 The pollen has some unevenly distributed hollow spines, which are conical with a somewhat swollen base and a pointed tip, 1—2 μm high.The functionally female florets are each stiffly enclosed by a large, cone-shaped green and white bract, and clustered with other one-flowered female flower heads, mostly surrounding groups of male florets.The inconspicuous corolla consists of whitish threads and surrounds the base of a whitish style with long arms which have rounded tips.