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bent two-whorl buckwheat

salty buckwheat, smooth two-whorl buckwheat

Stems

mostly erect, (0.5–)1–3 dm, sparsely glandular.

mostly spreading, 0.5–2 dm, glabrous.

Leaves

basal;

petiole 1–4 cm;

blade mostly orbiculate, 0.5–2 cm, minutely strigose when young, glabrous at maturity.

basal and cauline;

basal petiolate, petiole 0.5–2 cm, blade spatulate, (1–)2–4 × (0.5–)1–2.5 cm, glabrous;

cauline sessile, blade narrowly lanceolate to oblanceolate, 0.5–4.5 × 0.2–1 cm.

Inflorescences

erect or slightly spreading, 0.5–2.5 dm, glandular at nodes and proximal internode;

bracts 0.5–2 mm, sometimes sparsely glandular.

spreading, 0.5–2.5(–3) dm, glabrous, occasionally glandular at proximal nodes;

bracts 0.5–4 mm.

Peduncles

flexed, filiform, 1–3 cm, glandular to middle.

straight, slender to filiform, 0.1–4 cm, glabrous, or absent.

Flowers

perianth yellow to reddish yellow, 1.5–3.5 mm;

tepals lanceolate;

filaments 1.5–2 mm;

anthers 0.2–0.3 mm.

perianth yellow, 1.5–3 mm;

tepals lanceolate;

filaments 1.5–2 mm;

anthers 0.2–0.3 mm.

Achenes

2–2.5 mm.

2–2.5 mm.

Involucral

bracts 2–3 × 2–4 mm, glabrous, sometimes sparsely glandular.

bracts 2–8 × 2–3 mm, glabrous.

2n

= 40.

= 40.

Stenogonum flexum

Stenogonum salsuginosum

Phenology Flowering Apr–Sep. Flowering Apr–Sep.
Habitat Clay hills and flats, saltbush communities Clay hills and flats, saltbush communities
Elevation 1300-2000 m (4300-6600 ft) 1300-2200 m (4300-7200 ft)
Distribution
from FNA
AZ; CO; NM; UT
[BONAP county map]
from FNA
AZ; CO; NM; UT; WY
[WildflowerSearch map]
[BONAP county map]
Discussion

Stenogonum flexum is found in eastern Utah from Uintah County south to Kane and San Juan counties, with additional populations over the state lines in Arizona, Colorado, and New Mexico.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Stenogonum salsuginosum is common to abundant and even weedy on the Colorado Plateau. The species occurs from Washakie County, Wyoming, southward into eastern Utah and extreme western Colorado to northern Arizona (just entering Mohave County) and northwestern New Mexico.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 5, p. 432. FNA vol. 5, p. 432.
Parent taxa Polygonaceae > subfam. Eriogonoideae > Stenogonum Polygonaceae > subfam. Eriogonoideae > Stenogonum
Sibling taxa
S. salsuginosum
S. flexum
Synonyms Eriogonum flexum Eriogonum salsuginosum
Name authority (M. E. Jones) Reveal & J. T. Howell: Brittonia 28: 249. (1976) Nuttall: Proc. Acad. Nat. Sci. Philadelphia 4: 19. (1848)
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