Involucral bracts sessile ; pistils and achenes pubescent .

总苞片无柄；雌蕊和瘦果短柔毛。

Pistils and achenes pubescent or glabrous ; involucral bracts sessile or petiolate .

雌蕊和瘦果被短柔毛或无毛；总苞片无柄或具叶柄。

Pistils and achenes glabrous ; involucral bracts petiolate .

雌蕊和瘦果无毛；总苞片具叶柄。

The involucral bristles appear to be always glabrous .

总苞刚毛看起来总无毛。

Female spikes with 8-11 involucral collars , to 3 cm apart in fruit , each subtending 6-12 flowers .

雌性穗状花序具8-11总苞，对3厘米在果期相隔，每对着6-12花。