Flora of North America species comparison

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Eriogonum microthecum var. phoeniceum
Photo is of parent taxon

scarlet wild buckwheat
Habit Subshrubs, 0.2–0.4 × 0.6–1.2 dm.
Stems

caudex absent or sometimes spreading;

aerial flowering stems 0.05–0.1 dm, reddish-tomentose to floccose.
Leaves

blade linear, 0.4–0.6 × 0.08–0.12 cm, densely white-tomentose abaxially, sparsely floccose and green adaxially, margins revolute.
Inflorescences

0.5–1 cm;

branches reddish-floccose to glabrate.
Involucres

2–3 mm, floccose to subglabrous.
Flowers

2–2.5 mm;

perianth white to pink, rose, or red.
Achenes

1.5–2 mm.

Eriogonum microthecum var. phoeniceum
Phenology Flowering Jul–Sep.
Habitat Tuffaceous ash outcrops, sagebrush communities, pinyon-juniper woodlands
Elevation 1600-2100 m (5200-6900 ft)
Distribution
from FNA
UT
[BONAP county map]
Discussion

Variety phoeniceum is known only from widely scattered populations in Juab and Millard counties of western Utah. It closely approaches var. lapidicola, and a distinction between the two is somewhat arbitrary, the leaf blades of var. phoeniceum being tightly revolute and a brighter green on the adaxial surface. Specimens of var. phoeniceum also approach specimens of the variable var. simpsonii found mainly in Emery County in eastern Utah.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 5, p. 246.
Parent taxa Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Eucycla > Eriogonum microthecum
Sibling taxa
E. microthecum var. alpinum, E. microthecum var. ambiguum, E. microthecum var. arceuthinum, E. microthecum var. corymbosoides, E. microthecum var. johnstonii, E. microthecum var. lacus-ursi, E. microthecum var. lapidicola, E. microthecum var. laxiflorum, E. microthecum var. microthecum, E. microthecum var. panamintense, E. microthecum var. schoolcraftii, E. microthecum var. simpsonii
Synonyms E. phoeniceum
Name authority (L. M. Schulz) Reveal: Harvard Pap. Bot. 9: 183. (2004)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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