Eriogonum rosense var. rosense

Common names: Mt. Rose wild buckwheat
Endemic
Synonyms: Eriogonum ochrocephalum var. agnellum Eriogonum ochrocephalum subsp. agnellum (Jepson) S. Stokes
Treatment appears in FNA Volume 5. Treatment on page 279. Mentioned on page 280.
Revision as of 09:34, 30 July 2020 by imported>Volume Importer
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Plants 0.2–1 × 0.5–1.5 (–2) dm. Leaf-blades oblanceolate to elliptic, 0.4–1.5 (–1.7) × (0.15–) 0.25–0.6 (–1) cm, densely white-tomentose and glandular on both surfaces. Involucres turbinate to turbinate-campanulate, (2.5–) 3–4 (–4.5) × 2.5–3.5 mm; teeth (5–) 6–8. Flowers 2–3 mm; perianth bright-yellow to reddish yellow; tepals obovate. Achenes 1.5–2.5 mm. 2n = 40.


Phenology: Flowering Jul–Sep.
Habitat: Granitic or volcanic slopes and ridges, sagebrush communities, montane to alpine conifer woodlands
Elevation: (2300-)2500-4000 m

Discussion

Variety rosense is common in the Sierra Nevada (Alpine, Amador, El Dorado, Fresno, Inyo, Madera, Mono, Nevada, Placer, Shasta, Sierra, and Tuolumne counties) and higher desert ranges to the east in Carson City, Douglas, Esmeralda, Storey, and Washoe counties, Nevada. It is an excellent rock-garden plant.

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

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 +
A. Nelson & P. B. Kennedy +
deciduous +  and persistent +
stipelike +
Undefined subg. Eucycla +
papillate +
awn-tipped +  and simple +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
white-tomentose +
broadly elliptic;oval +
0.25 cm2.5 mm <br />0.0025 m <br /> (1.6 cm16 mm <br />0.016 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 /> (0.35 cm3.5 mm <br />0.0035 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 +
Mt. Rose wild buckwheat +
Calif. +  and Nev. +
(2300-)2500-4000 m +
pilose +  and glabrous +
unisexual +, , +  and bisexual +
not attenuate +
0.2 cm2 mm <br />0.002 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 +
Granitic or volcanic slopes and ridges, sagebrush communities, montane to alpine conifer woodlands +
reduced +
open +, virgate +, umbellate +, cymose-umbellate +  and cymose +
dense +  and diffuse +
cymelike +, paniclelike +, racemelike +  and spikelike +
0.6 cm6 mm <br />0.006 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
connate +  and free +
0.4 cm4 mm <br />0.004 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
turbinate +  and turbinate-campanulate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
white-tomentose +
oblanceolate +  and elliptic +
0.25cm;0.6cm +
in whorls +, opposite +, alternate +  and rosulate +
persistent +
bractlike +
greenish-tomentose +  and white-tomentose +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
bright-yellow;reddish yellow +
glandular +  and glabrous +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
0.4 cm4 mm <br />0.004 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering Jul–Sep. +
homostylous +  and 3-carpellate +
Proc. Biol. Soc. Wash. +
, +  and solid +
slender;stout +
persistent +
0.3 cm3 mm <br />0.003 m <br /> (0.55 cm5.5 mm <br />0.0055 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 +
Eriogonum ochrocephalum var. agnellum +  and Eriogonum ochrocephalum subsp. agnellum +
chambered +  and solid +
slender +  and stout +
Eriogonum rosense var. rosense +
Eriogonum rosense +
variety +
emarginate +  and entire +
0 +  and 1/2 +
obovate +
coriaceous +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +