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Descriptions of California weedy rice biotypes based on hull color, presence of awns, and grain type
| Biotype | Hull color | Awns | Grain type |
|---|---|---|---|
| Type 1 | Strawhull | Absent | Short grain |
| Type 2 | Bronzehull | Absent | Medium grain |
| Type 3 | Strawhull | Long | Medium grain |
| Type 4 | Blackhull | Long | Short grain |
| Type 5 | Strawhull | Partially awned or absent | Medium or long grain |
