Cyperus odoratus Linnaeus, Rusty flatsedge
Cyperus odoratus is rare in Renfrew County. All records and my personal observations are best ascribed morphologically to Cyperus engelmannii but is lumped under Cyperus odoratus in Flora of North America (http://floranorthamerica.org/). These specimens are found on sandbars and exposed riverbeds. Populations can be quite dense but very localized.
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Figure 1. Spikelets and achenes.
Figure 2. Inforescence.
Figure 3. Habit.
Figure 4. Habit.
Figure 5. Habit.
Figure 6. Habit.
Figure 7. Occurence map for Renfrew County and surrounding area.
| Accession # | Collector | Date |
|---|---|---|
| DAO 598090 | J. Atkinson & R. Huizer | 1991-August-15 |
| DAO 593408 | D.F. Brunton | 1987-August-26 |
| CAN 570144, DAO 623619 | M.I. Moore & J.S. Johnston | 1971-September-06 |