Plant: Annual forb to 2 m tall grows in wet soils. Stems with prominent sheaths at nodes, swollen at nodes. Leaves: lanceolate, veins arching upward.. Inflorescences at the ends of branches, nodding or drooping, 1-6cm long. Flowers: white. Fruit obovate, usually flattened w/one side convave; black and shiny.

Santa Catalina Mountains.
Sabino Canyon Recreation Area
Location: Stream bed above first bridge across tram road.
11/8/16

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