B and T World Seeds' reference number: 436615
USDA average, annual, minimum temperature Zone:7
Type of plant - perennial
Flower: in centre of frond
Foliage: to 1.5mm.~spher.floating fronds

Synonyms (alternative names) for Wolffia arrhiza: Lemna arrhiza, 

Wolffia arrhiza is included in the following B and T World Seeds flowering plant categories:
56:   Aquatic and Semi aquatic Plant Seeds
74:   West Asian Native and Introduced Plants
77:   Central European Native and Introduced Plants
78:   South Eastern European Native and Introduced Plants
79:   North African Native and Introduced Plants
187:  Araceae
460:  Lemnaceae