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Pondweeds
Arrow
grasses | Water nymphs | Pondweeds
| Ditch grasses | Scheuchzerias
| Eel grasses
Arrow
Grasses (family Juncaginaceae)
 Lilaea
scilloides
 Triglochin
gaspensis
Arrow
grass Triglochin maritima
Triglochin
palustris
Water
Nymphs (family Najadaceae)
 Caulophyllum
giganteum
Najas
flexilis
Najas
gracillima
Najas
guadalupensis guadalupensis
candleberry, candlewood, candletree, tallowtree Najas guadalupensis
olivacea
Pondweeds
(family Potamogetonaceae)
Potamogeton
alpinus
Broad-leaved
pondweed Potamogeton amplifolius
Snail-seed
pondweed Potamogeton bicupulatus
Alga
pondweed, Tuckerman’s pondweed Potamogeton confervoides
Curled
pondweed Potamogeton crispus
Ribbon-leaf
pondweed Potamogeton epihydrus
Leafy
pondweed Potamogeton foliosus foliosus
Potamogeton
friesii
Potamogeton
gramineus
Potamogeton
hillii
Illinois
pondweed Potamogeton illinoensis
Floating-leaf
pondweed Potamogeton natans
Long-leaf
pondweed Potamogeton nodosus
Oakes
pondweed Potamogeton oakesianus
Potamogeton
oblongus
Potamogeton
obtusifolius
Ogden's
pondweed Potamogeton ogdenii
Potamogeton
perfoliatus
White-stemmed
pondweed Potamogeton praelongus
Spotted
pondweed Potamogeton pulcher
Potamogeton
pusillus gemmiparus
Potamogeton
pusillus pusillus
Potamogeton
pusillus tenuissimus
Potamogeton
richardsonii
Robbins'
pondweed, fern pondweed Potamogeton robbinsii
Northern
snailseed pondweed Potamogeton spirillus
Potamogeton
strictifolius
Yenissei
River pondweed Potamogeton subsibiricus
Vasey's
pondweed Potamogeton vaseyi
Flatstem
pondweed Potamogeton zosteriformis
Stuckenia
filiformis alpinaus
Stuckenia
filiformis filiformis
Stuckenia
filiformis occidentalis
Sago-pondweed
Stuckenia pectinata
Bigsheath-pondweed
Stuckenia vaginata
Ditch
grasses (family Ruppiaceae)
Ruppia
cirrhosa
Ruppie
maritime Ruppia maritima
Scheuchzerias
(family Scheuchzeriaceae)
Scheuchzeria
palustris
Eel
grasses (family Zosteraceae)
Scouler’s
surf-grass Phyllospadix scouleri
Phyllospadix
serrulatus
Torrey’s
surf-grass Phyllospadix torreyi
Zostera
japonica
Zostera
marina
 
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