familyPolygonaceae
subfamilyPolygonaceae subfam. Eriogonoideae
genusEriogonum
subgenusEriogonum subg. Oligogonum
speciesEriogonum compositum
Eriogonum compositum var. leianthum
Hooker’s J. Bot. Kew Gard. Misc. 5: 264. 1853.
Common names: Smooth arrow-leaf wild buckwheat
Endemic
Synonyms: Eriogonum compositum var. simplex (S. Watson ex Piper) H. St. John & F. A. Warren
Plants 2–4 (–5) dm. Aerial flowering-stems usually slender, infrequently fistulose, 1–3 dm, usually glabrous, rarely floccose. Leaf-blades ovate to deltoid, 3–10 (–15) × 2–4 (–4.5) cm. Involucres glabrous or more commonly weakly glandular-puberulent. Flowers 5–6 mm; perianth usually bright-yellow.
Phenology: Flowering May–Jul.
Habitat: Sandy to gravelly slopes, mixed grassland and sagebrush communities, oak and montane conifer woodlands
Elevation: 30-1600(-2000) m
Distribution
Idaho, Oreg., Wash.
Discussion
Variety leianthum is mostly occasional to locally common in eastern Washington, northwestern and west-central Idaho, and northeastern Oregon.
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."dm" is not declared as a valid unit of measurement for this property.
... more about "Eriogonum compositum var. leianthum"
not winged +
light-brown +
glabrous +
homocarpic +
3-gonous +
5mm;6mm +
various +
dehiscing +
absent +
marcescent +
longer +
anthesis +
whorled +
distal +
stipelike +
pubescent +
entire +
greenish +
ovate;deltoid +
not awn-tipped +
connate +
absent +
3;several +
connate +
not brittle +
free +
aerial +
absent +
scabrellous +
round +
spreading +
absent +
woody +
woody +
fasciculate +
Smooth arrow-leaf wild buckwheat +
nuclear +
abundant +
adnate +
pilose +
6;100 +
attenuate +
hollow +
aerial +
fistulose +
slender +
homocarpic +
Sandy to gravelly slopes, mixed grassland and sagebrush communities, oak and montane conifer woodlands +
bractlike +
racemose +
not appressed +
spreading +
axillary +
reduced +
trichotomous +
enclosed +
nonmembranous +
persistent +
2cm;4cm +
sheathing +
persistent +
basal +
bractlike +
awn-tipped +
plane +
2;3 +
not swollen +
orthotropous +
basal +
articulate +
absent +
accrescent +
cluster +
reflexed +
absent +
erect to deflexed +
winged +
bright-yellow +
persistent +
glabrous +
pustulose +
accrescent +
various +
absent +
obscure +
tomentose +
Hooker’s J. Bot. Kew Gard. Misc. +
1853 +
fibrous +
persistent +
anthesis +
ringlike +
longitudinal +
Endemic +
recurved +
exserted +
absent +
scapose +
scandent +
absent +
peltate +
capitate +
foliaceous +
absent +
chartaceous +
arranged +
involucral +
absent +
distinct +
erect;spreading or recurved +
spreading;erect +
woody +
Eriogonum compositum var. leianthum +
Eriogonum compositum +
variety +
absent +
monomorphic +
connate +
dimorphic +
coriaceous +
single +
longer +
lobelike +
not awned +
persistent +
membranous +
glandular-punctate +
developing +
raised +
perennial +
homophyllous +
polygamodioecious +
2dm;5dm +