Eriogonum androsaceum

Bentham in A. P. de Candolle and A. L. P. P. de Candolle

in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 14: 9. 1856.

Common names: Rock-jasmine wild buckwheat
Endemic
Synonyms: Eriogonum flavum subsp. androsaceum (Bentham) S. Stokes
Treatment appears in FNA Volume 5. Treatment on page 372. Mentioned on page 333, 373.

Herbs, matted, 0.5–3 dm wide, tomentose to floccose. Stems: caudex spreading; aerial flowering-stems ascending to erect, slender, solid, not fistulose, arising at nodes of caudex branches and at distal nodes of short, nonflowering aerial branches, (0.1–) 0.3–0.7 (–1) dm, tomentose to floccose or subglabrous. Leaves basal, occasionally in rosettes; petiole 0.3–1.5 cm, tomentose; blade narrowly elliptic, (0.5–) 1–2 × 0.2–0.5 cm, densely white-lanate or grayish-tomentose abaxially, floccose and green adaxially, margins entire, usually slightly revolute. Inflorescences subcapitate or umbellate, 0.5–1.5 × 0.3–2 cm; branches tomentose to floccose; bracts 5–7, semileaflike at proximal node, 0.4–1 × 0.1–0.3 cm, often absent immediately below involucre. Involucres 1 per node, narrowly turbinate to turbinate-campanulate, 3–5 × 3–4.5 mm, tomentose to floccose; teeth 5–8, erect, 0.2–0.5 mm. Flowers (3.5–) 4–5 (–6.5) mm, including 0.1–0.2 mm stipelike base; perianth pale-yellow, sparsely pubescent abaxially; tepals monomorphic, narrowly oblong; stamens exserted, 4–5 mm; filaments pilose proximally. Achenes light-brown, (3–) 4–6 mm, glabrous.


Phenology: Flowering Jul–Aug.
Habitat: Sandy to gravelly or rocky to talus slopes, ridges, and outcrops, mixed grassland, sagebrush, or alpine meadow communities, montane conifer woodlands
Elevation: 1700-2700 m

Discussion

Eriogonum androsaceum is common in the high northern Rocky Mountains in southern Alberta and northwestern Montana (Glacier, Lincoln, Park, Pondera, and Teton counties). It is clearly related to E. flavum but is sufficiently distinct to merit recognition as a species. It is seen occasionally in cultivation but deserves more horticultural attention.

A decoction of the rock-jasmine wild buckwheat was used in sweatbaths for rheumatism, and for internal pain by the Thompson Indians of British Columbia (E. V. Steedman 1930). Interestingly, Steedman indicated also that a strong decoction of the plants was used for syphilis.

Selected References

None.

Lower Taxa

None.

"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.

... more about "Eriogonum androsaceum"
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
light-brown +
included +  and exserted +
3-gonous +
usually red +  and cream or yellow +
oblong +  and ellipsoid or oval +
James L. Reveal +
Bentham in A. P. de Candolle and A. L. P. P. de Candolle +
deciduous +  and persistent +
stipelike +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
awn-tipped +  and simple +
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 /> (2 cm20 mm <br />0.02 m <br />) +
floccose +, grayish-tomentose +  and white-lanate +
linear;orbiculate +
0.2cm;0.5cm +
not awn-tipped +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
glandular +, pubescent +  and glabrous +
scale-like +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
grooved +, disarticulating +  and dichotomous +
not brittle +
tomentose +  and floccose +
scabrellous +
spreading +  and erect +
whorled +, opposite +  and alternate +
Rock-jasmine wild buckwheat +
Alta. +  and Mont. +
1700-2700 m +
curved +  and straight +
0.5 cm5 mm <br />0.005 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
unisexual +  and bisexual +
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 or rocky to talus slopes, ridges, and outcrops, mixed grassland, sagebrush, or alpine meadow communities, montane conifer woodlands +
umbellate +  and subcapitate +
subcapitate +  and capitate +
cymelike +, paniclelike +, racemelike +  and spikelike +
connate +  and free +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
tomentose +  and floccose +
narrowly turbinate +  and turbinate-campanulate +
nonmembranous +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 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 +
erect to deflexed +
cylindric +  and urceolate +
accrescent +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Flowering Jul–Aug. +
homostylous +  and 3-carpellate +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
, +  and solid +
slender;stout +
persistent +
decumbent to erect +  and prostrate +
prostrate +  and erect +
penicillate +, fimbriate +  and capitate +
deciduous +  and persistent +
? (?) +  and ? (?) +
coriaceous +  and membranous +
consisting of a series +  and tubular +
distinct +
erect;spreading or recurved +
Eriogonum flavum subsp. androsaceum +
chambered +  and solid +
Slender (?) +  and Stout (?) +
Eriogonum androsaceum +
Eriogonum subg. Oligogonum +
species +
emarginate +  and entire +
1/4 +  and 1/3 +
coriaceous +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
persistent +
membranous +
pubescent +  and glabrous +
sericeous +, lanate +  and tomentose floccose or glabrous +
dioecious +, polygamodioecious +, synoecious +  and polycarpic +
annual +, biennial +  and perennial +
herb +  and matted +
tomentose +  and floccose +
synoecious +, monocarpic +, polycarpic +  and , +
3 +, 2 +  and 1 +