Zannichellia palustris
horned-pondweed
30–600 cm × 0.2–0.6 mm.
3–6 cm × 0.2–1 mm;
tips acute.
flament 1.5–2 mm;
connective tissue extending beyond anther sacs to form a blunt tip.
style 0.4–0.7 mm.
1.5–3 × 0.5–1 mm;
beak 1–1.5 mm.
=24, 36.
Zannichellia palustris
Brackish or fresh water streams, ponds, lakes, and estuaries. Flowering Mar–Nov. 0–1800m. BR, BW, Col, ECas, Est, Lava, Owy. CA, ID, NV, WA; worldwide. Native.
Currently, only one species of Zannichellia is recognized within North America. Species delimitations within Zannichellia are in debate; more than one species may exist. Further study is needed.
Tamra Prior
- Local floras:
BC, 
CA, 
OR, 
WA - Local Web sites: CalFlora, CalPhotos,
Flora NW, 
PNW Herbaria 
WildflowerSearch
iNaturalist (observations)
USDA Plants Database- LBJ Wildflower Center
- SEINet
- Plants of the World Online
- Encyclopedia of Life
- Wikipedia
- Google Image Search
