Araceae: Arum Family
Lesser Duckweed – Lemna minor
Blooms:
n/a
Plant Height:
Floating on water surface
Origin:
Native
Habitat:
Ponds and streams
Notes:
Very common form of pondweed, this is pale to dark green. The plant body is not differentiated into stems and leaves. In this form the elliptic-obovate plant body appears in 2s or 3s and is 2–5 mm long. Least Duckweed (Lemna minuta), not pictured, is similar but its plant body comes in 2s and is 1–2.5 mm long.
Calla-lily – Zantedeschia aethiopica
Blooms:
Mar–May
Plant Height:
< 1 m
Flower Size:
Large
Origin:
South Africa
Invasive?
Yes – limited
Habitat:
Moist places
Notes:
This is a dramatic flower with a broad, curved white spathe, surrounding the short yellow spike (which is the actual flower). Widely cultivated, occasionally escaping and naturalizing. In summer heat, the leaves wither and a cluster of green fruits ripens to bright red. Photo #4 by Cliff Halverson.
