Wolffia brasiliensis Wedd.

Brazilian water meal (en)

Species

Angiosperms > Alismatales > Araceae > Wolffia

Characteristics

Thallus broadly ovoid, slightly asymmetrical, mostly 0.5–1.5 × 0.3– 1.0 mm, 1–1.5 times as long as wide, rounded at the tip, the upper side floating just above the water, punctate (post mortem) with brown pigment-cells, elevated near the middle into a conical papilla; 2n=20, 40, 50, 60, 80. Quiet water; N.J. and Md. to O., Ind., Mich., and Kans., s. to Fla., Tex., and S. Amer. (W. papulifera; W. punctata)
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Fronds boat-shaped, 0.5--1.6 mm, 1--1.5 times as long as wide, 0.3--0.7 times as deep as wide, rounded at apex, papilla usually prominent in center of upper surface (tent-shaped); upper surface intensely green, with 50--100 stomates; pigment cells present in vegetative tissue (visible in dead fronds as brown dots). 2n = 20, 40, 42, 50, 60, 80.
Life form perennial
Growth form herb
Growth support aquatic
Foliage retention evergreen
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Hardiness (USDA) 5-12

Usage

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Cultivation

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Images

Wolffia brasiliensis unspecified picture

Distribution

Wolffia brasiliensis world distribution map, present in Åland Islands, Bolivia (Plurinational State of), Brazil, Canada, Cuba, Dominica, Ecuador, Micronesia (Federated States of), Georgia, Guatemala, Haiti, Jamaica, Malaysia, Nicaragua, Panama, Puerto Rico, Paraguay, Suriname, Uruguay, United States of America, and Venezuela (Bolivarian Republic of)

Conservation status

Wolffia brasiliensis threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:287070-2
WFO ID wfo-0000334452
COL ID 5C2XG
BDTFX ID -
INPN ID 630903
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Wolffia brasiliensis Grantia brasiliensis Wolffia papulifera Wolffia punctata