Eriogonum mitophyllum

Reveal

Phytologia 86: 140. 2004.

Common names: Lost Creek wild buckwheat
Treatment appears in FNA Volume 5. Treatment on page 271. Mentioned on page 236, 272.

Herbs, erect, not scapose, (1.5–) 2–3.5 × 0.5–1 (–1.5) dm, glabrous, light gray to green. Stems spreading, without persistent leaf-bases, up to 1/5 height of plant; caudex stems compact; aerial flowering-stems erect, slender, solid, not fistulose, 1–2 dm, glabrous. Leaves basal, 1 per node; petiole 0.05–0.1 cm, glabrous; blade linear, 1.5–6 × 0.05–0.1 cm, sparsely floccose and green abaxially, glabrous and green adaxially, margins revolute. Inflorescences narrowly cymose, 0.5–1.5 × 0.2–0.8 dm; branches dichotomous, glabrous; bracts 3, scalelike, elongate-triangular, 1–4.5 mm. Peduncles absent. Involucres 1 per node, turbinate, 2.5–4.5 × 1.5–2.5 (–3) mm, glabrous; teeth 5, erect, 0.5–0.8 mm. Flowers (2–) 2.5–4 mm; perianth pale or greenish yellow, rarely white, glabrous; tepals connate proximal 1/3–1/2, monomorphic, oblong; stamens exserted, 2.5–4 mm; filaments glabrous or minutely pubescent. Achenes light-brown, 2.5–3.5 (–4) mm, glabrous.


Phenology: Flowering Jul–Sep.
Habitat: Clay flats and slopes, saltbush communities, juniper woodlands
Elevation: 1700-1800 m

Discussion

Eriogonum mitophyllum is known only from the Arapien Shale badlands above Lost Creek northeast of Sigurd, Sevier County. It is allied to E. ostlundii, but differs in its linear leaf blades, narrow, strict inflorescences with di- and trichotomous, U-shaped branches, and longer, pale yellow flowers. The leaf blades are threadlike and the narrowest of any species in the genus.

Selected References

None.

Lower Taxa

None.

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... more about "Eriogonum mitophyllum"
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
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 +
Reveal +
deciduous +  and persistent +
stipelike +
Undefined subg. Eucycla +
papillate +
awn-tipped +  and simple +
1.5 cm15 mm <br />0.015 m <br /> (6 cm60 mm <br />0.06 m <br />) +
glabrous +  and floccose +
linear;orbiculate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
not awn-tipped +
leaflike +  and semileaflike +
glandular +, pubescent +  and glabrous +
elongate-triangular +  and scale-like +
0.1 cm1 mm <br />0.001 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
not brittle +
spreading +  and erect +
scabrellous +
ridged +, angled +  and round +
spreading +  and erect +
whorled +, opposite +  and alternate +
Lost Creek wild buckwheat +
1700-1800 m +
pubescent +  and glabrous +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
unisexual +, , +  and bisexual +
not attenuate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 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 +
Clay flats and slopes, saltbush communities, juniper woodlands +
reduced +
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 />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
nonmembranous +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
in whorls +, opposite +, alternate +  and rosulate +
persistent +
bractlike +
pubescent +  and glabrous +
lobed +, undulate +, crisped +, crenulate +  and entire +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
white;greenish yellow;pale +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Flowering Jul–Sep. +
homostylous +  and 3-carpellate +
, +  and solid +
slender;stout +
persistent +
0.25 cm2.5 mm <br />0.0025 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 +
chambered +  and solid +
slender +  and stout +
Eriogonum mitophyllum +
Eriogonum subg. Eucycla +
species +
emarginate +  and entire +
0 +  and 1/2 +
1/3 +  and 1/2 +
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 +
light gray +  and green +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +