Ammannia robusta Heer

Grand redstem (en), Ammannie robuste (fr)

Species

Angiosperms > Myrtales > Lythraceae > Ammannia

Characteristics

Stems 2–10 dm, freely branched when well developed, the branching tending to begin at the base, with the lowest pair of branches initially decumbent and often nearly as long as the main stem; lvs rather thick and fleshy, linear or narrowly oblong, to 10 × 1.5 cm, usually much smaller, ± clasping at the truncate or auriculate, often dilated base; fls 1–3 per axil, virtually sessile, the stout peduncle and pedicels to ca 1 mm, or wanting; fls a little larger than in no. 1, the hypanthium mostly 2.5–4.5 mm at anthesis, the caducous pet 2–3+ mm, pale lavender in life; anthers 4 or 8, light yellow; hypanthium about equaling and largely enclosing the fr, but open at the top, ovary and fruit 4-locular; the persistent style 1.5–3 mm, exserted; fr globose, 3.5–5+ mm thick; 2n=34. Edges of ponds, grassy swales, and similar wet places; N.J.; O. to N.D. and Wash., s. to C. Amer. July–Sept. Often confused with no. 2 [Ammannia coccinea Rottb.] in the past.
Life form annual
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.1 - 1.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
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Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity 7-9
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 5-12

Usage

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

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
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Germination treatment -
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Optimum temperature (C°) -
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Productivity -

Images

Ammannia robusta unspecified picture

Distribution

Ammannia robusta world distribution map, present in Argentina, Belize, Brazil, Canada, Spain, Guatemala, Guam, Italy, Mexico, Martinique, and United States of America

Conservation status

Ammannia robusta threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:552767-1
WFO ID wfo-0000531069
COL ID CT65
BDTFX ID 76342
INPN ID 160299
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Ammannia robusta Ammannia alcalina Ammannia coccinea subsp. robusta Ammannia sanguinolenta subsp. robusta