Eriogonum scopulorum

Reveal

Phytologia 23: 170. 1972.

Common names: Cliff wild buckwheat
Endemic
Treatment appears in FNA Volume 5. Treatment on page 280. Mentioned on page 230, 281.

Herbs, matted, scapose, 0.4–1 × 0.5–1.5 (–2) dm, glandular-hairy, grayish. Stems matted, with persistent leaf-bases, up to 1/5 height of plant; caudex stems matted; aerial flowering-stems scapelike, erect, slender, solid, not fistulose, (0.3–) 0.5–0.7 dm, glandular-hairy. Leaves basal, fasciculate in terminal tufts; petiole 0.2–0.4 cm, tomentose, glandular; blade oblanceolate to elliptic, (0.5–) 0.6–0.9 (–1) × 0.25–0.6 cm, densely white-tomentose and glandular on both surfaces or greenish adaxially, margins plane. Inflorescences capitate, 0.5–1.5 cm; branches absent; bracts 5–6, scalelike, triangular, 1.3–1.6 mm. Peduncles absent. Involucres 5–7 per cluster, turbinate-campanulate, 2.5–3 × (1.5–) 2.5–3 mm, membranous, glabrous or glandular and sparsely floccose; teeth 5–6, erect, 1–1.5 mm. Flowers 2.5–3 (–3.5) mm; perianth pale-yellow, minutely glandular; tepals connate proximal 1/5, monomorphic, oblanceolate; stamens exserted, 3–4 mm; filaments pilose proximally. Achenes brown, 2–2.5 mm, glabrous.


Phenology: Flowering Jul–Aug.
Habitat: Rocky granitic outcrops, sagebrush communities, montane conifer woodlands
Elevation: 2400-2900 m

Discussion

Eriogonum scopulorum is known only from a few scattered locations in the Wallowa Mountains of Wallowa County, Oregon, and in Adams and Idaho counties, Idaho. While rare, and of concern to the U.S. Forest Service, it is not considered a “sensitive species,” given its remote location and lack of any immediate threat. The cliff wild buckwheat is worthy of cultivation as a rock garden plant.

Selected References

None.

Lower Taxa

None.

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... more about "Eriogonum scopulorum"
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 +
0.9 cm9 mm <br />0.009 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
white-tomentose +
oblanceolate;elliptic +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
not awn-tipped +
leaflike +  and semileaflike +
glandular +, pubescent +  and glabrous +
triangular +  and scale-like +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.16 cm1.6 mm <br />0.0016 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 +
Cliff wild buckwheat +
Idaho +  and Oreg. +
2400-2900 m +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 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 +
Rocky granitic outcrops, sagebrush communities, montane conifer woodlands +
reduced +
open +, virgate +, umbellate +, cymose-umbellate +  and cymose +
dense +  and diffuse +
cymelike +, paniclelike +, racemelike +  and spikelike +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
connate +  and free +
0.15 cm1.5 mm <br />0.0015 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 />) +
floccose +, glandular +  and glabrous +
turbinate-campanulate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
in whorls +, opposite +, alternate +  and rosulate +
persistent +
bractlike +
pubescent +  and glabrous +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
glabrous +, pubescent +  and glandular +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Flowering Jul–Aug. +
homostylous +  and 3-carpellate +
, +  and solid +
slender;stout +
persistent +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
decumbent to erect +  and prostrate +
erect +, 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 +
chambered +  and solid +
slender +  and stout +
Eriogonum scopulorum +
Eriogonum subg. Eucycla +
species +
emarginate +  and entire +
0 +  and 1/2 +
oblanceolate +
coriaceous +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
herb +  and matted +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +