Sagittaria demersa J.G.Sm.

Chihuahuan arrowhead (en)

Species

Angiosperms > Alismatales > Alismataceae > Sagittaria

Characteristics

Herbs, annual, to 60 cm; rhizomes absent; stolons present; corms present. Leaves submersed, phyllodial, lenticular, to nearly terete, 12--53 ´ 0.3--0.7 cm; rare stranded plants without expanded leaf blades. Inflorescences racemes, of 2--7 whorls, floating or emersed, to 16 ´ 4 cm; peduncles 13.5--28 cm; bracts connate more than ¼ total length, ovate to lanceolate, 1.5--2 mm, delicate, not papillose; fruiting pedicels spreading to reflexed in flower and fruit, cylindric, 1.5--6.5 cm. Flowers 1.5--5 cm diam.; sepals spreading in staminate, appressed to spreading in flower and fruit in pistillate, often enclosing flower or fruiting head; filaments dilated, longer than anthers, glabrous; pistillate pedicellate, without ring of sterile stamens. Fruiting heads 0.4--0.6 cm diam; achenes oblanceoloid to obovoid, not abaxially keeled, 1.5 ´ 1 mm, beaked; faces not tuberculate, wings absent, glands absent; beak lateral, erect, 1.1 mm.
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality -
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.5 - 0.6
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 7-9
Soil humidity 10-12
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

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 -

Distribution

Sagittaria demersa world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:225236-2
WFO ID wfo-0000736520
COL ID 4TYPG
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Sagittaria triquetra Sagittaria demersa