Eriogonum ovalifolium var. nivale

(Canby ex Coville) M. E. Jones

Contr. W. Bot. 11: 8. 1903.

Common names: Sierran cushion wild buckwheat
Endemic
Basionym: Eriogonum nivale Canby ex Coville Contr. U.S. Natl. Herb. 4: 187. 1893
Synonyms: Eriogonum rhodanthum A. Nelson & P. B. Kennedy
Treatment appears in FNA Volume 5. Treatment on page 323. Mentioned on page 319, 320, 324.

Plants 0.5–3 dm wide. Leaf-blades usually round, 0.2–0.8 cm, densely lanate to white-tomentose, margins infrequently brownish. Scapes mostly erect, 0.3–5 (–13) cm, mostly lanate or tomentose. Inflorescences capitate, 1–2.5 cm wide; branches absent. Involucres 2–4 per cluster, 3–4.5 mm. Flowers 4–5 mm; perianth white to rose or red. 2n = 40.


Phenology: Flowering Jun–Sep.
Habitat: Sandy to gravelly often granitic slopes, ridges, and alpine fell-fields, mixed grassland, mountain meadow, and sagebrush communities, conifer woodlands
Elevation: 1700-4200 m

Distribution

V5 654-distribution-map.gif

B.C., Calif., Nev., Oreg., Utah, Wash.

Discussion

Variety nivale is the common high-elevation expression of the species in desert ranges of the Great Basin and in the Sierra-Cascade cordillera. In northwestern Washington, some plants of var. nivale have scapes to 13 cm (especially in Chellam County). They are well removed from var. purpureum, and have the dense, almost brilliant white tomentum of var. nivale. Plants in the Slide Mountain-Mt. Rose area of west-central Nevada occasionally have the brown leaf margins more commonly seen in the lower-elevation var. eximium. A few populations having off-yellowish flowers are known from the White Mountains of Inyo and Mono counties, California. There as well, the tepals are distinctly marked by a large red midrib. This is similar to the condition found in Eriogonum gilmanii, but in the White Mountains plants the tepals are not globose as in that species nor is the pubescence similar. The variety is ideal for the rock garden and is widely available for cultivation.

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.

light-brown;brown +
included +  and exserted +
3-gonous +
usually red +  and cream or yellow +
oblong +  and ellipsoid or oval +
acute;obtuse or rounded +
James L. Reveal +
(Canby ex Coville) M. E. Jones +
deciduous +  and persistent +
stipelike +
Eriogonum nivale +
papillate +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
densely lanate +  and white-tomentose +
awn-tipped +  and simple +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (6 cm60 mm <br />0.06 m <br />) +
lanate +  and tomentose or floccose +
oblanceolate;elliptic or spatulate +
0.2 cm2 mm <br />0.002 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
not awn-tipped +
leaflike +  and semileaflike +
glandular +, pubescent +  and glabrous +
linear +  and triangular +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.4 cm4 mm <br />0.004 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 +
whorled +, opposite +  and alternate +
Sierran cushion wild buckwheat +
B.C. +, Calif. +, Nev. +, Oreg. +, Utah +  and Wash. +
1700-4200 m +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
unisexual +, , +  and bisexual +
not attenuate +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 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 +
Sandy to gravelly often granitic slopes, ridges, and alpine fell-fields, mixed grassland, mountain meadow, and sagebrush communities, conifer woodlands +
reduced +
umbellate +  and capitate +
5 cm50 mm <br />0.05 m <br /> (7 cm70 mm <br />0.07 m <br />) +
dense +  and diffuse +
0.7 cm7 mm <br />0.007 m <br /> (5 cm50 mm <br />0.05 m <br />) +
cymelike +, paniclelike +, racemelike +  and spikelike +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
connate +  and free +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
tomentose +  and floccose +
turbinate +  and turbinate-campanulate +
nonmembranous +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
in whorls +, opposite +, alternate +  and rosulate +
persistent +
bractlike +
pubescent +  and glabrous +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
white;rose or red +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
0.1 cm1 mm <br />0.001 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Flowering Jun–Sep. +
homostylous +  and 3-carpellate +
Contr. W. Bot. +
, +  and solid +
slender;stout +
5 cm50 mm <br />0.05 m <br /> (13 cm130 mm <br />0.13 m <br />) +
tomentose +  and lanate +
0.3 cm3 mm <br />0.003 m <br /> (5 cm50 mm <br />0.05 m <br />) +
persistent +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
decumbent to erect +  and prostrate +
decumbent +  and spreading +
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 rhodanthum +
chambered +  and solid +
slender +  and stout +
Eriogonum ovalifolium var. nivale +
Eriogonum ovalifolium +
variety +
emarginate +  and entire +
in proximal 1/2 +  and connate +
0 +  and 1/2 +
lobed +  and laciniate +
coriaceous +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
floccose +  and tomentose or lanate +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +