 30 July 2020 by imported>Volume Importer
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Herbs, spreading, not scapose, 2–3.5 (–4.5) × 1–2.5 dm, glabrous, grayish. Stems spreading, without persistent leaf-bases, up to 1/4 height of plant; caudex stems absent; aerial flowering-stems erect, slender, solid, not fistulose, 0.8–2 dm, glabrous. Leaves basal, 1 per node; petiole 1–2.5 (–3) cm, tomentose; blade elliptic to spatulate or broadly elliptic, 0.6–1.5 (–2) × 0.5–1 (–1.5) cm, densely white-tomentose abaxially, floccose and greenish adaxially, margins plane. Inflorescences cymose, 5–25 (–30) × 5–15 cm; branches dichotomous, glabrous; bracts 3, scalelike, triangular, 0.8–2 mm. Peduncles erect, slender, (0.5–) 1–3 (–5) cm, glabrous. Involucres 1 per node, turbinate to turbinate-campanulate, 2–3 × 1.8–2 (–2.2) mm, glabrous; teeth 5, erect, 0.5–0.8 mm. Flowers 1.5–2.5 mm; perianth white, glabrous; tepals connate proximal 1/5, monomorphic, obovate; stamens exserted, 2–4 mm; filaments pilose proximally. Achenes light-brown, 2.5–3 mm, glabrous.


Phenology: Flowering May–Sep.
Habitat: Gravelly or clayey flats and slopes, sagebrush communities, pinyon-juniper and montane conifer woodlands
Elevation: 1600-2100 m

Discussion

Eriogonum ostlundii is relatively common in Piute and Sevier counties, and just enters Garfield County. It is similar to E. spathulatum and could be confused with infrequent, glabrous individuals of that species that occur in Beaver County on the western deserts of Utah. The United States Forest Service considers E. ostlundii to be a “sensitive” species.

Selected References

None.

Lower Taxa

None.

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... more about "Eriogonum ostlundii"
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 +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
floccose +  and white-tomentose +
elliptic;spatulate or broadly elliptic +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not awn-tipped +
leaflike +  and semileaflike +
glandular +, pubescent +  and glabrous +
triangular +  and scale-like +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
not brittle +
spreading +  and erect +
scabrellous +
ridged +, angled +  and round +
spreading +  and erect +
whorled +, opposite +  and alternate +
Elsinore wild buckwheat +
1600-2100 m +
unisexual +, , +  and bisexual +
not attenuate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 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 +
Gravelly or clayey flats and slopes, sagebrush communities, pinyon-juniper and montane conifer woodlands +
reduced +
capitate +  and subcapitate +
25 cm250 mm <br />0.25 m <br /> (30 cm300 mm <br />0.3 m <br />) +
dense +  and diffuse +
5 cm50 mm <br />0.05 m <br /> (25 cm250 mm <br />0.25 m <br />) +
cymelike +, paniclelike +, racemelike +  and spikelike +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
connate +  and free +
0.2 cm2 mm <br />0.002 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
turbinate +  and turbinate-campanulate +
nonmembranous +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
in whorls +, opposite +, alternate +  and rosulate +
persistent +
bractlike +
pubescent +  and glabrous +
not swollen +
orthotropous +
accrescent +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
curved +  and straight +
erect to deflexed +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Flowering May–Sep. +
homostylous +  and 3-carpellate +
Contr. W. Bot. +
, +  and solid +
slender;stout +
persistent +
Endemic +  and Conservation concern +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
decumbent to erect +  and prostrate +
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 batemanii var. ostlundii +, Eriogonum spathuliforme +, Eriogonum spathulatum subsp. spathuliforme +  and Eriogonum tenellum subsp. ostlundii +
chambered +  and solid +
slender +  and stout +
Eriogonum ostlundii +
Eriogonum subg. Eucycla +
species +
emarginate +  and entire +
0 +  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 />) +
persistent +
membranous +
pubescent +  and glabrous +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +