Eriogonum ephedroides

Reveal

Madroño 19: 295, fig. 4. 1969.

Common names: Ephedra wild buckwheat
Endemic
Synonyms: Eriogonum brevicaule var. ephedroides (Reveal) S. L. Welsh
Treatment appears in FNA Volume 5. Treatment on page 268. Mentioned on page 236, 241, 264.

Herbs, erect, not scapose, 2–3.5 × 2–3 (–4) dm, glabrous, grayish green. Stems spreading, without persistent leaf-bases, up to 1/8 height of plant; caudex stems absent; aerial flowering-stems erect, slender, solid, not fistulose, 1–2 dm, glabrous, tomentose among leaves. Leaves basal, 1 per node; petiole 0.5–1 cm, glabrous; blade lanceolate, 1.5–2.5 × 0.2–0.3 cm, densely white-tomentose abaxially, mostly glabrous and green adaxially, margins plane. Inflorescences narrowly cymose, 15–25 × 5–15 cm; branches dichotomous, upper secondaries suppressed, glabrous; bracts 3, linear to triangular, scalelike, 1–4 (–7) mm. Peduncles erect, 0.5–1.5 cm at proximal nodes, 0.1–0.5 cm at distal nodes. Involucres 1 per node, turbinate, 2–2.5 × 1–1.5 mm, glabrous; teeth 5, erect, 0.4–0.5 mm. Flowers 2–2.5 mm; perianth ochroleucous to pale-yellow or, rarely, yellow, glabrous; tepals connate proximal 1/4, monomorphic, lanceolate; stamens exserted, 1.5–2 mm; filaments pilose proximally. Achenes brown, 2–2.5 mm, glabrous.


Phenology: Flowering Jun–Oct.
Habitat: Shale and clay flats and slopes, saltbush and sagebrush communities, pinyon-juniper woodlands
Elevation: 1500-2100 m

Discussion

Eriogonum ephedroides is infrequently encountered in eastern Uintah County, Utah, and western Rio Blanco County, Colorado. The narrow, upright flowering stems and inflorescence branches and the strictly basal leaves quickly set the species apart from E. viridulum. This is a species of potential horticultural value, being an elegant addition to the garden because of its habit.

Selected References

None.

Lower Taxa

None.

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... more about "Eriogonum ephedroides"
included +  and exserted +
3-gonous +
usually red +  and cream or yellow +
oblong +  and ellipsoid or oval +
acute;obtuse or rounded +
James L. Reveal +
Reveal +
deciduous +  and persistent +
stipelike +
Undefined subg. Eucycla +
papillate +
awn-tipped +  and simple +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
glabrous +  and white-tomentose +
lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
not awn-tipped +
leaflike +  and semileaflike +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
glandular +, pubescent +  and glabrous +
scale-like +, linear +  and triangular +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
not brittle +
spreading +  and erect +
tomentose +  and floccose or glabrous occasionally lanate or glandular +
scabrellous +
ridged +, angled +  and round +
spreading +  and erect +
whorled +, opposite +  and alternate +
Ephedra wild buckwheat +
Colo. +  and Utah. +
1500-2100 m +
unisexual +, , +  and bisexual +
not attenuate +
0.2 cm2 mm <br />0.002 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 +
Shale and clay flats and slopes, saltbush and sagebrush communities, pinyon-juniper woodlands +
reduced +
capitate +  and subcapitate +
dense +  and diffuse +
15 cm150 mm <br />0.15 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 /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
nonmembranous +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
in whorls +, opposite +, alternate +  and rosulate +
persistent +
bractlike +
pubescent +  and glabrous +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
yellow;,;ochroleucous;pale-yellow +
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 />) +
Flowering Jun–Oct. +
homostylous +  and 3-carpellate +
, +  and solid +
slender;stout +
persistent +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 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 brevicaule var. ephedroides +
chambered +  and solid +
slender +  and stout +
Eriogonum ephedroides +
Eriogonum subg. Eucycla +
species +
emarginate +  and entire +
0 +  and 1/2 +
lanceolate +
coriaceous +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +