Eriogonum umbellatum Torr.

Sulphur-flower buckwheat (en)

Species

Angiosperms > Caryophyllales > Polygonaceae > Eriogonum

Characteristics

Herbs, subshrubs, or shrubs, cespitose, matted or spreading, sometimes erect, often polygamo-dioecious, (0.2-)1-12(-20) × (0.5-)1-12(-20) dm, glabrous or tomentose. Stems: caudex spread-ing; aerial flowering stems spread-ing to erect or nearly so, slender, solid, not fistulose, arising at nodes of caudex branches and at distal nodes of short, nonflowering aerial branches, (0.1-)0.5-3(-4) dm, without a whorl of bracts at midlength. Leaves in loose to compact basal rosettes; petiole 0.1-3(-4) cm, mostly tomentose to floccose or glabrous; blade oblong-ovate or oblanceolate to elliptic to oval, 0.3-3(-4) × 0.1-2.5 cm, densely lanate to tomentose or floccose abaxially, tomentose to floccose or glabrous adaxially, occasionally glabrous on both surfaces, margins entire, plane or rarely wavy. Inflorescences umbellate or compound-umbellate, rarely subcapitate or capitate, 3-25 × 2-18 cm; branches tomentose to floccose or glabrous, rarely with whorl of bracts ca. midlength; bracts 3-several, semileaflike at proximal node, 0.3-2.5 × 0.2-1.8 cm, usually scalelike distally, 1-5 × 0.5-3 mm. Involucres 1 per node, turbinate to campanulate, 1-6 × (1-)1.5-10 mm, tomentose to thinly floccose or glabrous; teeth 6-12, lobelike, reflexed, 1-4(-6) mm. Flowers 2-10(-12) mm, including (0.7-)1.3-2 mm stipelike base; perianth various shades of white, yellow, or red, glabrous; tepals monomorphic, usually spatulate to obovate; stamens exserted, 2-8 mm; filaments pilose proximally. Achenes light brown to brown, 2-7 mm, glabrous except for sparsely pubescent beak.
More
A small plant that keeps growing from year to year. It grows 10 to 30 cm high. The leaves near the base are usually spoon shaped. They have white hairs underneath. The leaves on the stem are in a ring near the top of the stem. The stem divides into 6 or more smaller stalks near the top. The flowers are in umbrella like clusters at the top. The are pale green or yellow
Life form perennial
Growth form
Growth support -
Foliage retention
Sexuality polygamodioecy
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.3
Root system -
Rooting depth (meter) 0.5
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

It grows on exposed sites up to alpine regions in Canada.
Light 7-8
Soil humidity 2-3
Soil texture 5-6
Soil acidity 5-9
Soil nutriment -
Hardiness (USDA) 5-9

Usage

Uses medicinal
Edible leaves
Therapeutic use Dermatological Aid (flower), Venereal Aid (flower), Antirheumatic (External) (leaf), Orthopedic Aid (leaf), Cold Remedy (root), Analgesic (root), Antirheumatic (External) (root), Gastrointestinal Aid (root), Orthopedic Aid (root), Gastrointestinal Aid (unspecified), Disinfectant (unspecified), Emetic (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by divisions or seedlings.
Mode divisions seedlings
Germination duration (days) 14 - 28
Germination temperacture (C°) 20
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -18
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Leaf

Eriogonum umbellatum leaf picture by Mykala Spangler (cc-by-sa)
Eriogonum umbellatum leaf picture by Jack Pommer (cc-by-sa)

Flower

Eriogonum umbellatum flower picture by Kim Schwichtenberg (cc-by-sa)
Eriogonum umbellatum flower picture by Euphrosyne Beauchamp (cc-by-sa)
Eriogonum umbellatum flower picture by Mykala Spangler (cc-by-sa)

Distribution

Eriogonum umbellatum world distribution map, present in Canada and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:30010704-2
WFO ID wfo-0000675570
COL ID 3B4XS
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Eriogonum latum Eriogonum polyanthum Eriogonum tolmieanum Eriogonum cupreum Eriogonum umbellatum var. californicum Eriogonum umbellatum var. crandallii Eriogonum umbellatum var. monocephalum Eriogonum umbellatum subsp. polyanthum Eriogonum umbellatum subsp. subaridum Eriogonum umbellatum var. tolmieanum Eriogonum umbellatum var. umbellatum Eriogonum umbellatum subsp. umbellatum Eriogonum umbellatum

Lower taxons

Eriogonum umbellatum var. torreyanum Eriogonum umbellatum var. aureum Eriogonum umbellatum var. bahiiforme Eriogonum umbellatum var. cladophorum Eriogonum umbellatum var. cognatum Eriogonum umbellatum var. covillei Eriogonum umbellatum var. dichrocephalum Eriogonum umbellatum var. dumosum Eriogonum umbellatum var. ellipticum Eriogonum umbellatum var. glaberrimum Eriogonum umbellatum var. haussknechtii Eriogonum umbellatum var. hypoleium Eriogonum umbellatum var. majus Eriogonum umbellatum var. minus Eriogonum umbellatum var. modocense Eriogonum umbellatum var. munzii Eriogonum umbellatum var. nevadense Eriogonum umbellatum var. porteri Eriogonum umbellatum var. smallianum Eriogonum umbellatum var. speciosum Eriogonum umbellatum var. subaridum Eriogonum umbellatum var. versicolor