134 WILD FLOWERS OF CALIFORNIA 



1823. Leafy pond weed Potamogeton foliosus 



San rrancisco southward. Shasta County into Oregon. 



1824. Slender pondweed Potamogeton pusillus 



San Francisco peninsula, Santa Cruz and in the Sierras. 



1825. Fennel pondweed Potamogeton pectinatus 



Most common species in California. Found up to 7000 feet. 



1826. Pondweed Potamogeton latifolius 



Brackish waters. Gilroy. Found in Lassen County northward into 

 Oregon. 



1827. Ditch Grass Ruppia maritima 



Alkaline or brackish waters. Southern California and northward. 



1828. Holly leafed Xaid Xaias marina 

 Central California, southward. 



1829. Slender leafed Xaid Xaias flexilis 

 Washington, Oregon to southern California. 



1830. Xaias guadalupensis 



Oregon south through the Coast Range to San Francisco. 



1831. Horned pondweed Zannichellia palustris 



Pools and still waters Southern California to Sacramento Valley. 



1832. Eel grass Zostera marina 

 San Pedro northward in shoal waters. 



1833. Torrey's eel grass Phyllospadix torreyi 



Along the shore to low tide limits. San Diego, northward. 



1834. Pacific eel grass Phyllospadix scouleri 

 Santa Barbara and northward. 



ARROW GRASS FAMILY JUNCAGINACEAE 



1835. Common arrow grass Triglochin maritima 

 Marshy shores along the coast. 



1836. Slender arrow grass Triglochin concinna 

 Marshy shores along the coast. 



WATER PLANTAIN FAMILY ALISMACEAE 



1837. Water Plantain Alisma plantago 



Common; margin of ponds. San Francisco and south along peninsula. 

 Sacramento Valley. 



1838. Tule potato Sagittaria lati folia 



Along the Sacramento River, on wet locations; islands, etc. 



1839. Stockton arrow-head Sagittaria Greggii 

 Along the San Joaquin. Scarce. 



1840. Sanford arrow- Sagittaria Sanfordii and vars. 



head 

 Lower San Joaquin, on wet locations. 



RUSH FAMILY JUNCACEAE 



1841. Rush Juncus spp. 



Plants, grass-like, growing in swamps and wet places. Stems hollow or 

 spongy; leaves alternate, smooth. Nine species in coast ranges and interior 

 valleys. Sierras. 



