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Eriogonum longifolium Nutt.

Longleaf buckwheat (en)

Species

Angiosperms > Caryophyllales > Polygonaceae > Eriogonum

Characteristics

Herbs, 3-20 × 1.5-8 dm, tomentose or nearly glabrous.  Aerial flowering stems erect, 2-17 dm, occasionally finely striated or grooved. Leaves: petiole 5-20 cm; blade lanceolate or oblanceolate to oblong, 0.5-20 × 0.3-2.5(-3) cm, tomentose abaxially, less so to floccose or glabrous adaxially.    Inflorescences 5-50(-80) × 5-50 cm; bracts 3, scalelike, usually triangular, 1-5 mm. Peduncles 0.3-3 cm, thinly tomentose or nearly glabrous. Involucres turbinate to campanulate, 3-7 × 1.5-6 mm; teeth 0.2-0.8 mm. Flowers 5-15 mm, including (0.5-)1-4(-7) mm stipelike base; perianth yellow, densely white-to silvery-tomentose abaxially; tepals monomorphic, lanceolate to narrowly elliptic; stamens 1.7-2.5 mm; filaments glabrous. Achenes brown, 4-6 mm, densely tomentose.
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Coarse, taprooted perennial mostly 1–2 m; stem woolly-villous, freely branched above; lvs ± numerous, alternate, white-tomentose beneath, glabrous above, lanceolate or lance-elliptic, broadly sessile or with an expanded, chartaceous, short-petiolar base, the larger ones mostly 10–15 × 1.5–3 cm; invols numerous, 3–4 mm, closely woolly-villous, shortly lobed; perianth closely woolly-villous outside, tapering to a shortly stipitate base; tep all alike, yellowish inside; filaments glabrous. Ours in cedar-glades; mainly Ozarkian, from Mo. and Kans. to La. and Tex., but irregularly e. to Ky., Tenn., Ala., and Fla. June–Oct. Our plants, as here described, belong to var. harperi (Goodman) Reveal, local in Ky. (Christian Co.), Tenn., and Ala. (E. harperi)
A herb. The leaves are oblong to sword shaped The flowering stems are 70 cm tall.
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 1.0
Root system tap-root
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Rocky or sandy open woods and glades. Sandy soils and calcareous clays in Texas.
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It is a temperate plant.
Light 7-9
Soil humidity 1-5
Soil texture 4-6
Soil acidity 3-8
Soil nutriment -
Hardiness (USDA) 4-10

Usage

The roots are eaten.
Uses medicinal
Edible roots
Therapeutic use Gastrointestinal Aid (root)
Human toxicity -
Animal toxicity -

Cultivation

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

Images

Eriogonum longifolium unspecified picture

Distribution

Eriogonum longifolium world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:694264-1
WFO ID wfo-0000675057
COL ID 3B4RT
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Eriogonum longifolium Eriogonum vespinum Eriogonum coriaceum Eriogonum texanum Eriogonum texanum Eriogonum longifolium var. caput-felis Eriogonum longifolium subsp. diffusum Eriogonum longifolium var. lindheimeri Eriogonum longifolium var. longidens Eriogonum longifolium var. plantagineum Eriogonum longifolium var. longifolium

Lower taxons

Eriogonum longifolium var. gnaphalifolium Eriogonum longifolium var. harperi
WorldFloraDB 2024