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1 Inflorescence appearing lateral; inflorescence bract erect, appearing to be a continuation of the culm | |
1 Inflorescence appearing terminal; inflorescence bract not appearing to be a continuation of the culm. | |
2 Leaf blades septate (sometimes obscure in dried specimens; if so, rest leaf on hard surface and run fingernail over it lengthwise). | |
4 Flowers solitary (rarely up to 3) along branches of inflorescence; flowers often aborted; inflorescence diffuse, with slender flexuous branches; [subgenus Juncus, section Ozophyllum] | |
4 Flowers in heads (glomerules) of 3 or more; flowers seldom aborted; inflorescence various. | |
5 Heads turbinate to hemispherical, 3-15 flowered; [subgenus Juncus, section Ozophyllum] |