Cyperus houghtonii Torrey, Houghton's flatsedge
Cyperus houghtonii is isolated to the dry beaches and sand plains in the upper Ottawa Valley.
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Figure 1. Spikelets, achenes and scales.
Figure 2. Inflorescence.
Figure 3. Habit on beach.
Figure 4. Inflorescence.
Figure 5. Habit on beach with Hudsonia tomentosa (Beach-heath).
Figure 6. Occurence map for Renfrew County and surrounding area.
| Accession # | Collector | Date |
|---|---|---|
| DAO 725388 | P.M. Catling | 1999-July-14 |
| CAN 585367 | D.F. Brunton | 1998-October-05 |
| CAN 585346 | D.F. Brunton | 1998-September-29 |
| DAO 669081 | P.M. Catling & S.E. Carbyn | 1993-September-22 |
| DAO 669102 | P.M. Catling & S.E. Carbyn | 1993-September-22 |
| DAO 668425 | S.E. Carbyn | 1993-July-07 |
| DAO 668471, DAO 668472 | S.E. Carbyn | 1993-June-06 |
| DAO 801565 | G. Vogg | 1989-July-16 |
| CAN 521834 | S.J. Darbyshire & S. Aiken | 1986-July-01 |
| CAN 498251 | A. Vogg | 1984-September-22 |
| DAO 605335 | M.I. Moore | 1970-August-31 |
| CAN 570128 | M.I. Moore | 1970-August-26 |
| DAO 246141 | W.G. Dore & T.C. Brayshaw | 1965-July-22 |
| CAN 570130 | T.C. Brayshaw | 1961-September-15 |
| CAN 570133 | M.I. Moore | 1961-August-31 |
| DAO 172343 | M.I. Moore | 1961-August-31 |
| CAN 570131 | A.W.H. Damman | 1954-September-08 |
| CAN 493578 | M.D. Kirk | 1952-July-15 |
| DAO 13764 | A.J. Breitung | 1948-July-25 |
| DAO 13766 | A.J. Breitung | 1948-July-20 |