young shoot icon Home All plants About

Stuckenia filiformis (Pers.) Börner

Threadleaf-pondweed (en), Potamot filiforme (fr), Stuckénie filiforme (fr)

Species

Angiosperms > Alismatales > Potamogetonaceae > Stuckenia

Characteristics

Plants perennial, submerged. Rhizome terete, slender, with apical dormant buds. Stems slender, terete to compressed, ca. 0.5 mm in diam., sparsely to densely branched at base. Stipules partly fused with leaf base and sheathing stem; sheaths 0.6-4 cm, on vegetative branches 0.3-1.8 mm in diam., connate, tubular toward base at least when young, appearing as a closed ellipse when transversely dissected, persistent; leaves sessile, filiform, 3-18 cm × 0.2-1.2(-1.6) mm, 3-veined, lateral veins inconspicuous, with air channels bordering midvein, apex obtuse to bifurcate. Spikes terminal, with 3-6 whorls of opposite flowers, markedly distant even at anthesis; peduncles 4-20 cm, slender. Carpels 4. Fruit obovoid, 1.9-2.6(-3) mm, abaxial keel indistinct, obtuse, beak very short, verruciform. Fl. and fr. Jul-Oct. 2n = 78.
More
Stems freely branching proximally, sparsely branching distally, subterete, (10--)20--60(--100) cm. Leaves: length and width of those on main stem only slightly larger than those on branches; stipules with stipular sheaths often inflated on proximal portion of stem, 1--4(--9.5) cm, summit of midstem stipules tight to stem, ca. ± same width as stem, ligule 2--20 mm, distinct, especially on distal stipules; blade filiform or slenderly linear, 1--15 cm ´ 0.2--2(--3.7) mm, apex notched, blunt, or short-apiculate; veins 1--3. Inflorescences: peduncles terminal, erect, filiform to slender, 2--10(--15) cm; spikes cylindric to moniliform, 5--55 mm; verticels 2--6(--9). Fruits dark brown, obovoid, 2--3 ´ 1.5--2.4 mm; beak inconspicuous.
Life form perennial
Growth form herb
Growth support aquatic
Foliage retention evergreen
Sexuality hermaphrodite
Pollination hydrogamy
Spread hydrochory
Mature width (meter) -
Mature height (meter) -
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Light 7-7
Soil humidity 8-10
Soil texture -
Soil acidity 5-8
Soil nutriment -
Hardiness (USDA) 4-9

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Stuckenia filiformis unspecified picture

Distribution

Stuckenia filiformis world distribution map, present in Afghanistan, Bolivia (Plurinational State of), Brazil, Canada, Chile, China, Colombia, Ecuador, Spain, Finland, France, Micronesia (Federated States of), Haiti, Ireland, Iran (Islamic Republic of), Iceland, Kyrgyzstan, Montenegro, Norway, Nepal, Pakistan, Peru, Palau, Sweden, Turks and Caicos Islands, United States of America, and Uzbekistan

Conservation status

Stuckenia filiformis threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:51015154-1
WFO ID wfo-0000771225
COL ID 537PG
BDTFX ID 119808
INPN ID 717572
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Potamogeton rostratus Stuckenia interior Spirillus filiformis Potamogeton setaceus Coleogeton filiformis Potamogeton austrosibiricus Potamogeton punensis Stuckenia austrosibirica Stuckenia punensis Potamogeton aulacophyllus Potamogeton filiformis Potamogeton strictus Stuckenia filiformis Potamogeton filiformis f. elongatus Potamogeton filiformis f. fluviatilis Potamogeton marinus f. alpinus Potamogeton fasciculatus Potamogeton interior Potamogeton magellanicus Potamogeton applanatus Potamogeton juncifolius Coleogeton filiformis subsp. alpinus Coleogeton filiformis subsp. occidentalis Potamogeton rostratus var. humilis Potamogeton filiformis var. applanatus Stuckenia filiformis subsp. occidentalis Stuckenia filiformis subsp. alpina Potamogeton marinus var. occidentalis Potamogeton marinus var. macounii Potamogeton marinus var. alpinus Potamogeton strictus var. magellanicus Potamogeton filiformis var. occidentalis Potamogeton filiformis var. macounii Stuckenia filiformis var. occidentalis Stuckenia filiformis var. alpina Potamogeton marinus var. setaceus Potamogeton pectinatus var. setaceus Potamogeton pectinatus subsp. filiformis Potamogeton filiformis var. fasciculatus Potamogeton filiformis var. alpinus Potamogeton filiformis var. juncifolius Potamogeton filiformis subsp. juncifolius Potamogeton filiformis var. elongatus Potamogeton juncifolius var. amphibius Potamogeton juncifolius var. fluviatilis Potamogeton filiformis var. kihlmanii Potamogeton filiformis var. austrosibiricus Potamogeton filiformis f. fasciculatus Potamogeton filiformis f. alpinus Potamogeton filiformis f. polaris Potamogeton filiformis var. alpinus Stuckenia filiformis subsp. filiformis Stuckenia filiformis var. austrosibirica
WorldFloraDB 2024