Eriogonum ovalifolium var. purpureum

(Nuttall) Durand

Trans. Amer. Philos. Soc., n. s. 11: 175. 1860.

Common names: Purple cushion wild buckwheat
Endemic
Basionym: Eucycla purpurea Nuttall Proc. Acad. Nat. Sci. Philadelphia 4: 17. 1848
Synonyms: Eriogonum davisianum S. Stokes Eriogonum orthocaulon Small Eriogonum ovalifolium var. celsum A. Nelson Eriogonum ovalifolium var. orthocaulon (Small) C. L. Hitchcock Eriogonum ovalifolium subsp. purpureum (Nuttall) A. Nelson ex S. Stokes
Treatment appears in FNA Volume 5. Treatment on page 320. Mentioned on page 321, 322, 323.

Plants 2.5–4 dm wide. Leaf-blades spatulate, oblong, or obovate to oval, 0.5–2 cm, tomentose to floccose, margins not brownish. Scapes erect, (4–) 5–20 cm, tomentose. Inflorescences capitate, 1.5–3.5 cm wide; branches absent. Involucres 3–15 per cluster, 4–5 mm. Flowers 4–5 mm; perianth white to rose or purple. 2n = 40.


Phenology: Flowering Apr–Aug.
Habitat: Sandy to gravelly flats, washes, slopes, and ridges, mixed grassland, saltbush, and sagebrush communities, pinyon and/or juniper and montane conifer woodlands
Elevation: 700-3100 m

Distribution

V5 645-distribution-map.gif

Alta., B.C., Ariz., Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., Utah, Wash., Wyo.

Discussion

Variety purpureum is the most widespread and common expression of the species, being found in southern British Columbia and southwestern Alberta, and in northern Arizona, eastern California, western Colorado, Idaho, western Montana, Nevada, northwestern New Mexico, eastern Oregon, Utah, southeastern Washington, and Wyoming. It approaches var. depressum both geographically and morphologically in the Yellowstone National Park area, and a clear distinction is not always possible. The name var. ovalifolium was long misapplied to what is here termed var. purpureum.

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 +
(Nuttall) Durand +
deciduous +  and persistent +
stipelike +
Eucycla purpurea +
papillate +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
tomentose +  and floccose +
obovate;oval +
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 +
Purple cushion wild buckwheat +
Alta. +, B.C. +, Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, N.Mex. +, Oreg. +, Utah +, Wash. +  and Wyo. +
700-3100 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 flats, washes, slopes, and ridges, mixed grassland, saltbush, and sagebrush communities, pinyon and/or juniper and montane 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 +
1.5 cm15 mm <br />0.015 m <br /> (3.5 cm35 mm <br />0.035 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 +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
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 +
not brownish +
pubescent +  and glabrous +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
white;rose or purple +
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 Apr–Aug. +
homostylous +  and 3-carpellate +
Trans. Amer. Philos. Soc., n. s. +
, +  and solid +
slender;stout +
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 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 davisianum +, Eriogonum orthocaulon +, Eriogonum ovalifolium var. celsum +, Eriogonum ovalifolium var. orthocaulon +  and Eriogonum ovalifolium subsp. purpureum +
chambered +  and solid +
slender +  and stout +
Eriogonum ovalifolium var. purpureum +
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 />) +