Lemna minuta (Araceae)
Fronds free floating on water surface, 1-8 coherent in one small group, without green stalk at base (but with a thin white stipe connecting fronds), bright green, without reddish color, obovate, 0.8-4 mm, 1-2 × as long as wide, flat to thickish (but not gibbous on lower surface), with or without indistinct papillae on midline of upper surface, margin entire, base rounded; vein 1, not longer than 2/3 of distance between node and apex. Root 0.2-1.5 cm, sheath not winged, apex rounded to pointed. Turions absent. Ovary with 1 ovule; utricular scale with slit on one side. Fruit not winged. Seed with 12-15 distinct ribs. Fl. (very rare) May-Sep. 2n = 36, 40, 42.
This material was reprinted with permission from the Missouri Botanical Garden Press, St. Louis, and Science Press, Beijing.
This material was reprinted with permission from the Missouri Botanical Garden Press, St. Louis, and Science Press, Beijing.
This material was reprinted with permission from the Missouri Botanical Garden Press, St. Louis, and Science Press, Beijing.
Not formally documented in China but expected from further investigation [native to America; introduced elsewhere]. Species possibly occurring in China.
Lakesides, spring pools, ponds, ditches; in regions with suboceanic moderately temperate to warm-temperate climate; sea level to 3000 m [data from general distribution].