Bacopa rotundifolia (Michx.) Wettst.

Disk waterhyssop (en)

Species

Angiosperms > Lamiales > Plantaginaceae > Bacopa

Characteristics

Stems typically submersed with the tips floating, less often emersed, 2–6 dm, the younger parts usually hairy but soon glabrate; lvs very thin, obovate to subrotund, 1–3.5 cm, entire, palmately 5–13-veined; fls usually 2–4 from the uppermost nodes, on pedicels (0.5)1–1.5 cm, without bractlets; sep 3–5 mm, obtuse, the upper one rotund-elliptic, obscurely to evidently reticulate-veiny; cor white with a yellow throat, narrowly campanulate, mostly 4–10 mm, its lobes equaling or a little shorter than the tube, the 2 upper united half-length; stigmas 2, distinct; 2n=36. Shallow water and wet soil; Ind. to Io., N.D., and Mont., s. to Miss. and Tex., and occasionally intr. elsewhere, as in tidal Va. and Md. June–Sept. (B. simulans; Bramia r.; Macuillamia r.)
Life form perennial
Growth form herb
Growth support aquatic
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.05 - 0.1
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 7-8
Soil humidity 8-8
Soil texture -
Soil acidity 4-7
Soil nutriment -
Hardiness (USDA) 5-11

Usage

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

Cultivation

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

Images

Bacopa rotundifolia unspecified picture

Distribution

Bacopa rotundifolia world distribution map, present in Argentina, Bolivia (Plurinational State of), Brazil, Canada, Spain, Greece, Mexico, Paraguay, and United States of America

Conservation status

Bacopa rotundifolia threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:28362-2
WFO ID wfo-0000558323
COL ID 67YHM
BDTFX ID 127049
INPN ID 637760
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Macuillamia obovata Bacopa nobsiana Bacopa obovata Bacopa rotundifolia Bacopa simulans Moniera rotundifolia Moniera tweedyi Ranapalus rotundifolius Herpestis rotundifolia Bacopa tweediei Bramia rotundifolia Hydranthelium obovatum Hydranthelium rotundifolium Herpestis tweedii Macuillamia rotundifolia Herpestis rotundifolia