Eriogonum latifolium subsp. pauciflorum (S. Watson) S. Stokes:
United States (North America)

Eriogonum pauciflorum var. pauciflorum :
United States (North America)

Eriogonum pauciflorum var. gnaphalodes (Benth.) Reveal:
United States (North America)

Eriogonum pauciflorum Pursh:
China (Asia)
United States (North America)

Eriogonum nudum var. pauciflorum S. Watson:
Mexico (Mesoamerica)
United States (North America)

Canada

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

Canada

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

Eriogonum pauciflorum is the common, matted wild buckwheat on the Great Plains. The species occurs in southern Manitoba and Saskatchewan, northeastern Colorado, Montana, western Nebraska, North Dakota, Nebraska, South Dakota, and Wyoming. Plants from southeastern Wyoming, northeastern Colorado and western Nebraska have somewhat broader leaf blades (spatulate to elliptic rather than linear-oblanceolate to oblanceolate) that are densely tomentose to lanate on both surfaces (rather than loosely tomentose abaxially and less so or glabrous adaxially). Such plants have been distinguished as var. gnaphalodes. This expression would be worthy of a place in the rock garden. A hybrid between var. pauciflorum and E. effusum has been named E. ×nebraskense Rydberg (see 2. E. effusum). The hybrid is known from Weld County, Colorado, Cheyenne, Dawes, Kimball, and Sioux counties, Nebraska, and Converse and Platte counties, Wyoming.

Herbs, loosely matted, usually scapose, 0.5-2 × 0.5-3 dm, tomentose, grayish. Stems spreading, usually with persistent leaf bases, up to 1/ 4 height of plant; caudex stems matted; aerial flowering stems scapelike, erect or nearly so, slender, solid, not fistulose, 0.3-2 dm, tomentose. Leaves fasciculate in terminal tufts, sometimes 1 per node and sheathing up stem 1-5 cm; petiole 1-5 cm, tomentose to lanate; blade linear-oblanceolate to oblanceolate or narrowly spatulate to elliptic, 1-4 × 0.1-1 cm, grayish- or whitish-tomentose abaxially, less so to subglabrous (or rarely glabrous) adaxially or white-lanate on both surfaces, margins plane. Inflorescences capitate, subcapitate, or cymose-umbellate, 1-5 × 1-2 cm; branches absent or dichotomous; bracts 2-6, linear to lanceolate, scalelike to semileaflike, 1.5-20 × 1-5 mm. Peduncles absent. Involucres 1 per node or 2-5(-7) per cluster, narrowly turbinate, (3.5-)4-5 × (1.5-)2-3 mm, rigid, floccose to tomentose; teeth 5, erect, 0.5-0.8 mm. Flowers 2-2.5 mm; perianth whitish brown to rose, pubescent, rarely glabrous; tepals connate proximal 1/ 3, monomorphic, oblong; stamens exserted, 2.5-3 mm; filaments pilose proximally. Achenes light brown to brown, 2-2.5 mm, glabrous.

Eriogonum depauperatum Small; E. gnaphalodes Bentham; E. multiceps Nees; E. pauciflorum var. gnaphalodes (Bentham) Reveal

Isotype for Eriogonum depauperatum Small
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Verified from the card file of type specimens
Preparation: Pressed specimen
Collector(s): P. A. Rydberg
Year Collected: 1892
Locality: Hermosa, near the Black Hills., Custer, South Dakota, United States, North America

Flowering May-Sep. Clay to gravelly flats, washes, and slopes, grassland and sagebrush communities, juniper woodlands; 600-1800 m; Man., Sask.; Colo., Mont., Nebr., N.Dak., S.Dak., Wyo.

Canada

Rounded National Status Rank: NNR - Unranked

United States

Rounded National Status Rank: NNR - Unranked

Rounded Global Status Rank: T5 - Secure

United States

Rounded National Status Rank: NNR - Unranked

Rounded Global Status Rank: T5 - Secure

Canada

Rounded National Status Rank: NNR - Unranked

United States

Rounded National Status Rank: NNR - Unranked

Rounded Global Status Rank: G5 - Secure

Comments: As treated here (following Kartesz, 1999), excludes Eriogonum x nebraskense, which is sometimes treated as E. pauciflorum var. nebraskense (as in Kartesz, 1994).