Eriogonum panguicense var. alpestre

(S. Stokes) Reveal

Proc. Utah Acad. Sci. 42: 292. 1966.

Common names: Cedar Breaks wild buckwheat
Endemic
Basionym: Eriogonum chrysocephalum subsp. alpestre S. Stokes Eriogonum, 93. 1936
Treatment appears in FNA Volume 5. Treatment on page 274. Mentioned on page 273.

Plants 0.3–0.8 × 1–2 dm. Leaves: petiole 0.1–0.4 cm, base distinct, glabrous abaxially; blade elliptic, 0.5–1.5 × 0.2–0.45 (–0.6) cm, margins often crenulate. Scapes 0.2–0.7 (–1) dm. Flowers (2–) 2.5–3 mm. Achenes 3.5–4 mm.


Phenology: Flowering Jul–Sep.
Habitat: Clayey slopes, high-elevation sagebrush communities, subalpine conifer woodlands
Elevation: 2900-3400 m

Discussion

Variety alpestre is the high-elevation expression of the species and is only marginally distinct. It is restricted essentially to the Cedar Breaks National Monument area of Iron County, where it is scattered but fairly common along the rim of the breaks. It is this component of the species that is now in cultivation.

Selected References

None.

Lower Taxa

None.

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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 +
(S. Stokes) Reveal +
deciduous +  and persistent +
distinct +
stipelike +
Eriogonum chrysocephalum subsp. alpestre +
papillate +
awn-tipped +  and simple +
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
floccose +  and subglabrous +
linear-oblanceolate;elliptic +
0.2 cm2 mm <br />0.002 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
not awn-tipped +
leaflike +  and semileaflike +
glandular +, pubescent +  and glabrous +
triangular +  and scale-like +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
grooved +, branched +  and open +
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 +
Cedar Breaks wild buckwheat +
2900-3400 m +
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 /> (0.3 cm3 mm <br />0.003 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 +
Clayey slopes, high-elevation sagebrush communities, subalpine conifer woodlands +
reduced +
open +, virgate +, umbellate +, cymose-umbellate +  and cymose +
dense +  and diffuse +
cymelike +, paniclelike +, racemelike +  and spikelike +
0.7 cm7 mm <br />0.007 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
connate +  and free +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 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 +
crenulate +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
glabrous +  and tomentose +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Flowering Jul–Sep. +
homostylous +  and 3-carpellate +
Proc. Utah Acad. Sci. +
, +  and solid +
slender;stout +
persistent +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 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 panguicense var. alpestre +
Eriogonum panguicense +
variety +
emarginate +  and entire +
0 +  and 1/2 +
1/4 +  and 1/3 +
obovate +
coriaceous +
0.03 cm0.3 mm <br />3.0e-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 +