Eriogonum microthecum var. phoeniceum

(L. M. Schulz) Reveal

Harvard Pap. Bot. 9: 183. 2004.

Common names: Scarlet wild buckwheat
Endemic
Basionym: Eriogonum phoeniceum L. M. Shultz Harvard Pap. Bot. 3: 49, fig. 1. 1998
Treatment appears in FNA Volume 5. Treatment on page 246. Mentioned on page 244, 245, 247.

Subshrubs, 0.2–0.4 × 0.6–1.2 dm. Stems: caudex absent or sometimes spreading; aerial flowering-stems 0.05–0.1 dm, reddish-tomentose to floccose. Leaves: blade linear, 0.4–0.6 × 0.08–0.12 cm, densely white-tomentose abaxially, sparsely floccose and green adaxially, margins revolute. Inflorescences 0.5–1 cm; branches reddish-floccose to glabrate. Involucres 2–3 mm, floccose to subglabrous. Flowers 2–2.5 mm; perianth white to pink, rose, or red. Achenes 1.5–2 mm.


Phenology: Flowering Jul–Sep.
Habitat: Tuffaceous ash outcrops, sagebrush communities, pinyon-juniper woodlands
Elevation: 1600-2100 m

Discussion

Variety phoeniceum is known only from widely scattered populations in Juab and Millard counties of western Utah. It closely approaches var. lapidicola, and a distinction between the two is somewhat arbitrary, the leaf blades of var. phoeniceum being tightly revolute and a brighter green on the adaxial surface. Specimens of var. phoeniceum also approach specimens of the variable var. simpsonii found mainly in Emery County in eastern Utah.

Selected References

None.

Lower Taxa

None.

"/2" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property.

included +  and exserted +
3-gonous +
usually red +  and cream or yellow +
oblong +  and ellipsoid or oval +
acute;obtuse or rounded +
James L. Reveal +
(L. M. Schulz) Reveal +
deciduous +  and persistent +
stipelike +
Eriogonum phoeniceum +
papillate +
awn-tipped +  and simple +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
floccose +  and white-tomentose +
linear;obovate +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
not awn-tipped +
leaflike +  and semileaflike +
glandular +, pubescent +  and glabrous +
linear +  and triangular +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
gray +, green +, reddish-tomentose to floccose or glabrate +  and brownish +
not brittle +
spreading +  and erect +
reddish-floccose +  and glabrate +
scabrellous +
ridged +, angled +  and round +
whorled +, opposite +  and alternate +
Scarlet wild buckwheat +
1600-2100 m +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
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 +
Tuffaceous ash outcrops, sagebrush communities, pinyon-juniper woodlands +
reduced +
capitate +  and subcapitate +
6 cm60 mm <br />0.06 m <br /> (12 cm120 mm <br />0.12 m <br />) +
10 cm100 mm <br />0.1 m <br /> (13 cm130 mm <br />0.13 m <br />) +
dense +  and diffuse +
0.5 cm5 mm <br />0.005 m <br /> (6 cm60 mm <br />0.06 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1 cm10 mm <br />0.01 m <br /> (10 cm100 mm <br />0.1 m <br />) +
connate +  and free +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
floccose +  and subglabrous +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
nonmembranous +
0.13 cm1.3 mm <br />0.0013 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 +
tomentose;floccose +
erect to deflexed +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
white;pink rose or red +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
tomentose +  and floccose or glabrous +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Flowering Jul–Sep. +
homostylous +  and 3-carpellate +
Harvard Pap. Bot. +
, +  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 +
spreading +  and erect +
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 microthecum var. phoeniceum +
Eriogonum microthecum +
variety +
emarginate +  and entire +
0 +  and 1/2 +
1/5 +  and 2/5 +
oblong +  and obovate +
coriaceous +
0.1 cm1 mm <br />0.001 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
glabrous +, floccose +  and tannish-tomentose +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +